unexpand

unexpand

Convert spaces to tabs, write the contents of each given FILE, or standard input if none are given or for a FILE of `-‘, to standard output. Strings of two or more space or tab characters are converted to as … Continued
uniq

uniq

Report or filter out repeated lines in a file. Reads standard input comparing adjacent lines, and writes a copy of each unique input line to the standard output. The second and succeeding copies of identical adjacent input lines are not … Continued
units

units

Convert units from one scale to another. The units are defined in an external data file. You can use the extensive data file that comes with this program, or you can provide your own data file to suit your needs. … Continued
unrar

unrar

Extract files from a rar archive. Syntax unrar command [-switch_1 -switch_N] archive [files...] [path...] A summary of commands is below. Every command/switch must be separated by whitespace. Commands e Extract files to current directory. l List archive content. p Print … Continued
unset

unset

Remove variable or function names Syntax unset [-fv] [name] Options -f The names refer to shell Functions, and the function definition is removed. Readonly variables and functions can not be unset. -v Each name refers to a shell Variable (default) … Continued
unshar

unshar

Unpack shell archive scripts. Each file is processed in turn, as a shell archive or a collection of shell archives. If no files are given, then standard input is processed instead. Syntax unshar [options] ... [file... ] Options -d DIRECTORY --directory=DIRECTORY Change … Continued
until

until

Execute consequent-commands as long as test-commands has an exit status which is not zero. Syntax until test-commands; do consequent-commands; done The return status is the exit status of the last command executed in consequent-commands, or zero if none was executed. This is a BASH shell … Continued
useradd

useradd

Create a new user or update default new user information . Syntax useradd [options] LOGIN useradd -D useradd -D [options] When invoked without the -D option, the useradd command creates a new user account using the values specified on the … Continued
userdel

userdel

Delete a user account and related files. Syntax userdel [options] LOGIN userdel modifies the system account files, deleting all entries that refer to the user name LOGIN. The named user must exist. Options -f, --force This option forces the removal of … Continued
usermod

usermod

Modify user account information. Syntax usermod [options] [user] Options -c comment Comment field. -d dir Home directory. -e date Account expiration date. date is in the format MM/DD/YYYY. Two-digit year fields are also accepted. The value is stored as the … Continued