Working with linux command line part 3 of 3

Common Linux Commands

• awk - Pattern scanning and processing language

• bash - GNU Bourne-Again Shell

• biff - Be notified when mail arrives (currently not installed)

• cat - Concatenate files and print on the standard output

• cd - Change directory

• chage - Change user password expiry information

• chgrp - Change group ownership

• chmod - change file access permissions

• chown - change file owner and group

• chroot - run command or interactive shell with special root directory

• chsh - change login shell

• clear - clear the terminal screen

• cp - copy files and directoriesman

• crontab - maintain crontab files for individual users

• cut - remove sections from each line of files

• date - print or set the system date and time

• dd - convert and copy a file

• df - report file system disk space usage

• diff - compare files line by line

• dig - DNS look up utility

• dmesg - print or control the kernel ring buffer

• dnsdomainname - show the system’s DNS domain name

• echo - display a line of text

• env - run a program in a modified environment

• false - do nothing, unsuccessfully

• fdisk - partition table manipulator for linux (be careful when you use it)

• find - search for files in a directory hierarchy

• free - display amount of free and used memory in the system

• ftp - internet file transfer program

• fuser - identify processes using files or sockets

• gcc - GNU project C and C++ compiler

• grep - grep, egrep, fgrep, rgrep – print lines matching a pattern

• groupadd – create a new group

• groupdel - delete a group

• groupmod - modify a group definition on the system

• groups - print the groups a user is in

• gunzip - gzip, gunzip, zcat – compress or expand files

• host - DNS look up utility

• hostname - show or set the system’s host name

• id - print user identity

• ifconfig - configure a network interface

• info - read info document

• finger – locate the binary, source, and manual page files for a command

• kill - send a signal to a process

• last - last, lastb – show listing of last logged in users

• lastlog - lastlog - reports the most recent login of all users or of a given user

• ln - make links between files

• ls - list directory contents

• man - an interface to the on-line reference manuals

• mesg - control write access to your terminal

• mkdir - make directories

• more - paging through text one screenful at a time

• mount - mount a file system

• mtr - a network diagnostic tool

• mv - move (rename) files

• netcat - TCP/IP swiss army knife

• netstat – Print network connections, routing tables, interface statistics, masquerade connections, and multicast memberships

• nice - run a program with modified scheduling priority

• nslookup - query Internet name servers interactively

• passwd - change user password

• ping - send ICMP ECHO_REQUEST to network hosts

• ps - report a snapshot the current processes

• pwd - print name of current/working directory

• rm - remove files or directories

• rmdir - remove empty directories

• route - show / manipulate the IP routing table

• sed - stream editor for filtering and transforming text

• shutdown - bring the system down

• sleep - delay for a specified amount of time

• sort - sort lines of text files

• ssh - OpenSSH SSH client (remote login program)

• strace - trace system calls and signals

• strings - print the strings of printable characters in files

• su - change user ID or become super-user

• tail - output the last part of files

• tar - The GNU version of the tar archiving utility

• telnet - user interface to the TELNET protocol

• time - run programs and summarize system resource usage

• true -do nothing, successfully

• umount - unmount file systems

• uname - print system information

• useradd - create a new user or update default new user information

• userdel - delete a user account and related files

• uptime - Tell how long the system has been running

• vi - a programmers text editor

• vim - Vi IMproved, a programmers text editor

• w - Show who is logged on and what they are doing

• wc - print the number of newlines, words, and bytes in files

• whatis - display manual page description

• whereis - locate the binary, source, and manual page files for a command

• which - locate a command

• who - show who is logged on

• whoami - print effective user id

• write - send a message to another user

 

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