|  | Index Entry | Section | 
|---|
| 
 | 
| ! |  |  | 
|---|
|  | ! | 16.3.6 Connectives for test | 
|  | != | 16.3.4 String tests | 
| 
 | 
| % |  |  | 
|---|
|  | % | 16.4.2 Numeric expressions | 
| 
 | 
| & |  |  | 
|---|
|  | & | 16.4.3 Relations for expr | 
| 
 | 
| * |  |  | 
|---|
|  | * | 16.4.2 Numeric expressions | 
| 
 | 
| + |  |  | 
|---|
|  | + | 16.4.1 String expressions | 
|  | + | 16.4.2 Numeric expressions | 
|  | +page_range | 4.2 pr: Paginate or columnate files for printing | 
| 
 | 
| - |  |  | 
|---|
|  | - | 16.4.2 Numeric expressions | 
|  | - | 22.2 env: Run a command in a modified environment | 
|  | - | 22.5 su: Run a command with substitute user and group id | 
|  | - and Unix rm | 11.5 rm: Remove files or directories | 
|  | `-', removing files beginning with | 11.5 rm: Remove files or directories | 
|  | -- | 2. Common options | 
|  | --across | 4.2 pr: Paginate or columnate files for printing | 
|  | --address-radix | 3.4 od: Write files in octal or other formats | 
|  | --adjustment | 22.3 nice: Run a command with modified scheduling priority | 
|  | --all | 9.3 unexpand: Convert spaces to tabs | 
|  | --all | 10.1.1 Which files are listed | 
|  | --all | 14.1 df: Report filesystem disk space usage | 
|  | --all | 14.2 du: Estimate file space usage | 
|  | --all | 19.2 stty: Print or change terminal characteristics | 
|  | --all | 21.2 uname: Print system information | 
|  | --all-repeated | 7.2 uniq: Uniquify files | 
|  | --almost-all | 10.1.1 Which files are listed | 
|  | --append | 17.1 tee: Redirect output to multiple files | 
|  | --archive | 11.1 cp: Copy files and directories | 
|  | --author | 10.1.2 What information is listed | 
|  | --backup | 2.1 Backup options | 
|  | --backup | 11.1 cp: Copy files and directories | 
|  | --backup | 11.3 install: Copy files and set attributes | 
|  | --backup | 11.4 mv: Move (rename) files | 
|  | --backup | 12.2 ln: Make links between files | 
|  | --before | 3.2 tac: Concatenate and write files in reverse | 
|  | --binary | 3.1 cat: Concatenate and write files | 
|  | --binary | 6.4 md5sum: Print or check message-digests | 
|  | --block-size | 2.2 Block size | 
|  | --block-size | 14.1 df: Report filesystem disk space usage | 
|  | --block-size | 14.2 du: Estimate file space usage | 
|  | --block-size=size | 2.2 Block size | 
|  | --body-numbering | 3.3 nl: Number lines and write files | 
|  | --bourne-shell | 10.4 dircolors: Color setup forls | 
|  | --buffer-size | 7.1 sort: Sort text files | 
|  | --bytes | 4.3 fold: Wrap input lines to fit in specified width | 
|  | --bytes | 5.1 head: Output the first part of files | 
|  | --bytes | 5.2 tail: Output the last part of files | 
|  | --bytes | 5.3 split: Split a file into fixed-size pieces | 
|  | --bytes | 6.1 wc: Print byte, word, and line counts | 
|  | --bytes | 8.1 cut: Print selected parts of lines | 
|  | --bytes | 14.2 du: Estimate file space usage | 
|  | --c-shell | 10.4 dircolors: Color setup forls | 
|  | --changes | 13.1 chown: Change file owner and group | 
|  | --changes | 13.2 chgrp: Change group ownership | 
|  | --changes | 13.3 chmod: Change access permissions | 
|  | --characters | 8.1 cut: Print selected parts of lines | 
|  | --chars | 6.1 wc: Print byte, word, and line counts | 
|  | --check | 7.1 sort: Sort text files | 
|  | --check-chars | 7.2 uniq: Uniquify files | 
|  | --classify | 10.1.5 General output formatting | 
|  | --color | 10.1.5 General output formatting | 
|  | --columns | 4.2 pr: Paginate or columnate files for printing | 
|  | --command | 22.5 su: Run a command with substitute user and group id | 
|  | --count | 7.2 uniq: Uniquify files | 
|  | --count | 20.6 who: Print who is currently logged in | 
|  | --count-links | 14.2 du: Estimate file space usage | 
|  | --crown-margin | 4.1 fmt: Reformat paragraph text | 
|  | --csh | 10.4 dircolors: Color setup forls | 
|  | --date | 13.4 touch: Change file timestamps | 
|  | --date | 21.1.6 Options for date | 
|  | --delimiter | 8.1 cut: Print selected parts of lines | 
|  | --delimiters | 8.2 paste: Merge lines of files | 
|  | --dereference | 10.1.1 Which files are listed | 
|  | --dereference | 11.1 cp: Copy files and directories | 
|  | --dereference | 13.1 chown: Change file owner and group | 
|  | --dereference | 13.2 chgrp: Change group ownership | 
|  | --dereference | 14.2 du: Estimate file space usage | 
|  | --dereference | 14.3 stat: Report file or filesystem status | 
|  | --dereference-args | 14.2 du: Estimate file space usage | 
|  | --dereference-command-line | 10.1.1 Which files are listed | 
|  | --dictionary-order | 7.1 sort: Sort text files | 
|  | --digits | 5.4 csplit: Split a file into context-determined pieces | 
|  | --directory | 10.1.1 Which files are listed | 
|  | --directory | 11.3 install: Copy files and set attributes | 
|  | --directory | 11.5 rm: Remove files or directories | 
|  | --directory | 12.2 ln: Make links between files | 
|  | --dired | 10.1.2 What information is listed | 
|  | --double-space | 4.2 pr: Paginate or columnate files for printing | 
|  | --elide-empty-files | 5.4 csplit: Split a file into context-determined pieces | 
|  | --escape | 10.1.7 Formatting the file names | 
|  | --exact | 11.6 shred: Remove files more securely | 
|  | --exclude-from=FILE | 14.2 du: Estimate file space usage | 
