|  | Index Entry | Section | 
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| S |  |  | 
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|  | Salz, Rich | 27.8 Authors of getdate | 
|  | same file check | 16.3.3 File characteristic tests | 
|  | sane | 19.2.5 Combination settings | 
|  | scheduling priority, modifying | 22.3 nice: Run a command with modified scheduling priority | 
|  | screen columns | 4.3 fold: Wrap input lines to fit in specified width | 
|  | seconds since the epoch | 21.1.1 Time directives | 
|  | section delimiters of pages | 3.3 nl: Number lines and write files | 
|  | seek | 11.2 dd: Convert and copy a file | 
|  | self-backups | 11.1 cp: Copy files and directories | 
|  | send a signal to processes | 23.1 kill: Send a signal to processes | 
|  | sentences and line-breaking | 4.1 fmt: Reformat paragraph text | 
|  | separator for numbers in seq | 25.2 seq: Print numeric sequences | 
|  | seq | 25.2 seq: Print numeric sequences | 
|  | sequence of numbers | 25.2 seq: Print numeric sequences | 
|  | set-group-id check | 16.3.2 Access permission tests | 
|  | set-user-id check | 16.3.2 Access permission tests | 
|  | setgid | 26.1 Structure of File Permissions | 
|  | setting permissions | 26.2.1 Setting Permissions | 
|  | setting the hostname | 21.3 hostname: Print or set system name | 
|  | setting the time | 21.1.5 Setting the time | 
|  | setuid | 26.1 Structure of File Permissions | 
|  | setup for color | 10.4 dircolors: Color setup forls | 
|  | shsyntax for color setup | 10.4 dircolors: Color setup forls | 
|  | SHELL | 22.5 su: Run a command with substitute user and group id | 
|  | SHELL environment variable, and color | 10.4 dircolors: Color setup forls | 
|  | shell utilities |  | 
|  | shred | 11.6 shred: Remove files more securely | 
|  | SI output | 2.2 Block size | 
|  | SI output | 10.1.2 What information is listed | 
|  | SI output | 14.1 df: Report filesystem disk space usage | 
|  | SI output | 14.2 du: Estimate file space usage | 
|  | simple backup method | 2.1 Backup options | 
|  | SIMPLE_BACKUP_SUFFIX | 2.1 Backup options | 
|  | single-column output of files | 10.1.5 General output formatting | 
|  | size | 19.2.7 Special settings | 
|  | size for main memory sorting | 7.1 sort: Sort text files | 
|  | size of file to shred | 11.6 shred: Remove files more securely | 
|  | size of files, reporting | 10.1.2 What information is listed | 
|  | size of files, sorting files by | 10.1.3 Sorting the output | 
|  | skip | 11.2 dd: Convert and copy a file | 
|  | sleep | 24.1 sleep: Delay for a specified time | 
|  | socket check | 16.3.1 File type tests | 
|  | software flow control | 19.2.2 Input settings | 
|  | sort | 7.1 sort: Sort text files | 
|  | sort field | 7.1 sort: Sort text files | 
|  | sort zero-terminated lines | 7.1 sort: Sort text files | 
|  | sorted files, operations on | 7. Operating on sorted files | 
|  | sorting files | 7.1 sort: Sort text files | 
|  | sorting lsoutput | 10.1.3 Sorting the output | 
|  | space | 9.1.1 Specifying sets of characters | 
|  | sparse files, copying | 11.1 cp: Copy files and directories | 
|  | special characters | 19.2.6 Special characters | 
|  | special file types | 12. Special file types | 
|  | special file types | 12. Special file types | 
|  | special files | 12.5 mknod: Make block or character special files | 
|  | special settings | 19.2.7 Special settings | 
|  | specifying sets of characters | 9.1.1 Specifying sets of characters | 
|  | speed | 19.2.7 Special settings | 
|  | split | 5.3 split: Split a file into fixed-size pieces | 
|  | splitting a file into pieces | 5.3 split: Split a file into fixed-size pieces | 
|  | splitting a file into pieces by context | 5.4 csplit: Split a file into context-determined pieces | 
|  | squeezing blank lines | 3.1 cat: Concatenate and write files | 
|  | squeezing repeat characters | 9.1.3 Squeezing repeats and deleting | 
|  | Stallman, R. | 1. Introduction | 
|  | standard input | 2. Common options | 
|  | standard output | 2. Common options | 
|  | start | 19.2.6 Special characters | 
