| Index Entry |  Section | 
 
  | 
| I |  |  | 
 | ibs | 11.2 dd: Convert and copy a file | 
 | icanon | 19.2.4 Local settings | 
 | icrnl | 19.2.2 Input settings | 
 | id | 20.1 id: Print real and effective uid and gid | 
 | idle time | 20.6 who: Print who is currently logged in | 
 | iexten | 19.2.4 Local settings | 
 | if | 11.2 dd: Convert and copy a file | 
 | ignbrk | 19.2.2 Input settings | 
 | igncr | 19.2.2 Input settings | 
 | ignore filesystems | 14.1 df: Report filesystem disk space usage | 
 | ignoring case | 7.1 sort: Sort text files | 
 | ignpar | 19.2.2 Input settings | 
 | imaxbel | 19.2.2 Input settings | 
 | immunity to hangups | 22.4 nohup: Run a command immune to hangups | 
 | implementation, hardware | 21.2 uname: Print system information | 
 | indenting lines | 4.2 pr: Paginate or columnate files for printing | 
 | index | 16.4.1 String expressions | 
 | information, about current users | 20.6 who: Print who is currently logged in | 
 | initial part of files, outputting | 5.1 head: Output the first part of files | 
 | initial tabs, converting | 9.2 expand: Convert tabs to spaces | 
 | inlcr | 19.2.2 Input settings | 
 | inode number, printing | 10.1.2 What information is listed | 
 | inode usage | 14.1 df: Report filesystem disk space usage | 
 | inode, and hard links | 12.2 ln: Make links between files | 
 | inodes, written buffered | 14.4 sync: Synchronize data on disk with memory | 
 | inpck | 19.2.2 Input settings | 
 | input block size | 11.2 dd: Convert and copy a file | 
 | input settings | 19.2.2 Input settings | 
 | input tabs | 4.2 pr: Paginate or columnate files for printing | 
 | install | 11.3 install: Copy files and set attributes | 
 | interactivity | 11.1 cp: Copy files and directories | 
 | interactivity | 11.4 mv: Move (rename) files | 
 | intr | 19.2.6 Special characters | 
 | invocation of commands, modified | 22. Modified command invocation | 
 | isig | 19.2.4 Local settings | 
 | ISO 8601 date format | 27.2 Calendar date items | 
 | ispeed | 19.2.7 Special settings | 
 | istrip | 19.2.2 Input settings | 
 | items in date strings | 27.1 General date syntax | 
 | iterations, selecting the number of | 11.6 shred: Remove files more securely | 
 | iuclc | 19.2.2 Input settings | 
 | ixany | 19.2.2 Input settings | 
 | ixoff | 19.2.2 Input settings | 
 | ixon | 19.2.2 Input settings | 
 
  | 
| J |  |  | 
 | join | 8.3 join: Join lines on a common field | 
 
  | 
| K |  |  | 
 | kernel name | 21.2 uname: Print system information | 
 | kernel release | 21.2 uname: Print system information | 
 | kernel version | 21.2 uname: Print system information | 
 | kibibyte, definition of | 2.2 Block size | 
 | kibibytes for file sizes | 14.2 du: Estimate file space usage | 
 | kibibytes for filesystem sizes | 14.1 df: Report filesystem disk space usage | 
 | kill | 19.2.6 Special characters | 
 | kilobyte, definition of | 2.2 Block size | 
 | Knuth, Donald E. | 4.1 fmt: Reformat paragraph text | 
 