|  | --exclude-type | 14.1 df: Report filesystem disk space usage | 
|  | --exclude=PATTERN | 14.2 du: Estimate file space usage | 
|  | --expand-tabs | 4.2 pr: Paginate or columnate files for printing | 
|  | --fast | 22.5 su: Run a command with substitute user and group id | 
|  | --field-separator | 7.1 sort: Sort text files | 
|  | --fields | 8.1 cut: Print selected parts of lines | 
|  | --file | 19.2 stty: Print or change terminal characteristics | 
|  | --file | 21.1.6 Options for date | 
|  | --file-type | 10.1.5 General output formatting | 
|  | --filesystem | 14.3 stat: Report file or filesystem status | 
|  | --first-line-number | 4.2 pr: Paginate or columnate files for printing | 
|  | --follow | 5.2 tail: Output the last part of files | 
|  | --footer-numbering | 3.3 nl: Number lines and write files | 
|  | --force | 11.1 cp: Copy files and directories | 
|  | --force | 11.4 mv: Move (rename) files | 
|  | --force | 11.5 rm: Remove files or directories | 
|  | --force | 11.6 shred: Remove files more securely | 
|  | --force | 12.2 ln: Make links between files | 
|  | --form-feed | 4.2 pr: Paginate or columnate files for printing | 
|  | --format | 3.4 od: Write files in octal or other formats | 
|  | --format | 10.1.2 What information is listed | 
|  | --format | 10.1.5 General output formatting | 
|  | --format | 10.1.5 General output formatting | 
|  | --format | 10.1.5 General output formatting | 
|  | --format | 10.1.5 General output formatting | 
|  | --format | 14.3 stat: Report file or filesystem status | 
|  | --format=format | 25.2 seq: Print numeric sequences | 
|  | --from | 13.1 chown: Change file owner and group | 
|  | --full-time | 10.1.2 What information is listed | 
|  | --general-numeric-sort | 7.1 sort: Sort text files | 
|  | --group | 11.3 install: Copy files and set attributes | 
|  | --group | 20.1 id: Print real and effective uid and gid | 
|  | --groups | 20.1 id: Print real and effective uid and gid | 
|  | --hardware-platform | 21.2 uname: Print system information | 
|  | --header | 4.2 pr: Paginate or columnate files for printing | 
|  | --header-numbering | 3.3 nl: Number lines and write files | 
|  | --heading | 20.6 who: Print who is currently logged in | 
|  | --help | 2. Common options | 
|  | --hide-control-chars | 10.1.7 Formatting the file names | 
|  | --human-readable | 2.2 Block size | 
|  | --human-readable | 10.1.2 What information is listed | 
|  | --human-readable | 14.1 df: Report filesystem disk space usage | 
|  | --human-readable | 14.2 du: Estimate file space usage | 
|  | --idle | 20.6 who: Print who is currently logged in | 
|  | --ignore-backups | 10.1.1 Which files are listed | 
|  | --ignore-case | 7.1 sort: Sort text files | 
|  | --ignore-case | 7.2 uniq: Uniquify files | 
|  | --ignore-case | 8.3 join: Join lines on a common field | 
|  | --ignore-environment | 22.2 env: Run a command in a modified environment | 
|  | --ignore-fail-on-non-empty | 12.6 rmdir: Remove empty directories | 
|  | --ignore-interrupts | 17.1 tee: Redirect output to multiple files | 
|  | --ignore-leading-blanks | 7.1 sort: Sort text files | 
|  | --ignore-nonprinting | 7.1 sort: Sort text files | 
|  | --ignore=pattern | 10.1.1 Which files are listed | 
|  | --indent | 4.2 pr: Paginate or columnate files for printing | 
|  | --indicator-style | 10.1.5 General output formatting | 
|  | --indicator-style | 10.1.5 General output formatting | 
|  | --indicator-style | 10.1.5 General output formatting | 
|  | --initial | 9.2 expand: Convert tabs to spaces | 
|  | --inode | 10.1.2 What information is listed | 
|  | --inodes | 14.1 df: Report filesystem disk space usage | 
|  | --interactive | 11.1 cp: Copy files and directories | 
|  | --interactive | 11.4 mv: Move (rename) files | 
|  | --interactive | 11.5 rm: Remove files or directories | 
|  | --interactive | 12.2 ln: Make links between files | 
|  | --iso-8601[=timespec] | 21.1.6 Options for date | 
|  | --iterations=NUMBER | 11.6 shred: Remove files more securely | 
|  | --join-blank-lines | 3.3 nl: Number lines and write files | 
|  | --join-lines | 4.2 pr: Paginate or columnate files for printing | 
|  | --keep-files | 5.4 csplit: Split a file into context-determined pieces | 
|  | --kernel-name | 21.2 uname: Print system information | 
|  | --kernel-release | 21.2 uname: Print system information | 
|  | --kernel-version | 21.2 uname: Print system information | 
|  | --key | 7.1 sort: Sort text files | 
|  | --length | 4.2 pr: Paginate or columnate files for printing | 
|  | --line-bytes | 5.3 split: Split a file into fixed-size pieces | 
|  | --lines | 5.1 head: Output the first part of files | 
|  | --lines | 5.2 tail: Output the last part of files | 
|  | --lines | 5.3 split: Split a file into fixed-size pieces | 
|  | --lines | 6.1 wc: Print byte, word, and line counts | 
|  | --link | 11.1 cp: Copy files and directories | 
|  | --literal | 10.1.7 Formatting the file names | 
|  | --local | 14.1 df: Report filesystem disk space usage | 
|  | --login | 22.5 su: Run a command with substitute user and group id | 
|  | --lookup | 20.6 who: Print who is currently logged in | 
|  | --machine | 21.2 uname: Print system information | 
|  | --max-depth=DEPTH | 14.2 du: Estimate file space usage | 
|  | --max-line-length | 6.1 wc: Print byte, word, and line counts | 
|  | --max-unchanged-stats | 5.2 tail: Output the last part of files | 