|  | stat | 14.3 stat: Report file or filesystem status | 
|  | status time, printing or sorting by | 10.1.3 Sorting the output | 
|  | sticky | 26.1 Structure of File Permissions | 
|  | sticky bit check | 16.3.2 Access permission tests | 
|  | stop | 19.2.6 Special characters | 
|  | stop bits | 19.2.1 Control settings | 
|  | strftime and date | 21.1 date: Print or set system date and time | 
|  | string constants, outputting | 3.4 od: Write files in octal or other formats | 
|  | string expressions | 16.4.1 String expressions | 
|  | string tests | 16.3.4 String tests | 
|  | strip directory and suffix from file names | 18.1 basename: Strip directory and suffix from a file name | 
|  | stripping non-directory suffix | 18.2 dirname: Strip non-directory suffix from a file name | 
|  | stripping symbol table information | 11.3 install: Copy files and set attributes | 
|  | stripping trailing slashes | 11.1 cp: Copy files and directories | 
|  | stripping trailing slashes | 11.4 mv: Move (rename) files | 
|  | stty | 19.2 stty: Print or change terminal characteristics | 
|  | su | 22.5 su: Run a command with substitute user and group id | 
|  | substitute user and group ids | 22.5 su: Run a command with substitute user and group id | 
|  | substr | 16.4.1 String expressions | 
|  | subtracting permissions | 26.2.1 Setting Permissions | 
|  | subtraction | 16.4.2 Numeric expressions | 
|  | successful exit | 16.2 true: Do nothing, successfully | 
|  | suffix, stripping from file names | 18.1 basename: Strip directory and suffix from a file name | 
|  | sum | 6.2 sum: Print checksum and block counts | 
|  | summarizing files | 6. Summarizing files | 
|  | super-user, becoming | 22.5 su: Run a command with substitute user and group id | 
|  | superblock, writing | 14.4 sync: Synchronize data on disk with memory | 
|  | supplementary groups, printing | 20.4 groups: Print group names a user is in | 
|  | susp | 19.2.6 Special characters | 
|  | swab (byte-swapping) | 11.2 dd: Convert and copy a file | 
|  | swap space, saving text image in | 26.1 Structure of File Permissions | 
|  | swtch | 19.2.6 Special characters | 
|  | symbol table information, stripping | 11.3 install: Copy files and set attributes | 
|  | symbolic (soft) links, creating | 12.2 ln: Make links between files | 
|  | symbolic link check | 16.3.1 File type tests | 
|  | symbolic link, defined | 12.2 ln: Make links between files | 
|  | symbolic links and pwd | 19.1 pwd: Print working directory | 
|  | symbolic links, changing group | 13.2 chgrp: Change group ownership | 
|  | symbolic links, changing owner | 13.1 chown: Change file owner and group | 
|  | symbolic links, changing owner | 13.1 chown: Change file owner and group | 
|  | symbolic links, changing owner | 13.1 chown: Change file owner and group | 
|  | symbolic links, changing owner | 13.2 chgrp: Change group ownership | 
|  | symbolic links, copying | 11.1 cp: Copy files and directories | 
|  | symbolic links, copying | 11.1 cp: Copy files and directories | 
|  | symbolic links, copying with | 11.1 cp: Copy files and directories | 
|  | symbolic links, dereferencing | 10.1.1 Which files are listed | 
|  | symbolic links, dereferencing | 10.1.1 Which files are listed | 
|  | symbolic links, dereferencing in du | 14.2 du: Estimate file space usage | 
|  | symbolic links, dereferencing in stat | 14.3 stat: Report file or filesystem status | 
|  | symbolic links, permissions of | 13.3 chmod: Change access permissions | 
|  | symbolic modes | 26.2 Symbolic Modes | 
|  | sync | 14.4 sync: Synchronize data on disk with memory | 
|  | sync (padding with nulls) | 11.2 dd: Convert and copy a file | 
|  | synchronize disk and memory | 14.4 sync: Synchronize data on disk with memory | 
|  | syslog | 22.5 su: Run a command with substitute user and group id | 
|  | system context | 21. System context | 
|  | system information, printing | 21.2 uname: Print system information | 
|  | system name, printing | 21.3 hostname: Print or set system name | 
|  | System V sum | 6.2 sum: Print checksum and block counts | 
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