Linux Commands Examples

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network

netcat : NC(1) BSD General Commands Manual NC(1) nc — arbitrary TCP and UDP connections and listens
ping : 6 send ICMP ECHO_REQUEST to network hosts
nmcli : – commandline tool for controlling NetworkManager
telnet : user interface to the TELNET protocol
openssl : OpenSSL command line tool
sftp : secure file transfer program
...

shell

busybox : The Swiss Army Knife of Embedded Linux
usermod : modify a user account
which : locate a command
fusermount : mount and unmount FUSE filesystems
watch : execute a program periodically, showing output fullscreen
locale : specific information.
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filesystem

resize2fs : ext2/ext3/ext4 file system resizer
passwd : change user password
fsck : check and repair a Linux filesystem
chown : change file owner and group
rename : renames multiple files
aireplay-ng : inject packets into a wireless network to generate traffic
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programming

strace : trace system calls and signals
MAKEDEV : create devices
busybox : The Swiss Army Knife of Embedded Linux
startpar : start runlevel scripts in parallel
time : run programs and summarize system resource usage
insmod : Simple program to insert a module into the Linux Kernel
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file

mkfs.ext2 : create an ext2/ext3/ext4 filesystem
egrep : , fgrep, rgrep print lines matching a pattern
hexdump : , hd ASCII, decimal, hexadecimal, octal dump
passwd : change user password
su : change user ID or become superuser
diff : compare files line by line
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graphic manipulation

start-stop-daemon : start and stop system daemon programs
gimp : an image manipulation and paint program.
loadunimap : load the kernel unicode-to-font mapping table
dkms : Dynamic Kernel Module Support
bmptoppm : convert a BMP file into a portable anymap
pamoil : turn a PAM image into an oil painting
...

database

mysqlimport : a data import program
mysqld_safe : MySQL server startup script
dialog : display dialog boxes from shell scripts
pm-powersave : Put your computer into low power mode
ping : 6 send ICMP ECHO_REQUEST to network hosts
MAKEDEV : create devices
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X

xfreerdp : FreeRDP X11 client
gnome-terminal : is a terminal emulation application.
file-roller : archive manager for GNOME
bluez-test-discovery :
setxkbmap : set the keyboard using the X Keyboard Extension
airtun-ng : a virtual tunnel interface creator for aircrack-ng
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package management

dpkg-deb : Debian package archive (.deb) manipulation tool
dpkg-maintscript-helper : works around known dpkg limitations in maintainer scripts
sha1sum : compute and check SHA1 message digest
make : GNU make utility to maintain groups of programs
dpkg-reconfigure : reconfigure an already installed package
apt-config : APT Configuration Query program
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printer

ppdc : cups ppd compiler
ghostscript : Ghostscript (PostScript and PDF language interpreter and previewer)
iconv : Convert encoding of given files from one encoding to another
2to3-3.2 : Python2 to Python3 converter
mktexpk : create a PK file for a font
ncal : displays a calendar and the date of Easter
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text manipulation

bluez-simple-service :
unwrapdiff : demangle word-wrapped patches
fmtutil-sys : utility for maintaining TeX format files system-wide
ping : 6 send ICMP ECHO_REQUEST to network hosts
loadunimap : load the kernel unicode-to-font mapping table
awk : pattern scanning and processing language
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privacy

passwd : change user password
wpa_passphrase : Generate a WPA PSK from an ASCII passphrase for a SSID
gpgsplit : Split an OpenPGP message into packets
sha1sum : compute and check SHA1 message digest
nohup : run a command immune to hangups, with output to a non-tty
tor-resolve : resolve a hostname to an IP address via tor
...

sound manipulation

audacity : Graphical cross-platform audio editor
gst-launch-1.0 : build and run a GStreamer pipeline
jack_evmon :
lame : create mp3 audio files
start-stop-daemon : start and stop system daemon programs
ogmsplit : Split OGG/OGM files into several smaller OGG/OGM files
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Access Control List

su : change user ID or become superuser
usermod : modify a user account
login : begin session on the system
passwd : change user password
MAKEDEV : create devices
update-grub : stub for grub-mkconfig
...

file compression

filterdiff : extract or exclude diffs from a diff file
p7zip : Wrapper on 7zr, a 7-zip file archiver with high compression ratio
lame : create mp3 audio files
update-grub : stub for grub-mkconfig
7zr : A file archiver with highest compression ratio
iconv : Convert encoding of given files from one encoding to another
...

text editor

kerneloops : program to collect and submit kernel oopses to kerneloops.org
update-grub : stub for grub-mkconfig
gedit : text editor for the GNOME Desktop
sha1sum : compute and check SHA1 message digest
view : Vi IMproved, a programmers text editor
bibtex.original : make a bibliography for (La)TeX
...

boot settings

grub-mkimage : make a bootable image of GRUB
passwd : change user password
spd-conf : A simple tool for basic configuration of Speech Dispatcher and problem diagnostics
update-grub : stub for grub-mkconfig
syslinux : install the SYSLINUX bootloader on a FAT filesystem
iconv : Convert encoding of given files from one encoding to another
...

font

ofm2opl : convert Omega and TeX font-metric files to property-list files
passwd : change user password
cweave : translate CWEB to C and/or TeX
mft : translate Metafont or MetaPost code to TeX code for prettyprinting
airtun-ng : a virtual tunnel interface creator for aircrack-ng
update-grub : stub for grub-mkconfig
...

mail

mimeopen : Open files by mimetype
spd-conf : A simple tool for basic configuration of Speech Dispatcher and problem diagnostics
nohup : run a command immune to hangups, with output to a non-tty
ping : 6 send ICMP ECHO_REQUEST to network hosts
start-stop-daemon : start and stop system daemon programs
avconv : avconv video converter
...

Media Player

pdb3.3 : the Python debugger
iconv : Convert encoding of given files from one encoding to another
python2.7 : an interpreted, interactive, object-oriented programming language
lame : create mp3 audio files
start-stop-daemon : start and stop system daemon programs
amarok : The audio player for KDE
...

webserver

a2ensite : enable or disable an apache2 site / virtual host
lame : create mp3 audio files
loadunimap : load the kernel unicode-to-font mapping table
pdb3.3 : the Python debugger
sha1sum : compute and check SHA1 message digest
nohup : run a command immune to hangups, with output to a non-tty
...

virtualization

sha1sum : compute and check SHA1 message digest
innochecksum : offline InnoDB file checksum utility
ping : 6 send ICMP ECHO_REQUEST to network hosts
start-stop-daemon : start and stop system daemon programs
VBoxControl : x86 virtualization solution
spd-conf : A simple tool for basic configuration of Speech Dispatcher and problem diagnostics
...

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