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Bash Shell Temporarily Disable an Alias ≡ Menu Tutorials BASH Shell Troubleshooting Nginx Networking MySQL Google Cloud Platform Amazon Cloud Computing Rackspace Cloud Computing Linux CentOS Debian / Ubuntu Ubuntu Linux Suse RedHat and Friends Slackware Linux UNIX AIX Mac OS X FreeBSD FreeBSD Jails (VPS) Openbsd Solaris See all tutorial topics Contact us Linux Scripting Guide RSS/FEED nixCraft Linux and Unix tutorials for new and seasoned sysadmin. Bash Shell Temporarily Disable an Alias by Vivek Gite on March 13, 2009 in BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, Linux, RedHat and Friends, Suse, Troubleshooting, Ubuntu Linux, UNIX I've couple of shell aliases defined in ~/.bashrc file. How do I temporarily remove (disable) a shell alias and call the core command directly without using unalias command under a bash shell on a Linux or Unix-like systems? An alias command enables a replacement of a word with another string. It is mainly used for abbreviating a system command, or for adding default arguments to a regularly used command.It is Tutorial details also useful for creating your own commands on a Linux, OS X, FreeBSD, Difficulty Easy (rss) OpenBSD, Ubuntu/Debian/Red hat/CentOS/Fedora and Unix-like operating Root privileges No systems. Requirements None Estimated completion time 2m Display currently defined aliases Type the following command: $ alias Sample outputs: alias cp='cp -i' alias dnstop='dnstop -l 5 eth1' alias grep='grep --color' alias l.='ls -d .* --color=tty' alias ll='ls -l --color=tty' alias ls='ls --color=tty' alias mv='mv -i' alias rm='rm -i' alias update='yum update' alias updatey='yum -y update' alias vi='vim' alias vnstat='vnstat -i eth1' alias which='alias | /usr/bin/which --tty-only --read-alias --show-dot --show-tilde' alias vnstat='vnstat -i eth1' Creating an alias Create an alias called c for the commonly used clear command, which clear the screen: $ alias c='clear' Then, to clear the screen, instead of typing clear, the user would only have to type the letter c and press the [ENTER] key: $ c How do I disabled alias temporarily? An alias can be disabled temporarily and the core command get called directly. Just prefix command with a backslash. Create an alias called vnstat: $ alias vnstat='vnstat -i eth1' $ vnstat Sample output: Database updated: Fri Mar 13 15:30:01 2009 eth1 received: 158.48 GB (20.9%) transmitted: 599.82 GB (79.1%) total: 758.30 GB rx | tx | total -----------------------+------------+----------- yesterday 2.83 GB | 10.90 GB | 13.73 GB today 1.92 GB | 7.31 GB | 9.23 GB -----------------------+------------+----------- estimated 2.97 GB | 11.28 GB | 14.25 GB Now disabled vnstat alias temporarily, enter: $ \vnstat Sample output: rx / tx / total / estimated eth1: yesterday 2.83 GB / 10.90 GB / 13.73 GB today 1.92 GB / 7.31 GB / 9.23 GB / 14.24 GB eth0: yesterday 655.05 MB / 2.02 GB / 2.66 GB today 438.01 MB / 1.43 GB / 1.86 GB / 2.86 GB Another option is to type full command path: $ /usr/bin/vnstat But, how do I unalias permanently? Update your shell configuration file like ~/.bashrc and remove required alias: $ vi ~/.bashrc $ unalias nameHere $ unalias vnstat $ source ~/.bashrc Bash Shell: Ignore Clear all Linux / Aliases and Ubuntu Set User Find out if shell How do I use shell UNIX bash shell Functions When Profile Under Bash command is aliased aliases under Linux? aliases Running A… Shell or not Pass Command Line Arguments To a Bash Alias Command Tweet itFacebook itGoogle+ itPDF itFound an error/typo on this page? { 20 comments… add one } techfun March 13, 2009, 8:55 pm When you said: alias p='clear' I think you meant: alias c='clear' Reply Link nixCraft March 13, 2009, 9:04 pm Thanks for the heads up. Reply Link techfun March 13, 2009, 9:09 pm No problem, I do that kind of thing all the time myself. :) Reply Link Tim March 14, 2009, 10:48 am You can also use `command’. If you have ls aliased to `ls -lh’, command ls will run the ls command as if there was no alias. Reply