Questions tagged [alias]

An alias is essentially nothing more than a keyboard shortcut, an abbreviation, a means of avoiding typing a long command sequence. This can save a great deal of typing at the command-line and avoid having to remember complex combinations of commands and options.

349
votes
14answers
57k views

In Bash, when to alias, when to script, and when to write a function?

It's taken me almost 10 years of Linux usage to ask this question. It was all trial and error and random late-night internet surfing. But people shouldn't need 10 years for this. If I were just ...
60
votes
5answers
40k views

How to pass parameters to an alias?

For bash script, I can use "$@" to access arguments. What's the equivalent when I use an alias?
119
votes
35answers
56k views

Quick directory navigation in the bash shell

I would like to frequently switch between directories that are in totally unrelated paths, for example /Project/Warnest/docs/ and ~/Dropbox/Projects/ds/test/. But I don't want to type cd /[full-path]/...
75
votes
6answers
24k views

How to use `which` on an aliased command?

Like most users, I have a bunch of aliases set up to give a default set of flags for frequently used programs. For instance, alias vim='vim -X' alias grep='grep -E' alias ls='ls -G' The problem is ...
253
votes
19answers
176k views

How to have tail -f show colored output

I'd like to be able to tail the output of a server log file that has messages like: INFO SEVERE etc, and if it's SEVERE, show the line in red; if it's INFO, in green. What kind of alias can I setup ...
204
votes
5answers
156k views

Why doesn't my Bash script recognize aliases?

In my ~/.bashrc file reside two definitions: commandA, which is an alias to a longer path commandB, which is an alias to a Bash script I want to process the same file with these two commands, so I ...
159
votes
6answers
32k views

Run a command that is shadowed by an alias

Let's say I have the following alias in bash - alias ls='ls --color=auto' - and I want to call ordinary ls without options. Is the only way to do that is to unalias, do the command and then alias ...
49
votes
5answers
24k views

How can I `alias sudo !!`?

I'm trying to set an alias for sudo !! in Bash. I tried alias sbb='sudo !!', but it interprets that as a literal !! and prints sudo: !!: command not found If I use double quotes, it substitutes ...
21
votes
4answers
9k views

Why does sudo ignore aliases?

I am running Ubuntu 10.04 and I use upstart for daemon management. My enterprise application is run as a daemon and must be run as root because of various privileges. E.g.: sudo start my-...
2
votes
3answers
964 views

Why doesn't my command work when aliased?

I use ps -ef | grep catalina | grep -v grep to print the tomcat process running on the system: kshitiz 7099 1 0 May11 ? 00:02:29 /usr/lib/jvm/jdk1.8.0/bin/java -agentlib:jdwp=transport=...
50
votes
4answers
17k views

How do I get bash completion for command aliases?

I am looking to get tab-completion on my command line aliases, for example, say I defined the following alias : alias apt-inst='sudo aptitude install' Is there a way to get the completions provided ...
11
votes
4answers
2k views

Forcing an 'added' alias to every command

Is it possible to forcibly add a timing alias (for lack of a better way to phrase it) to every command in bash? For example, I would like to have a specific user who whenever a command is run, it is ...
13
votes
2answers
14k views

Alias and functions

From the bash manual The rules concerning the definition and use of aliases are somewhat confusing. Bash always reads at least one complete line of input before executing any of the commands on ...
3
votes
1answer
4k views

Is it possible to use a parameter within an alias command [duplicate]

Possible Duplicate: How to pass parameters to an alias? As answered in Can less retain colored output? I want to use git diff --color=always filename | less -r to get a colored output of my git ...
35
votes
1answer
8k views

Aliases vs functions vs scripts

This site says, "Shell functions are faster [than aliases]. Aliases are looked up after functions and thus resolving is slower. While aliases are easier to understand, shell functions are preferred ...
37
votes
4answers
22k views

How can I find a rogue alias declaration?

I'm trying to find where a specific alias has been declared. I've searched all the usual places I know to look for aliases: ~/.bashrc ~/.bash_profile /etc/bashrc /etc/profile With no luck. I know ...
24
votes
3answers
28k views

l, ls & la — what are the differences, and are there more of these commands?