|  | --merge | 4.2 pr: Paginate or columnate files for printing | 
|  | --merge | 7.1 sort: Sort text files | 
|  | --mesg | 20.6 who: Print who is currently logged in | 
|  | --message | 20.6 who: Print who is currently logged in | 
|  | --mode | 11.3 install: Copy files and set attributes | 
|  | --mode | 12.3 mkdir: Make directories | 
|  | --mode | 12.4 mkfifo: Make FIFOs (named pipes) | 
|  | --mode | 12.5 mknod: Make block or character special files | 
|  | --month-sort | 7.1 sort: Sort text files | 
|  | --name | 20.1 id: Print real and effective uid and gid | 
|  | --no-create | 13.4 touch: Change file timestamps | 
|  | --no-dereference | 11.1 cp: Copy files and directories | 
|  | --no-dereference | 12.2 ln: Make links between files | 
|  | --no-dereference | 13.1 chown: Change file owner and group | 
|  | --no-dereference | 13.2 chgrp: Change group ownership | 
|  | --no-file-warnings | 4.2 pr: Paginate or columnate files for printing | 
|  | --no-group | 10.1.2 What information is listed | 
|  | --no-renumber | 3.3 nl: Number lines and write files | 
|  | --no-sync | 14.1 df: Report filesystem disk space usage | 
|  | --nodename | 21.2 uname: Print system information | 
|  | --number | 3.1 cat: Concatenate and write files | 
|  | --number-format | 3.3 nl: Number lines and write files | 
|  | --number-lines | 4.2 pr: Paginate or columnate files for printing | 
|  | --number-nonblank | 3.1 cat: Concatenate and write files | 
|  | --number-separator | 3.3 nl: Number lines and write files | 
|  | --number-width | 3.3 nl: Number lines and write files | 
|  | --numeric-sort | 7.1 sort: Sort text files | 
|  | --numeric-uid-gid | 10.1.2 What information is listed | 
|  | --omit-header | 4.2 pr: Paginate or columnate files for printing | 
|  | --omit-pagination | 4.2 pr: Paginate or columnate files for printing | 
|  | --one-file-system | 11.1 cp: Copy files and directories | 
|  | --one-file-system | 14.2 du: Estimate file space usage | 
|  | --only-delimited | 8.1 cut: Print selected parts of lines | 
|  | --operating-system | 21.2 uname: Print system information | 
|  | --output | 7.1 sort: Sort text files | 
|  | --output-delimiter | 8.1 cut: Print selected parts of lines | 
|  | --output-duplicates | 3.4 od: Write files in octal or other formats | 
|  | --output-tabs | 4.2 pr: Paginate or columnate files for printing | 
|  | --owner | 11.3 install: Copy files and set attributes | 
|  | --page-increment | 3.3 nl: Number lines and write files | 
|  | --page_width | 4.2 pr: Paginate or columnate files for printing | 
|  | --pages=page_range | 4.2 pr: Paginate or columnate files for printing | 
|  | --parents | 11.1 cp: Copy files and directories | 
|  | --parents | 12.3 mkdir: Make directories | 
|  | --parents | 12.6 rmdir: Remove empty directories | 
|  | --pid | 5.2 tail: Output the last part of files | 
|  | --portability | 14.1 df: Report filesystem disk space usage | 
|  | --portability | 18.3 pathchk: Check file name portability | 
|  | --prefix | 5.4 csplit: Split a file into context-determined pieces | 
|  | --preserve | 11.1 cp: Copy files and directories | 
|  | --preserve-environment | 22.5 su: Run a command with substitute user and group id | 
|  | --preserve-timestamps | 11.3 install: Copy files and set attributes | 
|  | --print-database | 10.4 dircolors: Color setup forls | 
|  | --print-type | 14.1 df: Report filesystem disk space usage | 
|  | --processor | 21.2 uname: Print system information | 
|  | --quiet | 5.1 head: Output the first part of files | 
|  | --quiet | 5.2 tail: Output the last part of files | 
|  | --quiet | 5.4 csplit: Split a file into context-determined pieces | 
|  | --quiet | 13.1 chown: Change file owner and group | 
|  | --quiet | 13.2 chgrp: Change group ownership | 
|  | --quiet | 13.3 chmod: Change access permissions | 
|  | --quiet | 19.4 tty: Print file name of terminal on standard input | 
|  | --quote-name | 10.1.7 Formatting the file names | 
|  | --quoting-style | 10.1.7 Formatting the file names | 
|  | --quoting-style | 10.1.7 Formatting the file names | 
|  | --quoting-style | 10.1.7 Formatting the file names | 
|  | --quoting-style | 10.1.7 Formatting the file names | 
|  | --read-bytes | 3.4 od: Write files in octal or other formats | 
|  | --real | 20.1 id: Print real and effective uid and gid | 
|  | --recursive | 10.1.1 Which files are listed | 
|  | --recursive | 11.1 cp: Copy files and directories | 
|  | --recursive | 11.5 rm: Remove files or directories | 
|  | --recursive | 13.1 chown: Change file owner and group | 
|  | --recursive | 13.2 chgrp: Change group ownership | 
|  | --recursive | 13.3 chmod: Change access permissions | 
|  | --reference | 13.1 chown: Change file owner and group | 
|  | --reference | 13.2 chgrp: Change group ownership | 
|  | --reference | 13.3 chmod: Change access permissions | 
|  | --reference | 13.4 touch: Change file timestamps | 
|  | --reference | 21.1.6 Options for date | 
|  | --regex | 3.2 tac: Concatenate and write files in reverse | 
|  | --remove | 11.6 shred: Remove files more securely | 
|  | --remove-destination | 11.1 cp: Copy files and directories | 
|  | --repeated | 7.2 uniq: Uniquify files | 
|  | --reply | 11.1 cp: Copy files and directories | 
|  | --reply | 11.4 mv: Move (rename) files | 
|  | --retry | 5.2 tail: Output the last part of files | 
