|  | Index Entry | Section | 
|---|
| 
 | 
| C |  |  | 
|---|
|  | c for character special file | 12.5 mknod: Make block or character special files | 
|  | C shell syntax for color setup | 10.4 dircolors: Color setup forls | 
|  | C-s/C-q flow control | 19.2.2 Input settings | 
|  | calendar date item | 27.2 Calendar date items | 
|  | case folding | 7.1 sort: Sort text files | 
|  | case translation | 19.2.4 Local settings | 
|  | case, ignored in dates | 27.1 General date syntax | 
|  | cat | 3.1 cat: Concatenate and write files | 
|  | cbreak | 19.2.5 Combination settings | 
|  | cbs | 11.2 dd: Convert and copy a file | 
|  | CD-ROM filesystem type | 14.1 df: Report filesystem disk space usage | 
|  | cdfs filesystem type | 14.1 df: Report filesystem disk space usage | 
|  | change or print terminal settings | 19.2 stty: Print or change terminal characteristics | 
|  | changed files, verbosely describing | 13.2 chgrp: Change group ownership | 
|  | changed owners, verbosely describing | 13.1 chown: Change file owner and group | 
|  | changing access permissions | 13.3 chmod: Change access permissions | 
|  | changing file attributes | 13. Changing file attributes | 
|  | changing file ownership | 13.1 chown: Change file owner and group | 
|  | changing file timestamps | 13.4 touch: Change file timestamps | 
|  | changing group ownership | 13.1 chown: Change file owner and group | 
|  | changing group ownership | 13.2 chgrp: Change group ownership | 
|  | changing special permissions | 26.2.3 Changing Special Permissions | 
|  | character classes | 9.1.1 Specifying sets of characters | 
|  | character count | 6.1 wc: Print byte, word, and line counts | 
|  | character size | 19.2.1 Control settings | 
|  | character special check | 16.3.1 File type tests | 
|  | character special files | 12.5 mknod: Make block or character special files | 
|  | character special files, creating | 12.5 mknod: Make block or character special files | 
|  | characters, special | 19.2.6 Special characters | 
|  | check file types | 16.3 test: Check file types and compare values | 
|  | checking for sortedness | 7.1 sort: Sort text files | 
|  | checksum, 128-bit | 6.4 md5sum: Print or check message-digests | 
|  | checksum, 16-bit | 6.2 sum: Print checksum and block counts | 
|  | chgrp | 13.2 chgrp: Change group ownership | 
|  | chmod | 13.3 chmod: Change access permissions | 
|  | chown | 13.1 chown: Change file owner and group | 
|  | chroot | 22.1 chroot: Run a command with a different root directory | 
|  | cksum | 6.3 cksum: Print CRC checksum and byte counts | 
|  | clocal | 19.2.1 Control settings | 
|  | cntrl | 9.1.1 Specifying sets of characters | 
|  | color database, printing | 10.4 dircolors: Color setup forls | 
|  | color setup | 10.4 dircolors: Color setup forls | 
|  | color, distinguishing file types with | 10.1.5 General output formatting | 
|  | cols | 19.2.7 Special settings | 
|  | COLUMNS | 10.1.5 General output formatting | 
|  | columns | 19.2.7 Special settings | 
|  | COLUMNS | 19.2.7 Special settings | 
|  | combination settings | 19.2.5 Combination settings | 
|  | comm | 7.3 comm: Compare two sorted files line by line | 
|  | commands for controlling processes | 23. Process control | 
|  | commands for delaying | 24. Delaying | 
|  | commands for exit status | 16. Conditions | 
|  | commands for file name manipulation | 18. File name manipulation | 
|  | commands for invoking other commands | 22. Modified command invocation | 
|  | commands for printing text | 15. Printing text | 
|  | commands for printing the working context | 19. Working context | 
|  | commands for printing user information | 20. User information | 