So, through typing several commands I've found that there's not only ls, but l and la too. There doesn't appear to be any man entries on Ubuntu 12.14. They all appear to do similar things with minor ...
16
votes
5answers
10k views

How to set an alias on a per-directory basis?

Suppose you have an alias go, but want it to do different things in different directories? In one directory it should run cmd1, but in another directory it should run cmd2 By the way, I have an ...
5
votes
5answers
2k views

What are commands to find shell keywords, built in functions and user defined functions?

I was discussing with my friend on how the commands are parsed in the shell, and he told me that bash searches the command in following order List of aliases List of shell keywords List of ...
25
votes
15answers
5k views

What customizations have you done on your shell profile to increase productivity?

I know some people have some startup scripts and some people personalise the prompt. One developer uses short aliases for the long path he often visits and the frequent commands he runs. What are all ...
26
votes
6answers
15k views

How can I create an alias for a git [action] command (which includes spaces)?

Most of my my aliases are of this form: alias p='pwd' I want to alias git commit so that it does git commit -v But trying to create an alias with a space gives an error: $ alias 'git commit'='git ...
11
votes
5answers
2k views

Have xargs use alias instead of binary

Bash 4.2 on CentOS 6.5: In my ~/.bash_profile I have a bunch of aliases, including: alias grep='grep -n --color=always' so that I can get color highlighting and print line numbers automatically ...
17
votes
3answers
9k views

How do I temporarily bypass an alias in tcsh?

I am using tcsh. bash and zsh and other suggestions won't help here. I have several aliases that are named the same thing as another command, so if I did unalias it, typing the same thing would now ...
8
votes
4answers
17k views

How to set an alias for a specific file or directory?

There are several files I work with often. For instance some configuration files or log files. Let's say the Apache log file. I often want to tail or grep it. Instead of writing: tail -50 /var/log/...
4
votes
2answers
2k views

Resolve nested aliases to their source commands

I've made several aliases for my convenience.But now I need to be helpful by sending a useful command and it is full of aliases.I've tried doing type u but all it returns is up && ap upgrade ...
2
votes
3answers
2k views

How to make an alias permanent?

I have created an alias: alias shh='sqlplus hfdora/hfdora@hfd1" After creating this alias I was able to enter my database only by typing shh. But after closing my shell, I wasn't able to find the ...
41
votes
10answers
62k views

Show only hidden files (dot files) in ls alias

I'm using the command ls -a | grep '^\.' for showing only the hidden files. I added the line alias hidden='ls -a | grep '^\.'' # show only hidden files to .bash_aliases file but this does not ...
55
votes
2answers
13k views

watch command alias expansion

If a run the watch command containing an alias, it will not expand the alias. I have tried both with single quote and double quotes, in fact given the following alias: # alias ll alias ll='ls -l --...
12
votes
3answers
5k views

Resolve all aliases in a zsh command line

I have nested aliases and I want to resolve all of them before executing the command. How do I do that? If there is a function that is not bound to any keys then M-x foobar is fine for me too. I ...
21
votes
4answers
19k views

How can I tell what command an alias stands for?

ll is a common alias in many Linux distros. How can I tell what it aliases to? I've tried checking my .bashrc, but I am not able tell what ll is equivalent to.
3
votes
1answer
696 views

Getting sudo to work for an alias

I installed Sublime Text 3 in Fedora 20 which has got GNOME, as I couldn't get it being called from terminal I created a .bash_aliases file which a line like this: alias sublime='sublime_text' And ...
11
votes
3answers
1k views

How to extend bash aliases

How to create an alias that actually extends another alias of the same name in Bash? Why: I used to have GREP_OPTIONS set on .bashrc to something like this: GREP_OPTIONS="-I --exclude=\*~" I also ...
7
votes
4answers
5k views

How to create a short path?