|  | --reverse | 7.1 sort: Sort text files | 
|  | --reverse | 10.1.3 Sorting the output | 
|  | --rfc-822 | 21.1.6 Options for date | 
|  | --save | 19.2 stty: Print or change terminal characteristics | 
|  | --section-delimiter | 3.3 nl: Number lines and write files | 
|  | --sep-string | 4.2 pr: Paginate or columnate files for printing | 
|  | --separate-dirs | 14.2 du: Estimate file space usage | 
|  | --separator | 3.2 tac: Concatenate and write files in reverse | 
|  | --separator | 4.2 pr: Paginate or columnate files for printing | 
|  | --serial | 8.2 paste: Merge lines of files | 
|  | --set | 21.1.6 Options for date | 
|  | --sh | 10.4 dircolors: Color setup forls | 
|  | --shell | 22.5 su: Run a command with substitute user and group id | 
|  | --show-all | 3.1 cat: Concatenate and write files | 
|  | --show-control-chars | 4.2 pr: Paginate or columnate files for printing | 
|  | --show-control-chars | 10.1.7 Formatting the file names | 
|  | --show-ends | 3.1 cat: Concatenate and write files | 
|  | --show-nonprinting | 3.1 cat: Concatenate and write files | 
|  | --show-nonprinting | 4.2 pr: Paginate or columnate files for printing | 
|  | --show-tabs | 3.1 cat: Concatenate and write files | 
|  | --si | 2.2 Block size | 
|  | --si | 10.1.2 What information is listed | 
|  | --si | 14.1 df: Report filesystem disk space usage | 
|  | --si | 14.2 du: Estimate file space usage | 
|  | --silent | 5.1 head: Output the first part of files | 
|  | --silent | 5.2 tail: Output the last part of files | 
|  | --silent | 5.4 csplit: Split a file into context-determined pieces | 
|  | --silent | 13.1 chown: Change file owner and group | 
|  | --silent | 13.2 chgrp: Change group ownership | 
|  | --silent | 13.3 chmod: Change access permissions | 
|  | --silent | 19.4 tty: Print file name of terminal on standard input | 
|  | --size | 10.1.2 What information is listed | 
|  | --size=BYTES | 11.6 shred: Remove files more securely | 
|  | --skip-bytes | 3.4 od: Write files in octal or other formats | 
|  | --skip-chars | 7.2 uniq: Uniquify files | 
|  | --skip-fields | 7.2 uniq: Uniquify files | 
|  | --sleep-interval | 5.2 tail: Output the last part of files | 
|  | --sort | 10.1.3 Sorting the output | 
|  | --sort | 10.1.3 Sorting the output | 
|  | --sort | 10.1.3 Sorting the output | 
|  | --sort | 10.1.3 Sorting the output | 
|  | --sort | 10.1.3 Sorting the output | 
|  | --spaces | 4.3 fold: Wrap input lines to fit in specified width | 
|  | --sparse=when | 11.1 cp: Copy files and directories | 
|  | --split-only | 4.1 fmt: Reformat paragraph text | 
|  | --squeeze-blank | 3.1 cat: Concatenate and write files | 
|  | --starting-line-number | 3.3 nl: Number lines and write files | 
|  | --status | 6.4 md5sum: Print or check message-digests | 
|  | --strings | 3.4 od: Write files in octal or other formats | 
|  | --strip | 11.3 install: Copy files and set attributes | 
|  | --strip-trailing-slashes | 11.1 cp: Copy files and directories | 
|  | --strip-trailing-slashes | 11.4 mv: Move (rename) files | 
|  | --suffix | 2.1 Backup options | 
|  | --suffix | 5.4 csplit: Split a file into context-determined pieces | 
|  | --suffix | 11.1 cp: Copy files and directories | 
|  | --suffix | 11.3 install: Copy files and set attributes | 
|  | --suffix | 11.4 mv: Move (rename) files | 
|  | --suffix | 12.2 ln: Make links between files | 
|  | --suffix-length | 5.3 split: Split a file into fixed-size pieces | 
|  | --summarize | 14.2 du: Estimate file space usage | 
|  | --symbolic | 12.2 ln: Make links between files | 
|  | --symbolic-link | 11.1 cp: Copy files and directories | 
|  | --sync | 14.1 df: Report filesystem disk space usage | 
|  | --sysv | 6.2 sum: Print checksum and block counts | 
|  | --tabs | 9.2 expand: Convert tabs to spaces | 
|  | --tabs | 9.3 unexpand: Convert spaces to tabs | 
|  | --tabsize | 10.1.5 General output formatting | 
|  | --tagged-paragraph | 4.1 fmt: Reformat paragraph text | 
|  | --target-directory | 2.3 Target directory | 
|  | --target-directory | 11.1 cp: Copy files and directories | 
|  | --target-directory | 11.3 install: Copy files and set attributes | 
|  | --target-directory | 11.4 mv: Move (rename) files | 
|  | --target-directory | 12.2 ln: Make links between files | 
|  | --temporary-directory | 7.1 sort: Sort text files | 
|  | --terse | 14.3 stat: Report file or filesystem status | 
|  | --text | 6.4 md5sum: Print or check message-digests | 
|  | --time | 10.1.3 Sorting the output | 
|  | --time | 10.1.3 Sorting the output | 
|  | --time | 13.4 touch: Change file timestamps | 
|  | --time | 13.4 touch: Change file timestamps | 
|  | --time-style | 10.1.6 Formatting file timestamps | 
|  | --total | 14.2 du: Estimate file space usage | 
|  | --traditional | 3.4 od: Write files in octal or other formats | 
|  | --type | 14.1 df: Report filesystem disk space usage | 
|  | --uniform-spacing | 4.1 fmt: Reformat paragraph text | 
|  | --unique | 7.1 sort: Sort text files | 
|  | --unique | 7.2 uniq: Uniquify files | 
|  | --universal | 21.1.6 Options for date | 
|  | --update | 11.4 mv: Move (rename) files | 
|  | --user | 20.1 id: Print real and effective uid and gid | 
|  | --utc | 21.1.6 Options for date | 
|  | --verbose | 5.1 head: Output the first part of files | 
|  | --verbose | 5.2 tail: Output the last part of files | 
