alias - Create your own name for a command
arch - To print machine architecture
ash - Ash command interpreter (shell)
awk - Pattern scanning and processing language
ac - User connection statistics
B
basename - Remove directory and suffix from a file name
bash - GNU Bourne-Again Shell
bsh - Command interpreter (Shell)
bc - Command line calculator
bunzip2 - Unzip .bz2 files
C
cat - Concatenate a file print it to the screen
chgrp - Change the group designation of a file
chmod - Change file permissions
chown - Change the owner of a file
cjpeg - Compress an image file to a JPEG file
clear - Clear terminal screen (command line)
comm - Compare two sorted files
cp - Copy command
cpio - Copy files to and from archives
cut - Print selected parts of lines to standard output
D
date - Display date and time
dc - Command line calculator
df - Disk space free
diff - Difference between two files
diff3 - Difference between 3 files
dig - Interrogate DNS name servers
djpeg - Decompress a JPEG file to an image file
dmesg - Print or control the kernel ring buffer (print out bootup messages)
doexec - Run an executable with an arbitrary argv
domainname- Show or set the system's NIS/YP domain name
dos2unix - Converts plain text files in DOS/MAC format to UNIX format
du - Show disk useage
dumpkeys - Write keyboard driver's translation tables to std output
E
echo - Display a line of text
ed - Line-oriented text editor
egrep - Print lines matching a pattern
elinks - A text mode WWW browser
env - Dislay the path
ex - Start Vim in ex mode
eject - Eject media from device
F
factor - Display prime factors of a number
false - Exit with a status code indicating failure
fdisk - Disk usage
fgrep - Variant of grep
find - Find a file
finger - Displays information about the system users
fixps - Try to fix common PostScript problems that break postprocessing
free - Display free memory
G
grep - Search for a pattern using regular expression
gtar - GNU version of the archiving utility tar.
gunzip - Unzip .gz files
gzip - Compress files
H
halt - Stop the system
hdparm - Get/set harddisk parameters
head - Print the first 10 lines of a file to standard output
hostname - Show or set the system's host name
history - Display entire command history
HISTSIZE - Change history size
httpd - Apache Hypertext Transfer Protocol Server
I -
identify - It describes the format and characteristics of image files.
id - Print information for username, or the current user
ifconfig - Display network and hardware addresses
igawk - Gawk with include files
ipcalc - Calculate IP information for a host
K
kbd_mode - Report or set the keyboard mode
kill - Terminate a process
L
last - Show list of last logged in users
lastlog - reports the log of all users or of a given user
link - Call the link function to create a link to a file
links - See elinks
ln - Create a link to the specified TARGET with optional LINK_NAME
loadkeys - Load keyboard translation tables
locate - Displays the location of the file
login - Sign in
look - Displays any lines in file which contain "string" as a prefix.
ls - List directory contents
lsmod - List loaded kernel modules
lynx - Command to start the Lynx browser
M
mac2unix - Converts plain text files in DOS/MAC format to UNIX format
mail - A mail processing system, which has a command syntax like ed
man - Display a particular manual entry
manweb - Manweb is part of the Netpbm package
mdu - Display the amount of space occupied by an MSDOS directory
mkdir - Create a directory
mkfs - Make a filesystem on a drive
mknod - Make block or character special files
mktemp - Make temporary filename (unique)
more - Page through text one screenful at a time.