Link Topper March 14, 2009, 11:24 am Also, you can see all the aliases from .bashrc or .bashcompletition or something else with # alias TAB This will list all the aliases Reply Link Michael Wagner March 14, 2009, 3:03 pm You can temporarily disable it via \ or with the full pathname of the command. Michael Reply Link Michael Wagner March 14, 2009, 3:04 pm Sorry, the output was not correct. You can put an \ before the alias. Reply Link Michael Wagner March 14, 2009, 3:06 pm Sorry, the output was not correct. You can disable it when you put a \ before the alias. Michael Reply Link Topper March 14, 2009, 7:43 pm Exactly – this was the meaning of author’s post! Did you read it ? Reply Link Michael Wagner March 14, 2009, 8:50 pm Yes I read the post but I thought it was a question not a statement. Sorry for the misunderstanding. Reply Link Aditya March 15, 2009, 6:42 am How about unaliasing? say I’ve a few aliases defined in my ~/.bashrc and ls is one of them: alias ls=’ls -alhF’ so on prompt to disable it temporarily I will say: > unalias ls and done……how about this solution? Reply Link Topper March 15, 2009, 8:45 am unalias [-a] [name …] Remove each name from the list of defined aliases I think that will be removed permanently. Reply Link Jeremy February 16, 2012, 2:14 pm yes and no. IT does remove it permanently, however, the alias is normally generated from the .bashrc or some other file that is read in during login or opening a new terminal. So technically it is not removed permanently unless the alias commands are removed from those files as well. Reply Link VoidFox June 24, 2015, 12:53 pm thanks just what i needed :> Reply Link Rory Browne March 16, 2009, 12:11 pm There seem to be some useful tips here – I usually do something like /bin/rm to avoid the rm -i alias. Of course you can always use the -f argument with cancels out -i. Another thing you could do ( if you wanted to use an unedited version of the command ) would be to start up a sub-shell. Something along the lines of…… bash unalias ls ls exit When you exit back out to the parent shell, your unalias is forgotten. Reply Link Kristian April 14, 2009, 4:24 pm Doesn’t control-L clear the screen? Reply Link nixCraft April 14, 2009, 5:54 pm This is not about clearing screen. It is about disabling aliases. Reply Link Topper April 14, 2009, 5:46 pm Yes it is ? Reply Link Jeremy February 16, 2012, 2:10 pm Although -f cancels out the -i for rm, it does not for cp. I found this page looking for a way to temporarily disable an alias because the -f isn’t working. The script will run, but the new file is not copying over the old one. During testing, I notice its because the -f I put on the command is not actually canceling out the alias which uses the -i and its still prompting for confirmation to move the file over. Reply Link nixCraft February 16, 2012, 2:31 pm Use full path or \ syntax: # skip it /bin/cp -f foo bar # OR \cp -f foo bar Reply Link Leave a Comment Name * Email * Comment Submit Next FAQ: Linux Uninstall VMWare Server Software Previous FAQ: Postfix Configure Multiple ISP Client SMTP Authentication To search, type and hit enter Featured Articles: 30 Cool Open Source Software I Discovered in 2013 30 Handy Bash Shell Aliases For Linux / Unix / Mac OS X Top 30 Nmap Command Examples For Sys/Network Admins 25 PHP Security Best Practices For Sys Admins 20 Linux System Monitoring Tools Every SysAdmin Should Know 20 Linux Server Hardening Security Tips Linux: 20 Iptables Examples For New SysAdmins Top 20 OpenSSH Server Best Security Practices Top 20 Nginx WebServer Best Security Practices 20 Examples: Make Sure Unix / Linux Configuration Files Are Free From Syntax Errors 15 Greatest Open Source Terminal Applications Of 2012 My 10 UNIX Command Line Mistakes Top 10 Open Source Web-Based Project Management Software Top 5 Email Client For Linux, Mac OS X, and Windows Users The Novice Guide To Buying A Linux Laptop … Follow +1 + 179,856 Follow @nixcraft ©2000-2015 nixCraft. 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