|  | --verbose | 5.3 split: Split a file into fixed-size pieces | 
|  | --verbose | 11.1 cp: Copy files and directories | 
|  | --verbose | 11.3 install: Copy files and set attributes | 
|  | --verbose | 11.4 mv: Move (rename) files | 
|  | --verbose | 11.5 rm: Remove files or directories | 
|  | --verbose | 11.6 shred: Remove files more securely | 
|  | --verbose | 12.2 ln: Make links between files | 
|  | --verbose | 12.3 mkdir: Make directories | 
|  | --verbose | 12.6 rmdir: Remove empty directories | 
|  | --verbose | 13.1 chown: Change file owner and group | 
|  | --verbose | 13.2 chgrp: Change group ownership | 
|  | --verbose | 13.3 chmod: Change access permissions | 
|  | --version | 2. Common options | 
|  | --version-control | 2.1 Backup options | 
|  | --version-control | 11.1 cp: Copy files and directories | 
|  | --version-control | 11.3 install: Copy files and set attributes | 
|  | --version-control | 11.4 mv: Move (rename) files | 
|  | --version-control | 12.2 ln: Make links between files | 
|  | --warn | 6.4 md5sum: Print or check message-digests | 
|  | --width | 3.4 od: Write files in octal or other formats | 
|  | --width | 4.1 fmt: Reformat paragraph text | 
|  | --width | 4.2 pr: Paginate or columnate files for printing | 
|  | --width | 4.3 fold: Wrap input lines to fit in specified width | 
|  | --width | 10.1.5 General output formatting | 
|  | --words | 6.1 wc: Print byte, word, and line counts | 
|  | --writable | 20.6 who: Print who is currently logged in | 
|  | --zero | 11.6 shred: Remove files more securely | 
|  | --zero-terminated | 7.1 sort: Sort text files | 
|  | -1 | 7.3 comm: Compare two sorted files line by line | 
|  | -1 | 8.3 join: Join lines on a common field | 
|  | -1 | 10.1.5 General output formatting | 
|  | -2 | 7.3 comm: Compare two sorted files line by line | 
|  | -2 | 8.3 join: Join lines on a common field | 
|  | -3 | 7.3 comm: Compare two sorted files line by line | 
|  | -a | 3.4 od: Write files in octal or other formats | 
|  | -A | 3.1 cat: Concatenate and write files | 
|  | -a | 4.2 pr: Paginate or columnate files for printing | 
|  | -A | 3.4 od: Write files in octal or other formats | 
|  | -a | 5.3 split: Split a file into fixed-size pieces | 
|  | -A | 10.1.1 Which files are listed | 
|  | -a | 8.3 join: Join lines on a common field | 
|  | -a | 9.3 unexpand: Convert spaces to tabs | 
|  | -a | 10.1.1 Which files are listed | 
|  | -a | 11.1 cp: Copy files and directories | 
|  | -a | 13.4 touch: Change file timestamps | 
|  | -a | 14.1 df: Report filesystem disk space usage | 
|  | -a | 14.2 du: Estimate file space usage | 
|  | -a | 16.3.6 Connectives for test | 
|  | -a | 17.1 tee: Redirect output to multiple files | 
|  | -a | 19.2 stty: Print or change terminal characteristics | 
|  | -a | 21.2 uname: Print system information | 
|  | -b | 2.1 Backup options | 
|  | -B | 3.1 cat: Concatenate and write files | 
|  | -b | 3.1 cat: Concatenate and write files | 
|  | -B | 10.1.1 Which files are listed | 
|  | -B | 14.1 df: Report filesystem disk space usage | 
|  | -b | 3.2 tac: Concatenate and write files in reverse | 
|  | -b | 3.3 nl: Number lines and write files | 
|  | -B | 14.2 du: Estimate file space usage | 
|  | -b | 3.4 od: Write files in octal or other formats | 
|  | -b | 4.3 fold: Wrap input lines to fit in specified width | 
|  | -b | 5.3 split: Split a file into fixed-size pieces | 
|  | -b | 5.4 csplit: Split a file into context-determined pieces | 
|  | -b | 6.4 md5sum: Print or check message-digests | 
|  | -b | 7.1 sort: Sort text files | 
|  | -b | 8.1 cut: Print selected parts of lines | 
|  | -b | 10.1.7 Formatting the file names | 
|  | -b | 10.4 dircolors: Color setup forls | 
|  | -b | 11.1 cp: Copy files and directories | 
|  | -b | 11.3 install: Copy files and set attributes | 
|  | -b | 11.4 mv: Move (rename) files | 
|  | -b | 12.2 ln: Make links between files | 
|  | -b | 14.2 du: Estimate file space usage | 
|  | -b | 16.3.1 File type tests | 
|  | -c | 3.4 od: Write files in octal or other formats | 
|  | -C | 5.3 split: Split a file into fixed-size pieces | 
|  | -c | 4.1 fmt: Reformat paragraph text | 
|  | -C | 10.1.5 General output formatting | 
|  | -c | 4.2 pr: Paginate or columnate files for printing | 
|  | -c | 5.1 head: Output the first part of files | 
|  | -c | 5.2 tail: Output the last part of files | 
|  | -c | 6.1 wc: Print byte, word, and line counts | 
|  | -c | 7.1 sort: Sort text files | 
|  | -c | 7.2 uniq: Uniquify files | 
|  | -c | 8.1 cut: Print selected parts of lines | 
|  | -c | 10.1.3 Sorting the output | 
|  | -c | 10.4 dircolors: Color setup forls | 
|  | -c | 11.3 install: Copy files and set attributes | 
|  | -c | 13.1 chown: Change file owner and group | 
|  | -c | 13.2 chgrp: Change group ownership | 
|  | -c | 13.3 chmod: Change access permissions | 
|  | -c | 13.4 touch: Change file timestamps | 
|  | -c | 14.2 du: Estimate file space usage | 
|  | -c | 14.3 stat: Report file or filesystem status | 
|  | -c | 16.3.1 File type tests | 
|  | -c | 22.5 su: Run a command with substitute user and group id | 
|  | -column | 4.2 pr: Paginate or columnate files for printing | 
|  | -d | 3.3 nl: Number lines and write files | 
|  | -D | 7.2 uniq: Uniquify files | 
|  | -D | 10.1.2 What information is listed | 
|  | -d | 3.4 od: Write files in octal or other formats | 
