Comments on: Shell Shortcuts http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/ Enhancing your Ubuntu experience! Thu, 02 Feb 2012 10:29:43 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Erik http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3532 Erik Wed, 23 Jan 2008 19:12:48 +0000 http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3532 Closely allied to !$ is !*, which bash expands into all of the previous command's arguments. Suppose you use the command `ls a b c d e`, and following that, you wanted to do a `rm b`. That's accomplished with `rm !:2`. The !: construct lets you sniper out specific arguments from a previous command, numbered like argv[] items. Going further with the example, can even say `rm !:2-4`, which expands to `rm b c d`. Check out section 9.3.2 in the bash manual for more on "Word Designators". Closely allied to !$ is !*, which bash expands into all of the previous command’s arguments.

Suppose you use the command `ls a b c d e`, and following that, you wanted to do a `rm b`.

That’s accomplished with `rm !:2`. The !: construct lets you sniper out specific arguments from a previous command, numbered like argv[] items.

Going further with the example, can even say `rm !:2-4`, which expands to `rm b c d`.

Check out section 9.3.2 in the bash manual for more on “Word Designators”.

]]> By: Hans http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3524 Hans Tue, 22 Jan 2008 14:43:19 +0000 http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3524 ^L is not a shell trick. If it works, it works because your terminal emulator wants it to. It doesn't in mine. It does however initiate a redraw in most curses-based programs (mutt, aptitude, etc.). ^L is not a shell trick. If it works, it works because your terminal emulator wants it to. It doesn’t in mine. It does however initiate a redraw in most curses-based programs (mutt, aptitude, etc.).

]]> By: philipp http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3521 philipp Tue, 22 Jan 2008 11:28:50 +0000 http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3521 I do: set -o vi and use all the wonderfull vi-commands. I do:
set -o vi
and use all the wonderfull vi-commands.

]]> By: Kai Grossjohann http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3520 Kai Grossjohann Tue, 22 Jan 2008 09:37:47 +0000 http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3520 I think it is worth saying that the argument of Ctrl-R is a substring to search for. That is, Ctrl-R x searches backwards for shell commands that have x anywhere in the line. It is also worth noting that M-. (ESC .) can be repeated: The first time, the last word of the previous command is inserted, hitting it again replaces it with the last word of the command before that, and so on. I like to use "!!" a lot, and I combine it with strings. For example, I might type "ifconfig eth0" to find the current IP address, only to discover that on this box, /sbin is not in $PATH. So I type "/sbin/!!" as a shortcut for "/sbin/ifconfig eth0". Another shortcut I would like to use is Ctrl-O, but I've not yet been able to train myself. Say you type five commands, then you want to repeat the same five commands in order. Then you could type to find the next command to repeat. Or you replace with Ctrl-O, and then you will see the correct "next" command in the command line. Here's something that I use: "!ma" to repeat the last command that begins with "ma", which most of the time will be some invocation of "make". I think it is worth saying that the argument of Ctrl-R is a substring to search for. That is, Ctrl-R x searches backwards for shell commands that have x anywhere in the line.

It is also worth noting that M-. (ESC .) can be repeated: The first time, the last word of the previous command is inserted, hitting it again replaces it with the last word of the command before that, and so on.

I like to use “!!” a lot, and I combine it with strings. For example, I might type “ifconfig eth0″ to find the current IP address, only to discover that on this box, /sbin is not in $PATH. So I type “/sbin/!!” as a shortcut for “/sbin/ifconfig eth0″.

Another shortcut I would like to use is Ctrl-O, but I’ve not yet been able to train myself. Say you type five commands, then you want to repeat the same five commands in order. Then you could type to find the next command to repeat. Or you replace with Ctrl-O, and then you will see the correct “next” command in the command line.

Here’s something that I use: “!ma” to repeat the last command that begins with “ma”, which most of the time will be some invocation of “make”.

]]> By: tomchuk http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3516 tomchuk Tue, 22 Jan 2008 05:19:52 +0000 http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3516 Add to your ~/.inputrc : "\e[5~": history-search-backward "\e[6~": history-search-forward Type the first few chars of a command and press page-up/page-dn Add to your ~/.inputrc :

“\e[5~”: history-search-backward
“\e[6~”: history-search-forward

Type the first few chars of a command and press page-up/page-dn

]]> By: guignome http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3513 guignome Tue, 22 Jan 2008 02:16:46 +0000 http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3513 I often use echo $? to get the return value of the last command. If it's different from 0, it means that something went wrong. I often use echo $? to get the return value of the last command. If it’s different from 0, it means that something went wrong.

]]> By: Jeff Schroeder http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3507 Jeff Schroeder Mon, 21 Jan 2008 23:16:48 +0000 http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3507 This is from a tomboy note I've got named: bash-foo !! - Repeats and runs previous command echo !$ - will echo the last argument of the previous command !ssh - Runs the most recent command that begins with ssh !vi:p - Run the most recent vi command and only print it. This does not run the command. !vi:s/passwd/shadow/ - Run the most recent vi command replacing passwd with shadow !?passwd - Runs the most recent command that contains passwd anywhere ^file1^file2 - Repeat the previous command and replace the first instance of file1 with file2 CTRL E - end of line CTRL A - beginning of line CTRL Arrow (left or right) - left or right by 1 word CTRL R - reverse find as you type command history search CTRL W - delete the word to the left of the cursor (space separated) ALT Backspace - remove 1 word in a string. ie: cd /etc/ssh/authorized_keys ALT Backspace would remove authorized_keys Those are the main ones I use on a daily basis This is from a tomboy note I’ve got named:
bash-foo

!! – Repeats and runs previous command
echo !$ – will echo the last argument of the previous command
!ssh – Runs the most recent command that begins with ssh
!vi:p – Run the most recent vi command and only print it. This does not run the command.
!vi:s/passwd/shadow/ – Run the most recent vi command replacing passwd with shadow
!?passwd – Runs the most recent command that contains passwd anywhere

^file1^file2 – Repeat the previous command and replace the first instance of file1 with file2

CTRL E – end of line
CTRL A – beginning of line
CTRL Arrow (left or right) – left or right by 1 word
CTRL R – reverse find as you type command history search
CTRL W – delete the word to the left of the cursor (space separated)

ALT Backspace – remove 1 word in a string. ie:
cd /etc/ssh/authorized_keys ALT Backspace would remove authorized_keys

Those are the main ones I use on a daily basis

]]> By: Gabriel Patiño http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3506 Gabriel Patiño Mon, 21 Jan 2008 23:12:48 +0000 http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3506 Also usefull when using a slow connection, or reseting a password input: ctrl-u, clears to the begining of line Also usefull when using a slow connection, or reseting a password input:

ctrl-u, clears to the begining of line

]]> By: Robin http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3504 Robin Mon, 21 Jan 2008 21:08:17 +0000 http://ubuntu-tutorials.com/2008/01/21/shell-shortcuts/#comment-3504 Thanks, I didn't know esc-. or alt-., I always used !$ for that! There's of course ctrl-a, ctrl-e, ctrl-w and alt-f (which I have mapped to ctrl-f, for easier combination with ctrl-a/w). Thanks, I didn’t know esc-. or alt-., I always used !$ for that!

There’s of course ctrl-a, ctrl-e, ctrl-w and alt-f (which I have mapped to ctrl-f, for easier combination with ctrl-a/w).

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