We have so many useful folders, which are in different path, for our working in Linux. For example : $ cd ~/Documents/Courses/EDX/physics2013/ $ cd ~/Documents/Company/OpenGL/Proj/... $ cd ~/...
5
votes
4answers
19k views

Assigning a command to variable

I assign command ls to my variable my_File but when I run it as $my_File it does not work. Can you please explain why? #!/bin/bash my_File='ls -f | grep -v '\/'' $my_File
5
votes
1answer
188 views

How can I create an alias that passes additional arguments?

I have an executable that I use often: /dir1/dir2/dir3/dir4/executable argv[1] argv[2] argv[3] I know that I can set an alias for the executable: alias myexecutable = '/dir1/dir2/dir3/dir4/...
3
votes
1answer
5k views

creating abbreviations for commonly used paths

I was wondering whether it is possible to create abbreviations that can be used in terminal. I know about alias command, but am not sure whether that can be used for what I am looking for. Example: ...
3
votes
1answer
3k views

How to create an alias for two Git commands that use a parameter? [duplicate]

I regularly have to delete a local and remote Git branch. Therefore, I run the following commands: $ git branch -d feature-branch $ git push --delete origin feature-branch Since I mostly execute ...
0
votes
1answer
66 views

Call `type` on a command that's self-aliased

Sometimes a command is aliased to itself. For example: $ type ls ls is aliased to `ls -al' How do I invoke type on the ls command itself (and not the alias)?
19
votes
6answers
4k views

Why is aliasing over standard commands not recommended?

For example, a common alias I've seen in the ~/.bashrc file (or equivalents) is alias rm='rm -i' However, I've seen people recommend against this because the alias might not exist on another system ...
9
votes
1answer
516 views

bashrc lazy substitution

How does one get ~/.bashrc aliases to evaluate $() substitutions at run time, instead of at the time that ~/.bashrc is executed (when opening a terminal)? I run this command often enough that I would ...
9
votes
2answers
269 views

New alias not available after ;

Up to now I thought that a semicolon in the shell has (somehow) the same meaning as a line break. So I was surprised that for alias <name>=<replacement text>; <name> <name> ...
6
votes
1answer
964 views

What are the side effects of having several UNIX users share one UID?

The sys-apps/shadow package on my GNU / Linux system comes with a useradd command that supports an option that I have previously overlooked: --non-unique. For the sake of convenience when shellig home ...
4
votes
1answer
3k views

How to save an alias of an eval $(other_comand) command

I've been using docker for a while and there's a command I write each time I boot up my docker: eval $(docker-machine env) I know eval shouldn't be used unless necessary, but it's mentioned by the ...
3
votes
3answers
703 views

Are there any utilities to quickly add, list and remove command aliases?

I'd like to be able to quickly, on-the-fly add (and list/remove) command aliases so that they persist between shell restarts (as if they were added to .bashrc). Are there any ready utilities/scripts/...
3
votes
1answer
2k views

GNOME 3.14+ launch new gnome-terminal and set title

To the disappointment of many, tab/window title can't be set anymore with --title I use bash. I have had a few aliases I have used to connect to remote servers with. alias c:prod='gnome-terminal --...
2
votes
2answers
854 views

Trying to make aliases that open the last modified file

One thing that I frequently do is edit the most recently modified files, so instead of typing "ls -lr" and then "vim lastfile", I thought I would make some shortcuts in my ~/.bash_profile file: alias ...
2
votes
1answer
626 views

Create a recycle bin feature without using functions

I am working on an old linux learning project and one of the tasks is as outlined below: "Create an alias that protects files from permanent deletion my moving them to a directory called .Trash. ...
1
vote
2answers
600 views

alias for a command using !! to recall the last command [duplicate]

This is a follow-up question to Execute a line of commands with one sudo If you want to redo the same command with sudo !! after doing a command like this: echo "something">/path/file You can ...
1
vote
1answer
55 views

Returning last-written file, containing particular sub-string in file name?

Whilst monitoring logging I have to go to my log files, order by written date, so I can then see the name of the log file for the most-recent execution of my application. Is there any way, given a ...
0
votes
1answer
124 views

Syntax of bash alias definition

I'm using Cygwin, and have installed all the developer packages as well as most if not all of the other packages. When I provide an alias for gcc, I get the error -bash: alias: gcc: not found What ...