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
watch : execute a program periodically, showing output fullscreen
which : locate a command
gnome-terminal : is a terminal emulation application.
startpar : start runlevel scripts in parallel
usermod : modify a user account
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filesystem

resize2fs : ext2/ext3/ext4 file system resizer
chown : change file owner and group
fsck.ext4 : check a Linux ext2/ext3/ext4 file system
rename : renames multiple files
fsck : check and repair a Linux filesystem
passwd : change user password
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programming

strace : trace system calls and signals
MAKEDEV : create devices
startpar : start runlevel scripts in parallel
busybox : The Swiss Army Knife of Embedded Linux
pdb2.7 : the Python debugger
chcon : change file security context
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file

su : change user ID or become superuser
egrep : , fgrep, rgrep print lines matching a pattern
mkfs.ext2 : create an ext2/ext3/ext4 filesystem
hexdump : , hd ASCII, decimal, hexadecimal, octal dump
passwd : change user password
shasum : Print or Check SHA Checksums
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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
tiff2ps : convert a TIFF image to PostScript™
pamdice : slice a Netpbm image into many horizontally and/or vertically
MAKEDEV : create devices
...

database

mysqlimport : a data import program
mysqld_safe : MySQL server startup script
nohup : run a command immune to hangups, with output to a non-tty
telnet : user interface to the TELNET protocol
avconv : avconv video converter
pwd : print name of current/working directory
...

X

xfreerdp : FreeRDP X11 client
gnome-terminal : is a terminal emulation application.
bibtex : make a bibliography for (La)TeX
setxkbmap : set the keyboard using the X Keyboard Extension
update-grub : stub for grub-mkconfig
xsetpointer : set an X Input device as the main pointer
...

package management

nohup : run a command immune to hangups, with output to a non-tty
update-java-alternatives : update alternatives for jre/sdk installations
loadunimap : load the kernel unicode-to-font mapping table
dvdrip : GUI for copying DVDs
iconv : Convert encoding of given files from one encoding to another
dpkg-trigger : a package trigger utility
...

printer

ghostscript : Ghostscript (PostScript and PDF language interpreter and previewer)
2to3-3.2 : Python2 to Python3 converter
foomatic-datafile : Generate a PPD file for a given printer/driver combo
lpadmin : configure cups printers and classes
dvdrip : GUI for copying DVDs
sha1sum : compute and check SHA1 message digest
...

text manipulation

nohup : run a command immune to hangups, with output to a non-tty
fmtutil-sys : utility for maintaining TeX format files system-wide
start-stop-daemon : start and stop system daemon programs
dvdrip : GUI for copying DVDs
airtun-ng : a virtual tunnel interface creator for aircrack-ng
nl : number lines of files
...

privacy

gzexe : compress executable files in place
iptables-apply : a safer way to update iptables remotely
avconv : avconv video converter
passwd : change user password
loadunimap : load the kernel unicode-to-font mapping table
iconv : Convert encoding of given files from one encoding to another
...

sound manipulation

gst-launch-1.0 : build and run a GStreamer pipeline
audacity : Graphical cross-platform audio editor
airtun-ng : a virtual tunnel interface creator for aircrack-ng
jack_samplerate : JACK toolkit client to print current samplerate
update-grub : stub for grub-mkconfig
iconv : Convert encoding of given files from one encoding to another
...

file compression

sha1sum : compute and check SHA1 message digest
znew : recompress .Z files to .gz files
dvdrip : GUI for copying DVDs
zipsplit : split a zipfile into smaller zipfiles
scp-dbus-service :
airtun-ng : a virtual tunnel interface creator for aircrack-ng
...

Access Control List

su : change user ID or become superuser
nohup : run a command immune to hangups, with output to a non-tty
loadunimap : load the kernel unicode-to-font mapping table
cweave : translate CWEB to C and/or TeX
spd-conf : A simple tool for basic configuration of Speech Dispatcher and problem diagnostics
2to3-3.2 : Python2 to Python3 converter
...

text editor

fmtutil-sys : utility for maintaining TeX format files system-wide
cpp : The C Preprocessor
update-grub : stub for grub-mkconfig
sha1sum : compute and check SHA1 message digest
gedit : text editor for the GNOME Desktop
view : Vi IMproved, a programmers text editor
...

font

afm2tfm : convert Adobe font metrics to TeX font metrics
nohup : run a command immune to hangups, with output to a non-tty
start-stop-daemon : start and stop system daemon programs
spd-conf : A simple tool for basic configuration of Speech Dispatcher and problem diagnostics
iwlist : Get more detailed wireless information from a wireless interface
debugfs : ext2/ext3/ext4 file system debugger
...

boot settings

gst-launch-1.0 : build and run a GStreamer pipeline
start-stop-daemon : start and stop system daemon programs
showkey : examine the codes sent by the keyboard
dbus-send : Send a message to a message bus
cweave : translate CWEB to C and/or TeX
spd-conf : A simple tool for basic configuration of Speech Dispatcher and problem diagnostics
...

Media Player

avifix : fix header of AVI-file
loadunimap : load the kernel unicode-to-font mapping table
iconv : Convert encoding of given files from one encoding to another
python2.7 : an interpreted, interactive, object-oriented programming language
start-stop-daemon : start and stop system daemon programs
sha1sum : compute and check SHA1 message digest
...

mail

find : search for files in a directory hierarchy
update-grub : stub for grub-mkconfig
sha1sum : compute and check SHA1 message digest
logrotate : rotates, compresses, and mails system logs
loadunimap : load the kernel unicode-to-font mapping table
spd-conf : A simple tool for basic configuration of Speech Dispatcher and problem diagnostics
...

virtualization

busybox : The Swiss Army Knife of Embedded Linux
loadunimap : load the kernel unicode-to-font mapping table
sha1sum : compute and check SHA1 message digest
innochecksum : offline InnoDB file checksum utility
start-stop-daemon : start and stop system daemon programs
spd-conf : A simple tool for basic configuration of Speech Dispatcher and problem diagnostics
...

webserver

a2ensite : enable or disable an apache2 site / virtual host
gst-launch-1.0 : build and run a GStreamer pipeline
cweave : translate CWEB to C and/or TeX
airtun-ng : a virtual tunnel interface creator for aircrack-ng
update-grub : stub for grub-mkconfig
iconv : Convert encoding of given files from one encoding to another
...

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