|  | -d | 4.2 pr: Paginate or columnate files for printing | 
|  | -D | 14.2 du: Estimate file space usage | 
|  | -d | 7.1 sort: Sort text files | 
|  | -d | 7.2 uniq: Uniquify files | 
|  | -d | 8.1 cut: Print selected parts of lines | 
|  | -d | 8.2 paste: Merge lines of files | 
|  | -d | 10.1.1 Which files are listed | 
|  | -d | 11.1 cp: Copy files and directories | 
|  | -d | 11.3 install: Copy files and set attributes | 
|  | -d | 11.5 rm: Remove files or directories | 
|  | -d | 12.2 ln: Make links between files | 
|  | -d | 13.4 touch: Change file timestamps | 
|  | -d | 16.3.1 File type tests | 
|  | -d | 21.1.6 Options for date | 
|  | -E | 3.1 cat: Concatenate and write files | 
|  | -e | 3.1 cat: Concatenate and write files | 
|  | -e | 4.2 pr: Paginate or columnate files for printing | 
|  | -e | 8.3 join: Join lines on a common field | 
|  | -e | 15.1 echo: Print a line of text | 
|  | -e | 16.3.3 File characteristic tests | 
|  | -ef | 16.3.3 File characteristic tests | 
|  | -eq | 16.3.5 Numeric tests | 
|  | -F | 4.2 pr: Paginate or columnate files for printing | 
|  | -f | 3.3 nl: Number lines and write files | 
|  | -f | 3.4 od: Write files in octal or other formats | 
|  | -F | 5.2 tail: Output the last part of files | 
|  | -F | 10.1.5 General output formatting | 
|  | -f | 4.2 pr: Paginate or columnate files for printing | 
|  | -f | 5.2 tail: Output the last part of files | 
|  | -F | 12.2 ln: Make links between files | 
|  | -f | 5.4 csplit: Split a file into context-determined pieces | 
|  | -F | 19.2 stty: Print or change terminal characteristics | 
|  | -f | 7.1 sort: Sort text files | 
|  | -f | 7.2 uniq: Uniquify files | 
|  | -f | 8.1 cut: Print selected parts of lines | 
|  | -f | 10.1.3 Sorting the output | 
|  | -f | 11.1 cp: Copy files and directories | 
|  | -f | 11.4 mv: Move (rename) files | 
|  | -f | 11.5 rm: Remove files or directories | 
|  | -f | 11.6 shred: Remove files more securely | 
|  | -f | 12.2 ln: Make links between files | 
|  | -f | 13.1 chown: Change file owner and group | 
|  | -f | 13.2 chgrp: Change group ownership | 
|  | -f | 13.3 chmod: Change access permissions | 
|  | -f | 13.4 touch: Change file timestamps | 
|  | -f | 14.3 stat: Report file or filesystem status | 
|  | -f | 16.3.1 File type tests | 
|  | -f | 21.1.6 Options for date | 
|  | -f | 22.5 su: Run a command with substitute user and group id | 
|  | -f format | 25.2 seq: Print numeric sequences | 
|  | -g | 7.1 sort: Sort text files | 
|  | -G | 10.1.2 What information is listed | 
|  | -G | 16.3.2 Access permission tests | 
|  | -g | 10.1.2 What information is listed | 
|  | -G | 20.1 id: Print real and effective uid and gid | 
|  | -g | 11.3 install: Copy files and set attributes | 
|  | -g | 16.3.2 Access permission tests | 
|  | -g | 19.2 stty: Print or change terminal characteristics | 
|  | -g | 20.1 id: Print real and effective uid and gid | 
|  | -ge | 16.3.5 Numeric tests | 
|  | -gt | 16.3.5 Numeric tests | 
|  | -h | 2.2 Block size | 
|  | -H | 10.1.1 Which files are listed | 
|  | -h | 3.3 nl: Number lines and write files | 
|  | -H | 11.1 cp: Copy files and directories | 
|  | -H | 14.1 df: Report filesystem disk space usage | 
|  | -h | 3.4 od: Write files in octal or other formats | 
|  | -h | 4.2 pr: Paginate or columnate files for printing | 
|  | -H | 14.2 du: Estimate file space usage | 
|  | -H | 20.6 who: Print who is currently logged in | 
|  | -h | 10.1.2 What information is listed | 
|  | -h | 13.1 chown: Change file owner and group | 
|  | -h | 13.2 chgrp: Change group ownership | 
|  | -h | 14.1 df: Report filesystem disk space usage | 
|  | -h | 14.2 du: Estimate file space usage | 
|  | -h | 16.3.1 File type tests | 
|  | -I | 10.1.1 Which files are listed | 
|  | -i | 3.3 nl: Number lines and write files | 
|  | -i | 3.4 od: Write files in octal or other formats | 
|  | -i | 4.2 pr: Paginate or columnate files for printing | 
|  | -i | 7.1 sort: Sort text files | 
|  | -i | 7.2 uniq: Uniquify files | 
|  | -i | 8.3 join: Join lines on a common field | 
|  | -i | 9.2 expand: Convert tabs to spaces | 
|  | -i | 10.1.2 What information is listed | 
|  | -i | 11.1 cp: Copy files and directories | 
|  | -i | 11.4 mv: Move (rename) files | 
|  | -i | 11.5 rm: Remove files or directories | 
|  | -i | 12.2 ln: Make links between files | 
|  | -i | 14.1 df: Report filesystem disk space usage | 
|  | -i | 17.1 tee: Redirect output to multiple files | 
|  | -i | 20.6 who: Print who is currently logged in | 
|  | -i | 21.2 uname: Print system information | 
|  | -i | 22.2 env: Run a command in a modified environment | 
|  | -I timespec | 21.1.6 Options for date | 
|  | -j | 3.4 od: Write files in octal or other formats | 
|  | -J | 4.2 pr: Paginate or columnate files for printing | 
|  | -j1 | 8.3 join: Join lines on a common field | 
|  | -j2 | 8.3 join: Join lines on a common field | 
|  | -k | 2.2 Block size | 
|  | -k | 5.4 csplit: Split a file into context-determined pieces | 
|  | -k | 7.1 sort: Sort text files | 
|  | -k | 10.1.5 General output formatting | 
|  | -k | 14.1 df: Report filesystem disk space usage | 
|  | -k | 14.2 du: Estimate file space usage | 
|  | -k | 16.3.2 Access permission tests | 
|  | -l | 3.3 nl: Number lines and write files | 
|  | -L | 6.1 wc: Print byte, word, and line counts | 
|  | -L | 10.1.1 Which files are listed | 
