Bash

Created by dave. Last edited by dave, 4 years and 115 days ago. Viewed 5,375 times. #8

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Key accelerators

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Combination	Does
Ctrl-A	Jump to beginning of the line (beware screen stealing Ctrl-A)
Ctrl-E	Jump to the end of the line
Alt-F	Jump forward one word
Alt-B	Jump back one word
Ctrl-U	Delete all characters before cursor
Ctrl-K	Delete all characters from cursor to end of line
Ctrl-R	Enter history search mode Type Ctrl-R, then command fragment; Ctrl-R then scrolls through matching entries
Alt-U	Make the word (or fragment of word) after the cursor uppercase
Alt-L	Make the word (or fragment of word) after the cursor lowercase
Alt-C	Capitalize the word (or letter) the cursor is on

Excluding things from the history

export HISTIGNORE="&:ls:[bf]g:exit"

Additionally, if you have

export HISTCONTROL=ignoreboth

somewhere in the dotfiles, the history won't record commands that are prefixed with a space.

Making bash history completion work automatically

Here is a way to jump directly to the command in the .bash_history file. Edit your /etc/inputrc file and add the following:

"\M-[A":history-search-backward
"\M-[B":history-search-forward

Then restart bash type the first letter or 2 of a previously typed command and you will jump to that command. The more letter you type in first the more you will narrow the search to.

By typing part of a previously used command, and then pressing the up or down arrows, scrolling is limited to only those command which match the letters that have been typed.

(Source: https://www.redhat.com/archives/shrike-list/2004-March/msg00187.html)

(Note that this seems to have the side-effect of breaking cursor-key left/right functionality on Suns.)

Syslogging everything done from a bash session

Add something like this to .bashrc

# export PROMPT_COMMAND='history -a >(tee -a ~/.bash_history./$$ | logger -t "bash[$$][$USER]$SSH_CONNECTION")'

Note: this isn't for security because it would be trivial to evade. The intention is to discreetly log everything that's done through bash, presumably for auditing purposes.

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Bash

Key accelerators

Excluding things from the history

Making bash history completion work automatically

Syslogging everything done from a bash session

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