mount - Mount a filesystem/device
mt - Control magnetic tape drive operation
mv - Move and / or rename files
N
namei - Follow a pathname until a terminal point is found
nano - An enhanced free Pico clone
nc - arbitrary TCP and UDP connections and listens
ncftp - Browser program for the File Transfer Protocol
nedit-nc - nedit-nc is the client interface to the NEdit text editor
netstat - Display verbose info about network processes and ports
nice - Run a command with modified priority
nslookup - query internet domain name servers
nisdomainname - Show or set system's NIS/YP domain name
P
paste - Merge lines of files
pdf2dsc - Generate a PostScript page list of a PDF document
pdf2ps - Convert PDF file "input.pdf" to PostScript(tm) in "output.ps"
pdfinfo - Print contents of the 'Info' dictionary (plus some other useful information) from a PDF file
pdftotext - Convert pdf files to plain text
perl - Practical Extraction and Report Language
pgawk - The profiling version of gawk
pico - Text editor that comes with Pine (from the University of Washington)
pine - Email program used by The University of Washington
ping6 - Ping
ping - Send ICMP ECHO_REQUEST to network hosts
pinky - A lightweight 'finger' program;
pr - Format for printing
ps - Processes running
ps2ascii - Ghostscript translator from PostScript or PDF to ASCII
ps2epsi - Generate conforming Encapsulated PostScript
ps2frag - Obsolete shell script for the PSfrag system
ps2pdf12 - Convert PostScript to PDF 1.2 (Acrobat 3 and later compatible) using ghostscript
ps2pdf13 - Convert PostScript to PDF 1.3 (Acrobat 4 and later compatible) using ghostscript
ps2pdf14 - Use ps2pdfwr: Convert PostScript to PDF without specifying Compatibility Level, using ghostscript
ps2pdf - Convert PostScript to PDF using ghostscript
ps2pdfwr - Convert PostScript to PDF without specifying Compatibility Level, using ghostscript
ps2pk - Creates a TeX pkfont from a type1 PostScript font
ps2ps - ps2ps uses gs to convert PostScript(tm) file "input.ps" to simpler and (usually) faster PostScript in "output.ps"
psbook - Rearranges pages from a PostScript document into "signatures" for printing books or booklets
pwd - Print Working Directory
Q
quota - Display disk usage and limits
R
resize - Xterm window size
readelf - Displays information about ELF files
reboot - Stop the system, poweroff, reboot
red - red is a restricted ed: it can only edit files in the current directory and cannot execute shell commands
rename - Rename files
rmdir - Remove a directory
rm - Remove files or directories
rpm - rpm command options
rundig - Sample script to create a search database for ht://Dig
rview - The GUI version of Vim in easy mode with restrictions
rvi - Vi / Vim editor
S
sed - Stream editor
setfont - Load EGA/VGA console screen font
sfdisk - Modified fdisk program
sftp - Secure file transfer protocol (ftp)
sh - Shell (BASH)
shred - Safely remove data from disk drive
sleep - Delay for a specified amount of time
slocate - Security Enhanced version of the GNU Locate
sort - Sort lines of a text file
ssh - Secure shell connection command
stty - change and print terminal line settings
su - switch user
switchdesk- Graphical and text mode interface for choosing desktop environment
sync - flush the file system buffers
ssh - Secure shell connection command
T
tail - Print the last 10 Lines of a file standard output
tar - Create an Archive
tcsh - Enhanced completely compatible version of the Berkeley UNIX C shell, csh
tee - Copy standard input to each file, and also to standard output
telnet - User interface to the telnet protocol
time - Run the specified program command with the given arguments
touch - Creating empty files
tracepath6- See tracepath
tracepath - Trace path to a network host discovering MTU along this path
traceroute6-See traceroute
traceroute- Print the route packets take to network host
tree - Display file tree
true - Exit with a status code indicating success
tty - Print the current terminal
U
umask - File creation mask
umount - Detache file system(s) mentioned from file hierarchy
uname - Print system information ( kernel version )
unicode_start- Put keyboard and console into Unicode (UTF-8) mode
unicode_stop - Undo the effect of unicode_start
unlink - Call the unlink function to remove the specified file
uniq - Remove duplicate lines from sorted file
updatedb - Update the slocate database
untar - Unarchive a file
unzip - Unzip .zip files
useradd - Add a new user
users - Output who is currently logged in according to system records
usleep - Sleep a given number of microseconds. default is 1
V
view - Start vim in read-only mode
vi - Start the vi editor
vim - Start the vim editor
vigr - Edit the password or group files
visudo - edit the sudoers file
W
w - who is logged on and what they are doing
wc - Word count of a file
wget - Non-interactive download of files from the Web
whatis - Search the whatis database for complete words (command names)
whereis - Locate a command or file
which - Find command path
whoami - Print effective userid
who - show who is logged on
whois - Client for the whois service
X
xinit - Start Xserver
xpdf - Portable Document Format (PDF) file viewer for X windows
xwd - dump an image of an X window
xrandr - Change resolution running Xwindows ( command line )
Xvfb - Virtual framebuffer X server for X Version 11
Xorg - X11R6 X server
Y
ypdomainname - Show or set the system's NIS/YP domain name
yum - Yellowdog Updater Modified
ypbind - Nis binding process
ypserv - Nis Server
Z
zcat - Compress or expand files
zip - Compression and file packaging utility
zdump - Time zone dumper
zenmap - Graphical Nmap frontend and results viewer
zipinfo - List detailed information about a ZIP archive
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