|  | -l | 3.4 od: Write files in octal or other formats | 
|  | -l | 4.2 pr: Paginate or columnate files for printing | 
|  | -L | 11.1 cp: Copy files and directories | 
|  | -l | 5.3 split: Split a file into fixed-size pieces | 
|  | -L | 14.2 du: Estimate file space usage | 
|  | -L | 14.3 stat: Report file or filesystem status | 
|  | -l | 6.1 wc: Print byte, word, and line counts | 
|  | -l | 10.1.2 What information is listed | 
|  | -L | 16.3.1 File type tests | 
|  | -l | 11.1 cp: Copy files and directories | 
|  | -l | 14.1 df: Report filesystem disk space usage | 
|  | -l | 14.2 du: Estimate file space usage | 
|  | -l | 20.6 who: Print who is currently logged in | 
|  | -l | 22.5 su: Run a command with substitute user and group id | 
|  | -le | 16.3.5 Numeric tests | 
|  | -lt | 16.3.5 Numeric tests | 
|  | -M | 7.1 sort: Sort text files | 
|  | -m | 4.2 pr: Paginate or columnate files for printing | 
|  | -m | 6.1 wc: Print byte, word, and line counts | 
|  | -m | 7.1 sort: Sort text files | 
|  | -m | 10.1.5 General output formatting | 
|  | -m | 11.3 install: Copy files and set attributes | 
|  | -m | 12.3 mkdir: Make directories | 
|  | -m | 12.4 mkfifo: Make FIFOs (named pipes) | 
|  | -m | 12.5 mknod: Make block or character special files | 
|  | -m | 13.4 touch: Change file timestamps | 
|  | -m | 20.6 who: Print who is currently logged in | 
|  | -m | 21.2 uname: Print system information | 
|  | -m | 22.5 su: Run a command with substitute user and group id | 
|  | -n | 3.1 cat: Concatenate and write files | 
|  | -N | 3.4 od: Write files in octal or other formats | 
|  | -n | 3.3 nl: Number lines and write files | 
|  | -N | 4.2 pr: Paginate or columnate files for printing | 
|  | -n | 4.2 pr: Paginate or columnate files for printing | 
|  | -N | 10.1.7 Formatting the file names | 
|  | -n | 5.1 head: Output the first part of files | 
|  | -n | 5.2 tail: Output the last part of files | 
|  | -n | 5.4 csplit: Split a file into context-determined pieces | 
|  | -n | 7.1 sort: Sort text files | 
|  | -n | 8.1 cut: Print selected parts of lines | 
|  | -n | 10.1.2 What information is listed | 
|  | -n | 12.2 ln: Make links between files | 
|  | -n | 15.1 echo: Print a line of text | 
|  | -n | 16.3.4 String tests | 
|  | -n | 20.1 id: Print real and effective uid and gid | 
|  | -n | 21.2 uname: Print system information | 
|  | -n | 22.3 nice: Run a command with modified scheduling priority | 
|  | -n NUMBER | 11.6 shred: Remove files more securely | 
|  | -ne | 16.3.5 Numeric tests | 
|  | -nt | 16.3.3 File characteristic tests | 
|  | -o | 3.4 od: Write files in octal or other formats | 
|  | -O | 16.3.2 Access permission tests | 
|  | -o | 4.2 pr: Paginate or columnate files for printing | 
|  | -o | 7.1 sort: Sort text files | 
|  | -o | 10.1.2 What information is listed | 
|  | -o | 11.3 install: Copy files and set attributes | 
|  | -o | 16.3.6 Connectives for test | 
|  | -o | 21.2 uname: Print system information | 
|  | -ot | 16.3.3 File characteristic tests | 
|  | -P | 11.1 cp: Copy files and directories | 
|  | -p | 3.3 nl: Number lines and write files | 
|  | -P | 14.1 df: Report filesystem disk space usage | 
|  | -p | 10.4 dircolors: Color setup forls | 
|  | -p | 11.1 cp: Copy files and directories | 
|  | -p | 11.3 install: Copy files and set attributes | 
|  | -p | 12.3 mkdir: Make directories | 
|  | -p | 12.6 rmdir: Remove empty directories | 
|  | -p | 16.3.1 File type tests | 
|  | -p | 18.3 pathchk: Check file name portability | 
|  | -p | 21.2 uname: Print system information | 
|  | -p | 22.5 su: Run a command with substitute user and group id | 
|  | -Q | 10.1.7 Formatting the file names | 
|  | -q | 5.1 head: Output the first part of files | 
|  | -q | 5.2 tail: Output the last part of files | 
|  | -q | 5.4 csplit: Split a file into context-determined pieces | 
|  | -q | 10.1.7 Formatting the file names | 
|  | -q | 20.6 who: Print who is currently logged in | 
|  | -R | 10.1.1 Which files are listed | 
|  | -r | 3.2 tac: Concatenate and write files in reverse | 
|  | -R | 11.1 cp: Copy files and directories | 
|  | -r | 4.2 pr: Paginate or columnate files for printing | 
|  | -R | 11.5 rm: Remove files or directories | 
|  | -r | 6.2 sum: Print checksum and block counts | 
|  | -r | 7.1 sort: Sort text files | 
|  | -R | 13.1 chown: Change file owner and group | 
|  | -r | 10.1.3 Sorting the output | 
|  | -R | 13.2 chgrp: Change group ownership | 
|  | -r | 11.1 cp: Copy files and directories | 
|  | -R | 13.3 chmod: Change access permissions | 
|  | -R | 21.1.6 Options for date | 
|  | -r | 11.5 rm: Remove files or directories | 
|  | -r | 13.4 touch: Change file timestamps | 
|  | -r | 16.3.2 Access permission tests | 
|  | -r | 20.1 id: Print real and effective uid and gid | 
|  | -r | 21.1.6 Options for date | 
|  | -r | 21.2 uname: Print system information | 
|  | -s | 3.1 cat: Concatenate and write files | 
|  | -S | 2.1 Backup options | 
|  | -S | 4.2 pr: Paginate or columnate files for printing | 
|  | -s | 3.2 tac: Concatenate and write files in reverse | 
|  | -S | 7.1 sort: Sort text files | 
|  | -s | 3.3 nl: Number lines and write files | 
|  | -S | 10.1.3 Sorting the output | 
|  | -s | 3.4 od: Write files in octal or other formats | 
|  | -s | 4.1 fmt: Reformat paragraph text | 
|  | -S | 11.1 cp: Copy files and directories | 
