05-prompt.sh

gistfile1.txt

#!/bin/bash

function update {
errcod="$?"
newPWD=${PWD/#$HOME/\~}
if [ "$errcod" -eq "0" ]
then
	unset fill errcod
else
	errcod=" Err: $errcod"
fi
local prompt="${newPWD}${errcod}"
local promptsizetotal
let promptsizetotal=${promptsize}+${#prompt}
if [ "$promptsizetotal" -gt ${COLUMNS} ]
then
	local cut
	let cut=3+${promptsizetotal}-${COLUMNS}
	newPWD="...$(echo -n $newPWD | sed -e "s/\(^.\{$cut\}\)\(.*\)/\2/")"
else
	if [ -n "$errcod" ]
	then
	local fillsize
	let fillsize=${COLUMNS}-${promptsizetotal}
	fill=""
	while [ "$fillsize" -gt "0" ]
	do 
		fill="${fill} "
		let fillsize=${fillsize}-1
	done
	fi
fi
}

function setprompt {
local cur_tty=$(tty)
cur_tty=${cur_tty:5}

COLUMNS=80

case $TERM in
    xterm*|rxvt*|screen*)
	local prompt=$(echo -n "${USER}@${HOSTNAME%%.*}:");
	PROMPT_COMMAND="update;echo -ne \"\033]0;${USER}@${HOSTNAME%%.*}:\${newPWD} ($cur_tty)\007\""
        ;;
    *)
	local prompt=$(echo -n "${USER}@${HOSTNAME%%.*}: (${cur_tty})")
	PROMPT_COMMAND=update
        ;;
esac

let promptsize=$(echo -n ${prompt}|wc -c|tr -d " ")

if [ "$UID" -eq "0" ]
then
	local COLOR1="\[\033[0;1;7;31;47m\]"
	local promptchar="#"
else
	local COLOR1="\[\033[0;7;36m\]"
	local promptchar="$"
fi
local COLOR2="\[\033[7;44m\]"
local COLOR3="\[\033[0;34m\]"
local COLOR4="\[\033[1;37m\]"
local NO_COLOR="\[\033[0m\]"

if [ $(tput colors) -lt "8" ]; then
unset COLOR1
unset COLOR2
unset COLOR3
unset COLOR4
unset NO_COLOR
fi

case $TERM in
    xterm*|rxvt*|screen*)
PS1="$COLOR1\u$COLOR2@$COLOR1\h$COLOR3:$NO_COLOR\${newPWD}\${fill}\${errcod}\n\
$COLOR4$promptchar$NO_COLOR "
        ;;
    *)
PS1="$COLOR1\u$COLOR2@$COLOR1\h$COLOR3:$NO_COLOR\${newPWD} ($cur_tty)\${fill}\${errcod}\n\
$COLOR4$promptchar$NO_COLOR "
        ;;
esac
}

setprompt
unset setprompt