mirror of
https://github.com/mbirth/wiki.git
synced 2024-11-14 14:06:46 +00:00
76 lines
1.9 KiB
Markdown
76 lines
1.9 KiB
Markdown
|
---
|
||
|
|
title: bash Tips & Tricks
|
||
|
|
layout: default
|
||
|
|
created: 2008-08-01 22:41:34 +0200
|
||
|
|
updated: 2009-02-08 14:32:54 +0100
|
||
|
|
toc: false
|
||
|
|
tags:
|
||
|
|
- know-how
|
||
|
|
- software
|
||
|
|
- linux
|
||
|
|
- software
|
||
|
|
- bash
|
||
|
|
---
|
||
|
|
Bourne Again Shell.
|
||
|
|
|
||
|
|
|
||
|
|
bash magic
|
||
|
|
==========
|
||
|
|
|
||
|
|
Some handy `bash` magic.
|
||
|
|
|
||
|
|
|
||
|
|
sudo last command
|
||
|
|
-----------------
|
||
|
|
|
||
|
|
sudo !!
|
||
|
|
|
||
|
|
If you forgot `sudo` after executing your 3-lines-command, sudo *bang! bang!* will repeat the last entered command with `sudo` prefixed.
|
||
|
|
|
||
|
|
|
||
|
|
More parameter magic
|
||
|
|
--------------------
|
||
|
|
|
||
|
|
| *bang* | Expands to |
|
||
|
|
|:----------:|:-----------|
|
||
|
|
| `!$` | last argument of previous command |
|
||
|
|
| `!$:p` | just show last argument of previous command, don't add to commandline |
|
||
|
|
| `!*` | **all** arguments of previous command |
|
||
|
|
| `!!:1` | first argument of previous command |
|
||
|
|
| `!vi` | last command that started with "*vi*" |
|
||
|
|
| `!vi:p` | just show last "*vi*"-call, don't run it again |
|
||
|
|
| `^err^corr` | replace all occurrences of `err` by `corr` in the last command |
|
||
|
|
|
||
|
|
|
||
|
|
Shortcuts
|
||
|
|
---------
|
||
|
|
|
||
|
|
| *keypress* | Description |
|
||
|
|
|:------------:|:---------------|
|
||
|
|
| <kbd>Ctrl</kbd>+<kbd>w</kbd> | Erase word |
|
||
|
|
| <kbd>Ctrl</kbd>+<kbd>u</kbd> | Erase from cursor to beginning of line |
|
||
|
|
| <kbd>Ctrl</kbd>+<kbd>a</kbd> | Move cursor to beginning of line |
|
||
|
|
| <kbd>Ctrl</kbd>+<kbd>e</kbd> | Move cursor to end of line |
|
||
|
|
| <kbd>Ctrl</kbd>+<kbd>r</kbd> | Search command history (type letters after this) |
|
||
|
|
|
||
|
|
|
||
|
|
chdir to last one
|
||
|
|
-----------------
|
||
|
|
|
||
|
|
cd -
|
||
|
|
|
||
|
|
Changes to previous directory.
|
||
|
|
|
||
|
|
|
||
|
|
Use output of previous command
|
||
|
|
------------------------------
|
||
|
|
|
||
|
|
Sometimes it's handy to use the output of a previous command, e.g. a `which`. To do that, simply use the *bang-bang* with the backtick operator:
|
||
|
|
|
||
|
|
$ which php
|
||
|
|
/usr/bin/php
|
||
|
|
$ ls -l `!!`
|
||
|
|
ls -l `which php`
|
||
|
|
lrwxrwxrwx 1 root root 21 2008-06-12 02:47 /usr/bin/php -> /etc/alternatives/php
|
||
|
|
$ _
|