  | 
| L |  |  | 
 | language, in dates | 27.1 General date syntax | 
 | language, in dates | 27.1 General date syntax | 
 | last day | 21.1.6 Options for date | 
 | last in date strings | 27.1 General date syntax | 
 | last part of files, outputting | 5.2 tail: Output the last part of files | 
 | LC_ALL | 7.1 sort: Sort text files | 
 | LC_ALL | 10.1 ls: List directory contents | 
 | LC_COLLATE | 7.1 sort: Sort text files | 
 | LC_COLLATE | 7.2 uniq: Uniquify files | 
 | LC_COLLATE | 7.3 comm: Compare two sorted files line by line | 
 | LC_COLLATE | 8.3 join: Join lines on a common field | 
 | LC_COLLATE | 16.4.3 Relations for expr | 
 | LC_CTYPE | 7.1 sort: Sort text files | 
 | LC_CTYPE | 7.1 sort: Sort text files | 
 | LC_CTYPE | 7.1 sort: Sort text files | 
 | LC_CTYPE | 7.1 sort: Sort text files | 
 | LC_MESSAGES | 4.2 pr: Paginate or columnate files for printing | 
 | LC_NUMERIC | 2.2 Block size | 
 | LC_NUMERIC | 7.1 sort: Sort text files | 
 | LC_NUMERIC | 7.1 sort: Sort text files | 
 | LC_TIME | 4.2 pr: Paginate or columnate files for printing | 
 | LC_TIME | 7.1 sort: Sort text files | 
 | LC_TIME | 10.1.6 Formatting file timestamps | 
 | LC_TIME | 10.1.6 Formatting file timestamps | 
 | LC_TIME | 10.1.6 Formatting file timestamps | 
 | LCASE | 19.2.5 Combination settings | 
 | lcase | 19.2.5 Combination settings | 
 | lcase, converting to | 11.2 dd: Convert and copy a file | 
 | lchown | 13.1 chown: Change file owner and group | 
 | lchown | 13.1 chown: Change file owner and group | 
 | lchown | 13.2 chgrp: Change group ownership | 
 | lchown | 13.2 chgrp: Change group ownership | 
 | leading directories, creating missing | 11.3 install: Copy files and set attributes | 
 | leading directory components, stripping | 18.1 basename: Strip directory and suffix from a file name | 
 | left margin | 4.2 pr: Paginate or columnate files for printing | 
 | length | 16.4.1 String expressions | 
 | limiting output of du | 14.2 du: Estimate file space usage | 
 | line | 19.2.7 Special settings | 
 | line count | 6.1 wc: Print byte, word, and line counts | 
 | line numbering | 3.3 nl: Number lines and write files | 
 | line settings of terminal | 19.2 stty: Print or change terminal characteristics | 
 | line-breaking | 4.1 fmt: Reformat paragraph text | 
 | line-by-line comparison | 7.3 comm: Compare two sorted files line by line | 
 | LINES | 19.2.7 Special settings | 
 | link | 12.1 link: Make a hard link via the link syscall | 
 | links, creating | 12.1 link: Make a hard link via the link syscall | 
 | links, creating | 12.2 ln: Make links between files | 
 | Linux filesystem types | 14.1 df: Report filesystem disk space usage | 
 | literal directives | 21.1.3 Literal directives | 
 | litout | 19.2.5 Combination settings | 
 | ln | 12.2 ln: Make links between files | 
 | ln format for nl | 3.3 nl: Number lines and write files | 
 | lnext | 19.2.6 Special characters | 
 | local filesystem types | 14.1 df: Report filesystem disk space usage | 
 | local settings | 19.2.4 Local settings | 
 | logging out and continuing to run | 22.4 nohup: Run a command immune to hangups | 
 | logical and operator | 16.3.6 Connectives for test | 
 | logical and operator | 16.4.3 Relations for expr | 
 | logical connectives | 16.3.6 Connectives for test | 
 | logical connectives | 16.4.3 Relations for expr | 
 | logical or operator | 16.3.6 Connectives for test | 
 | logical or operator | 16.4.3 Relations for expr | 
 | logical pages, numbering on | 3.3 nl: Number lines and write files | 
 | login name, printing | 20.2 logname: Print current login name | 
 | login sessions, printing users with | 20.5 users: Print login names of users currently logged in | 
 | login shell | 22.5 su: Run a command with substitute user and group id | 
 | login shell, creating | 22.5 su: Run a command with substitute user and group id | 
 | login time | 20.6 who: Print who is currently logged in | 
 | LOGNAME | 22.5 su: Run a command with substitute user and group id | 
 | logname | 20.2 logname: Print current login name | 
 | long ls format | 10.1.2 What information is listed | 
 | lower | 9.1.1 Specifying sets of characters | 
 | lowercase, translating to output | 19.2.3 Output settings | 
 | ls | 10.1 ls: List directory contents | 
 | LS_BLOCK_SIZE | 2.2 Block size | 
 | LS_COLORS | 10.4 dircolors: Color setup for ls | 
 
  |