Linux Commands – A

Command Description
accept
Accept or Reject jobs to a destination, such as a printer.

access
Check a user’s RWX permission for a file.

aclocal
GNU autoconf too

aconnect
ALSA sequencer connection manager.

acpi
Show information about the Advanced Configuration and Power Interface.

acpi_available
Check if ACPI functionality exists on the system.

acpid
Informs user-space programs about ACPI events.

addr2line
Used to convert addresses into file names and line numbers.

addresses
Formats for internet mail addresses.

agetty
An alternative Linux Getty

alias
Create an alias for Linux commands

alsactl
Access advanced controls for ALSA soundcard driver.

amidi
Perform read/write operation for ALSA RawMIDI ports.

amixer
Access CLI-based mixer for ALSA soundcard driver.

anacron
Used to run commands periodically.

aplay
Sound recorder and player for CLI.

aplaymidi
CLI utility used to play MIDI files.

apm
Show Advanced Power Management (APM) hardware info on older systems.

apmd
Used to handle events reported by APM BIOS drivers.

apropos
Shows the list of all man pages containing a specific keyword

apt
Advanced Package Tool, a package management system for Debian and derivatives.

apt-get
Command-line utility to install/remove/update packages based on APT system.

aptitude
Another utility to add/remove/upgrade packages based on the APT system.

ar
A utility to create/modify/extract from archives.

arch
Display print machine hardware name.

arecord
Just like aplay, it’s a sound recorder and player for ALSA soundcard driver.

arecordmidi
Record standard MIDI files.

arp
Used to make changes to the system’s ARP cache

as
A portable GNU assembler.

aspell
An interactive spell checker utility.

at
Used to schedule command execution at specified date & time, reading commands from an input file.

atd
Used to execute jobs queued by the at command.

atq
List a user’s pending jobs for the at command.

atrm
Delete jobs queued by the at command.

audiosend
Used to send an audio recording as an email.

aumix
An audio mixer utility.

autoconf
Generate configuration scripts from a TEMPLATE-FILE and send the output to standard output.

autoheader
Create a template header for configure.

automake
Creates GNU standards-compliant Makefiles from template files

autoreconf
Update generated configuration files.

autoscan
Generate a preliminary configure.in

autoupdate
Update a configure.in file to newer autoconf.

awk
Used to find and replace text in a file(s).

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