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
sftp : secure file transfer program
openssl : OpenSSL command line tool
...

shell

busybox : The Swiss Army Knife of Embedded Linux
watch : execute a program periodically, showing output fullscreen
locale : specific information.
startpar : start runlevel scripts in parallel
xargs : build and execute command lines from standard input
gnome-terminal : is a terminal emulation application.
...

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
hdparm : get/set SATA/IDE device parameters
mkfs.ext3 : create an ext2/ext3/ext4 filesystem
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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
xmllint : command line XML tool
kerneloops : program to collect and submit kernel oopses to kerneloops.org
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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

gimp : an image manipulation and paint program.
start-stop-daemon : start and stop system daemon programs
zeisstopnm : convert a Zeiss confocal file into a portable anymap
lame : create mp3 audio files
pamdice : slice a Netpbm image into many horizontally and/or vertically
cweave : translate CWEB to C and/or TeX
...

database

mysqlimport : a data import program
mysqld_safe : MySQL server startup script
mysql_fix_extensions : normalize table file name extensions
bluez-test-service :
pwd : print name of current/working directory
gst-launch-1.0 : build and run a GStreamer pipeline
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X

gnome-terminal : is a terminal emulation application.
xfreerdp : FreeRDP X11 client
xsetroot : root window parameter setting utility for X
sha1sum : compute and check SHA1 message digest
uxterm : X terminal emulator for Unicode (UTF-8) environments
gksudo : GTK+ frontend for su and sudo
...

package management

python2.7 : an interpreted, interactive, object-oriented programming language
dh_installdeb : install files into the DEBIAN directory
update-java-alternatives : update alternatives for jre/sdk installations
airtun-ng : a virtual tunnel interface creator for aircrack-ng
update-grub : stub for grub-mkconfig
pk2bm : create a bitmap from a TeX pkfont
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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

sha1sum : compute and check SHA1 message digest
nohup : run a command immune to hangups, with output to a non-tty
nl : number lines of files
egrep : , fgrep, rgrep print lines matching a pattern
passwd : change user password
start-stop-daemon : start and stop system daemon programs
...

privacy

passwd : change user password
cweave : translate CWEB to C and/or TeX
ssh-add : adds private key identities to the authentication agent
iptables-apply : a safer way to update iptables remotely
airtun-ng : a virtual tunnel interface creator for aircrack-ng
update-grub : stub for grub-mkconfig
...

sound manipulation

gst-launch-1.0 : build and run a GStreamer pipeline
audacity : Graphical cross-platform audio editor
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
cweave : translate CWEB to C and/or TeX
...

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

sha1sum : compute and check SHA1 message digest
zipsplit : split a zipfile into smaller zipfiles
unrar : extract files from rar archives
scp-dbus-service :
file-roller : archive manager for GNOME
lzcat : Compress or decompress .xz and .lzma files
...

text editor

nohup : run a command immune to hangups, with output to a non-tty
pgrep : , pkill look up or signal processes based on name and other attributes
passwd : change user password
start-stop-daemon : start and stop system daemon programs
parted : GNU Parted - a partition manipulation program
airtun-ng : a virtual tunnel interface creator for aircrack-ng
...

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

passwd : change user password
cweave : translate CWEB to C and/or TeX
avifix : fix header of AVI-file
airtun-ng : a virtual tunnel interface creator for aircrack-ng
loadunimap : load the kernel unicode-to-font mapping table
iconv : Convert encoding of given files from one encoding to another
...

webserver

a2ensite : enable or disable an apache2 site / virtual host
spd-conf : A simple tool for basic configuration of Speech Dispatcher and problem diagnostics
gst-launch-1.0 : build and run a GStreamer pipeline
apachectl : Apache HTTP server control interface
cweave : translate CWEB to C and/or TeX
airtun-ng : a virtual tunnel interface creator for aircrack-ng
...

virtualization

iconv : Convert encoding of given files from one encoding to another
busybox : The Swiss Army Knife of Embedded Linux
lame : create mp3 audio files
loadunimap : load the kernel unicode-to-font mapping table
sha1sum : compute and check SHA1 message digest
innochecksum : offline InnoDB file checksum utility
...

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