|  | commands for redirection | 17. Redirection | 
|  | commands for system context | 21. System context | 
|  | commas, outputting between files | 10.1.5 General output formatting | 
|  | comments, in dates | 27.1 General date syntax | 
|  | common field, joining on | 8.3 join: Join lines on a common field | 
|  | common lines | 7.3 comm: Compare two sorted files line by line | 
|  | common options | 2. Common options | 
|  | compare values | 16.3 test: Check file types and compare values | 
|  | comparing sorted files | 7.3 comm: Compare two sorted files line by line | 
|  | comparison operators | 16.4.3 Relations for expr | 
|  | concatenate and write files | 3.1 cat: Concatenate and write files | 
|  | conditional executability | 26.2.4 Conditional Executability | 
|  | conditions | 16. Conditions | 
|  | conflicts with shell built-ins | 16.3 test: Check file types and compare values | 
|  | conflicts with shell built-ins | 19.1 pwd: Print working directory | 
|  | conflicts with shell built-ins | 22.3 nice: Run a command with modified scheduling priority | 
|  | connectives, logical | 16.3.6 Connectives for test | 
|  | connectives, logical | 16.4.3 Relations for expr | 
|  | context splitting | 5.4 csplit: Split a file into context-determined pieces | 
|  | context, system | 21. System context | 
|  | control characters, using `^c' | 19.2.4 Local settings | 
|  | control settings | 19.2.1 Control settings | 
|  | conv | 11.2 dd: Convert and copy a file | 
|  | conversion block size | 11.2 dd: Convert and copy a file | 
|  | converting tabs to spaces | 9.2 expand: Convert tabs to spaces | 
|  | converting while copying a file | 11.2 dd: Convert and copy a file | 
|  | cooked | 19.2.5 Combination settings | 
|  | Coordinated Universal Time | 21.1.6 Options for date | 
|  | copying directories recursively | 11.1 cp: Copy files and directories | 
|  | copying directories recursively | 11.1 cp: Copy files and directories | 
|  | copying existing permissions | 26.2.2 Copying Existing Permissions | 
|  | copying files | 3.1 cat: Concatenate and write files | 
|  | copying files and directories | 11.1 cp: Copy files and directories | 
|  | copying files and setting attributes | 11.3 install: Copy files and set attributes | 
|  | count | 11.2 dd: Convert and copy a file | 
|  | cp | 11.1 cp: Copy files and directories | 
|  | crashes and corruption | 14.4 sync: Synchronize data on disk with memory | 
|  | CRC checksum | 6.3 cksum: Print CRC checksum and byte counts | 
|  | cread | 19.2.1 Control settings | 
|  | creating directories | 12.3 mkdir: Make directories | 
|  | creating FIFOs (named pipes) | 12.4 mkfifo: Make FIFOs (named pipes) | 
|  | creating links (hard only) | 12.1 link: Make a hard link via the link syscall | 
|  | creating links (hard or soft) | 12.2 ln: Make links between files | 
|  | crn | 19.2.3 Output settings | 
|  | crown margin | 4.1 fmt: Reformat paragraph text | 
|  | crt | 19.2.5 Combination settings | 
|  | crterase | 19.2.4 Local settings | 
|  | crtkill | 19.2.4 Local settings | 
|  | crtscts | 19.2.1 Control settings | 
|  | cshsyntax for color setup | 10.4 dircolors: Color setup forls | 
|  | csn | 19.2.1 Control settings | 
|  | csplit | 5.4 csplit: Split a file into context-determined pieces | 
|  | cstopb | 19.2.1 Control settings | 
|  | ctime, printing or sorting by | 10.1.3 Sorting the output | 
|  | ctlecho | 19.2.4 Local settings | 
|  | current working directory, printing | 19.1 pwd: Print working directory | 
|  | cut | 8.1 cut: Print selected parts of lines | 
|  | cyclic redundancy check | 6.3 cksum: Print CRC checksum and byte counts | 
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