break

break

Exit from a for, while, until, or select loop SYNTAX break [n] If n is supplied, the nth enclosing loop is exited. n must be greater than or equal to 1. The return status is zero unless n is not greater than or equal to 1. This is a BASH shell builtin, … Continued
builtin

builtin

Run a shell builtin, passing it args, and return its exit status. Syntax builtin [shell-builtin [args]] This is useful when defining a shell function with the same name as a shell builtin, retaining the functionality of the builtin within the … Continued
bzip2

bzip2

Compress or decompress named file(s). Syntax bzip2 [ -cdfkqstvzVL123456789 ] [ filenames ... ] bunzip2 [ -fkvsVL ] [ filenames ... ] bzcat [ -s ] [ filenames ... ] bzip2recover filename Key -c --stdout Compress or decompress to standard … Continued
cal

cal

Display a calendar Syntax cal [-mjy] [[month] year] Options: -m Display monday as the first day of the week. -j Display julian dates (days one-based, numbered from January 1). -y Display a calendar for the current year. A single parameter … Continued
case

case

Conditionally perform a command, case will selectively execute the command-list corresponding to the first pattern that matches word. Syntax case word in [ [(] pattern [| pattern]...) command-list ;;]... esac The `|’ is used to separate multiple patterns, and the `)’ operator terminates a pattern list. A list of patterns and … Continued
cat

cat

Concatenate and print (display) the content of files. Syntax cat [Options] [File]... Concatenate FILE(s), or standard input, to standard output. -A, --show-all equivalent to -vET -b, --number-nonblank number nonblank output lines -e equivalent to -vE -E, --show-ends display $ at … Continued
cd

cd

Change Directory – change the current working directory to a specific Folder. Syntax cd [Options] [Directory] Key -P Do not follow symbolic links -L Follow symbolic links (default) If directory is given, changes the shell’s working directory todirectory. If not, changes to HOME (shell … Continued
cfdisk

cfdisk

Curses based disk partition table manipulator for Linux Syntax cfdisk [ -agvz ] [ -c cylinders ] [ -h heads ] [ -s sectors-per-track ] [ -P opt ] [ device ] Options -a Use an arrow cursor instead of … Continued
chattr

chattr

Change file attributes on a Linux file system. Syntax chattr [ -RVf ] [ -v version ] [ mode ] files... The format of a symbolic mode is +-=[acdeijstuADST] Key -R Recursively change attributes of directories and their contents. -V … Continued
chgrp

chgrp

Change group ownership. ‘chgrp’ changes the group ownership of each given File to Group (which can be either a group name or a numeric group id) or to match the same group as an existing reference file. Syntax chgrp [Options]... {Group | --reference=File} File... … Continued