ayozone

I have looked for this for a long time: how to have good fancy bash prompt. I found several example made in 1996 or 1998 that I had to tweak a lot.

But this was tricky and never work well, for example when I wanted to search a command back in the history using the arrows (up and down) or the CTRL-R key binding, there was a column problem.
If I wanted to change some chars or words in the command I picked in the history, they were not where I saw them, also sometimes a part of the prompt was hidden by the command. Not really useful.

Recently, I gave a try to BashStyle-ng to see how it could tweak my bash prompt. And I was surprised to see an option to have an “elite” prompt (which was the name of the old prompt I tweaked before). So I choose this one and see that it needs some tweak (again) to looks like what I wanted.
I search for the function in BashStyle code, found it and start to make some changes, and was happy to see that my history bug doesn’t come up. After a while (not so long), I find a way to have it exactly how I wanted.
So here’s the first part of my new .bashrc heavily inspired by bashstyle :
Note : As the special chars that draw the corners and line won’t appear on a web page, I have put the file in attachement at the bottom of the post.

#!/bin/bash
	

		
based on a function found in bashtstyle-ng 5.0b1
		
Original author Christopher Roy Bratusek (http://www.nanolx.org)
	
	

		
Last arranged by ayoli (http://ayozone.org) 2008-02-04 17:16:43 0100 CET 

	
function pre_prompt {

newPWD=”${PWD}”

user=”whoami”

host=$(echo -n $HOSTNAME | sed -e “s/[\.].//”)

datenow=$(date “%a, %d %b %y”)

let promptsize=$(echo n “-($user@$host ddd, DD mmm YY)—-(${PWD})—-” \
                 | wc -c | tr d ” ”)

let fillsize=${COLUMNS}${promptsize}

fill=””

while [ ”$fillsize” -gt “0” ] 

do 
    fill=”${fill}—”

let fillsize=${fillsize}-1

done

if [ ”$fillsize” lt “0” ]

then
    let cutt=3${fillsize}
    newPWD=”...$(echo -n $PWD | sed -e “s/\(^.\{$cutt\}\)\(.\)/\2/”)”

fi
	
}
	
PROMPT_COMMAND=pre_prompt
	
export black=”\[\033[0;38;5;0m\]”

export red=”\[\033[0;38;5;1m\]”

export green=”\[\033[0;38;5;2m\]”

export yellow=”\[\033[0;38;5;3m\]”

export blue=”\[\033[0;38;5;4m\]”

export magenta=”\[\033[0;38;5;55m\]”

export cyan=”\[\033[0;38;5;6m\]”

export white=”\[\033[0;38;5;7m\]”

export coldblue=”\[\033[0;38;5;33m\]”

export smoothblue=”\[\033[0;38;5;111m\]”

export iceblue=”\[\033[0;38;5;45m\]”

export turqoise=”\[\033[0;38;5;50m\]”

export smoothgreen=”\[\033[0;38;5;42m\]”
	
PS1=”$green??($coldblue\u@\h \$(date \”%a, %d %b %y\”)$green)?\${fill}?($coldblue\$newPWD\

$green)???\n$green($coldblue\$(date \”%H:%M\”) \$$green)?>$white ”

The second part is more about the aliases and other settings of my shell :

		
bash_history settings: size and no duplicates and no lines w/ lead spaces

exportHISTCONTROL=”ignoreboth”

export HISTSIZE=1024

		
aliases #############################################
		
enable color support of ls and also add handy aliases
eval `dircolors -b`
alias ls=’ls—color=auto’
alias dir=’ls—color=auto—format=vertical’
alias vdir=’ls—color=auto—format=long’
		
some more ls aliases
alias ll=’ls -lhX’
alias la=’ls -A’
alias ldir=’ls -lhA |grep ^d’
alias lfiles=’ls lhA |grep ’
#alias l=’ls -CF’
		
To see something coming into ls output: lss
	
alias lss=’ls -lrt | grep $1’
	

		
To check a process is running in a box with a heavy load: pss
	
alias pss=’ps -ef | grep $1’
	

		
usefull alias to browse your filesystem for heavy usage quickly
	
alias ducks=’ls -A | grep -v -e ’\’‘\.\.$’\’’ |xargs -i du -ks {} |sort -rn |head -16 | awk ’\’’{print $2}’\’’ | xargs -i du -hs {}’
	

		
cool colors for manpages
	
alias man=”TERMINFO=~/.terminfo TERM=mostlike LESS=C PAGER=less man”
	
##########################################################
	

		
enable programmable completion features (you don’t need to enable
		
this, if it’s already enabled in /etc/bash.bashrc).

if [ -f /etc/bash_completion ]; then
    . /etc/bash_completion

fi

		
CDPATH initialisation
		
CDPATH=.:~:/media