|  | -S | 11.3 install: Copy files and set attributes | 
|  | -s | 4.2 pr: Paginate or columnate files for printing | 
|  | -s | 4.3 fold: Wrap input lines to fit in specified width | 
|  | -S | 11.4 mv: Move (rename) files | 
|  | -S | 12.2 ln: Make links between files | 
|  | -s | 5.4 csplit: Split a file into context-determined pieces | 
|  | -s | 6.2 sum: Print checksum and block counts | 
|  | -S | 14.2 du: Estimate file space usage | 
|  | -s | 7.2 uniq: Uniquify files | 
|  | -S | 16.3.1 File type tests | 
|  | -s | 8.1 cut: Print selected parts of lines | 
|  | -s | 8.2 paste: Merge lines of files | 
|  | -s | 10.1.2 What information is listed | 
|  | -s | 11.1 cp: Copy files and directories | 
|  | -s | 11.3 install: Copy files and set attributes | 
|  | -s | 12.2 ln: Make links between files | 
|  | -s | 14.2 du: Estimate file space usage | 
|  | -s | 16.3.3 File characteristic tests | 
|  | -s | 19.4 tty: Print file name of terminal on standard input | 
|  | -s | 20.6 who: Print who is currently logged in | 
|  | -s | 21.1.6 Options for date | 
|  | -s | 21.2 uname: Print system information | 
|  | -s | 22.5 su: Run a command with substitute user and group id | 
|  | -s BYTES | 11.6 shred: Remove files more securely | 
|  | `-su' | 22.5 su: Run a command with substitute user and group id | 
|  | -t | 3.1 cat: Concatenate and write files | 
|  | -T | 3.1 cat: Concatenate and write files | 
|  | -t | 3.4 od: Write files in octal or other formats | 
|  | -T | 4.2 pr: Paginate or columnate files for printing | 
|  | -t | 4.1 fmt: Reformat paragraph text | 
|  | -T | 7.1 sort: Sort text files | 
|  | -T | 10.1.5 General output formatting | 
|  | -t | 4.2 pr: Paginate or columnate files for printing | 
|  | -t | 6.4 md5sum: Print or check message-digests | 
|  | -T | 14.1 df: Report filesystem disk space usage | 
|  | -T | 20.6 who: Print who is currently logged in | 
|  | -t | 7.1 sort: Sort text files | 
|  | -t | 9.2 expand: Convert tabs to spaces | 
|  | -t | 9.3 unexpand: Convert spaces to tabs | 
|  | -t | 10.1.3 Sorting the output | 
|  | -t | 14.1 df: Report filesystem disk space usage | 
|  | -t | 14.3 stat: Report file or filesystem status | 
|  | -t | 16.3.1 File type tests | 
|  | -u | 3.1 cat: Concatenate and write files | 
|  | -U | 10.1.3 Sorting the output | 
|  | -u | 4.1 fmt: Reformat paragraph text | 
|  | -u | 7.1 sort: Sort text files | 
|  | -u | 7.2 uniq: Uniquify files | 
|  | -u | 10.1.3 Sorting the output | 
|  | -u | 11.4 mv: Move (rename) files | 
|  | -u | 11.6 shred: Remove files more securely | 
|  | -u | 16.3.2 Access permission tests | 
|  | -u | 20.1 id: Print real and effective uid and gid | 
|  | -u | 20.6 who: Print who is currently logged in | 
|  | -u | 21.1.6 Options for date | 
|  | -u | 22.2 env: Run a command in a modified environment | 
|  | -unset | 22.2 env: Run a command in a modified environment | 
|  | -V | 11.1 cp: Copy files and directories | 
|  | -v | 3.1 cat: Concatenate and write files | 
|  | -V | 11.3 install: Copy files and set attributes | 
|  | -v | 3.3 nl: Number lines and write files | 
|  | -v | 3.4 od: Write files in octal or other formats | 
|  | -V | 11.4 mv: Move (rename) files | 
|  | -v | 4.2 pr: Paginate or columnate files for printing | 
|  | -V | 12.2 ln: Make links between files | 
|  | -v | 5.1 head: Output the first part of files | 
|  | -v | 5.2 tail: Output the last part of files | 
|  | -v | 10.1.3 Sorting the output | 
|  | -v | 11.1 cp: Copy files and directories | 
|  | -v | 11.3 install: Copy files and set attributes | 
|  | -v | 11.4 mv: Move (rename) files | 
|  | -v | 11.5 rm: Remove files or directories | 
|  | -v | 11.6 shred: Remove files more securely | 
|  | -v | 12.2 ln: Make links between files | 
|  | -v | 12.3 mkdir: Make directories | 
|  | -v | 12.6 rmdir: Remove empty directories | 
|  | -v | 13.1 chown: Change file owner and group | 
|  | -v | 13.2 chgrp: Change group ownership | 
|  | -v | 13.3 chmod: Change access permissions | 
|  | -v | 21.2 uname: Print system information | 
|  | -W | 4.2 pr: Paginate or columnate files for printing | 
|  | -w | 3.3 nl: Number lines and write files | 
|  | -w | 3.4 od: Write files in octal or other formats | 
|  | -w | 4.1 fmt: Reformat paragraph text | 
|  | -w | 4.2 pr: Paginate or columnate files for printing | 
|  | -w | 4.3 fold: Wrap input lines to fit in specified width | 
|  | -w | 6.1 wc: Print byte, word, and line counts | 
|  | -w | 6.4 md5sum: Print or check message-digests | 
|  | -w | 7.2 uniq: Uniquify files | 
|  | -w | 10.1.5 General output formatting | 
|  | -w | 16.3.2 Access permission tests | 
|  | -w | 20.6 who: Print who is currently logged in | 
|  | -width | 4.1 fmt: Reformat paragraph text | 
|  | -X | 10.1.3 Sorting the output | 
|  | -x | 3.4 od: Write files in octal or other formats | 
|  | -x | 10.1.5 General output formatting | 
|  | -x | 11.1 cp: Copy files and directories | 
|  | -x | 11.6 shred: Remove files more securely | 
|  | -x | 14.1 df: Report filesystem disk space usage | 
|  | -x | 14.2 du: Estimate file space usage | 
|  | -x | 16.3.2 Access permission tests | 
|  | -X FILE | 14.2 du: Estimate file space usage | 
|  | -z | 5.4 csplit: Split a file into context-determined pieces | 
|  | -z | 7.1 sort: Sort text files | 
|  | -z | 11.6 shred: Remove files more securely | 
|  | -z | 16.3.4 String tests | 
| 
 |