Linux

chmod

chmod Change access permissions, change mode. Syntax chmod [Options]... Mode [,Mode]... file... chmod [Options]... Numeric_Mode file... chmod [Options]... --reference=RFile file... Options -f, --silent, --quiet Suppress most error messages. -v, --verbose Output a diagnostic for every file processed. -c, --changes like verbose but … Continued

chown

Change owner, change the user and/or group ownership of each given File to a new Owner. Chown can also change the ownership of a file to match the user/group of an existing reference file. SYNTAX chown [Options]... NewOwner File... chown … Continued

chroot

Run a command with a different root directory ‘chroot’ runs a command with a specified root directory. On many systems, only the super-user can do this. SYNTAX chroot NEWROOT [COMMAND [ARGS]...] chroot OPTION Ordinarily, filenames are looked up starting at … Continued

chkconfig

Update and query runlevel information for system services. Syntax chkconfig --list [name] chkconfig --add name chkconfig --del name chkconfig [--level levels] name <on|off|reset> chkconfig [--level levels] name Options: --level levels The run levels an operation should pertain to. Given as … Continued

cksum

Print CRC checksum and byte counts. Computes a cyclic redundancy check (CRC) checksum for each given File, or standard input if none are given or for a File of – Syntax cksum [Option]... [File]... cksum prints the CRC checksum for each file along with … Continued

clear

Clear terminal screen =)

cmp

Compare two files, and if they differ, tells the first byte and line number where they differ. You can use the `cmp’ command to show the offsets and line numbers where two files differ. `cmp’ can also show all the … Continued

comm

Common – compare two sorted files line by line and write to standard output: the lines that are common, plus the lines that are unique. Syntax comm [options]... File1 File2 Options -1 suppress lines unique to file1 -2 suppress lines … Continued

command

Run command with arguments ignoring any shell function named command. SYNTAX command [-pVv] command [arguments ...] OPTIONS -P Use a default path -v Verbose -V More verbose Only shell builtin commands or commands found by searching the PATH are executed. If there is a shell function named ls, … Continued

continue

Resume the next iteration of an enclosing for, while, until, or select loop. SYNTAX continue [n] If n is supplied, the execution of the nth enclosing loop is resumed. n must be greater than or equal to 1. The return status is zero unless n is not greater than or equal to … Continued

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