Power Prompt 2

The code is a mess, it's huge, it's very slow. It's also garish. That said, I still think it's kind of neat, because it provides a lot of information.

The third set of blue square brackets is the most interesting and the least obvious: "<A>.<B>-<C>x" indicates A files in the current directory, B hidden files. Of the visible files, C of them are executable. "1.0d" indicates 1 directory, no hidden directories. These parts will always appear. If you cd to a directory with links or block devices (such as /dev), you get more information. The next set of blue square brackets indicates the load, and the final set on the first line is the number of running processes.

Code:

#!/bin/bash
#----------------------------------------------------------------------
#       POWER USER PROMPT "pprom2"
#----------------------------------------------------------------------
#
#   Created August 98, Last Modified 9 November 98 by Giles
#
#   Problem: when load is going down, it says "1.35down-.08", get rid 
#   of the negative
#   - limit the length of the $PWD to 30 chars - right-truncate if 
#   it exceeds that

function prompt_command
{
#   Create TotalMeg variable: sum of visible file sizes in current directory
local TotalBytes=0
for Bytes in $(ls -l | grep "^-" | cut -c30-41)
do
    let TotalBytes=$TotalBytes+$Bytes
done
TotalMeg=$(echo -e "scale=3 \nx=$TotalBytes/1048576\n if (x<1) {print \"0\"} \n print x \nquit" | bc)

#      This is used to calculate the differential in load values
#      provided by the "uptime" command.  "uptime" gives load 
#      averages at 1, 5, and 15 minute marks.
#
local one=$(uptime | sed -e "s/.*load average: \(.*\...\), \(.*\...\), \(.*\...\)/\1/" -e "s/ //g")
local five=$(uptime | sed -e "s/.*load average: \(.*\...\), \(.*\...\), \(.*\...\).*/\2/" -e "s/ //g")
local diff1_5=$(echo -e "scale = scale ($one) \nx=$one - $five\n if (x>0) {print \"up\"} else {print \"down\"}\n print x \nquit \n" | bc)
loaddiff="$(echo -n "${one}${diff1_5}")"

#   Count visible files:
let files=$(ls -l | grep "^-" | wc -l | tr -d " ")
let hiddenfiles=$(ls -l -d .* | grep "^-" | wc -l | tr -d " ")
let executables=$(ls -l | grep ^-..x | wc -l | tr -d " ")
let directories=$(ls -l | grep "^d" | wc -l | tr -d " ")
let hiddendirectories=$(ls -l -d .* | grep "^d" | wc -l | tr -d " ")-2
let linktemp=$(ls -l | grep "^l" | wc -l | tr -d " ")
if [ "$linktemp" -eq "0" ]
then
    links=""
else
    links=" ${linktemp}l"
fi
unset linktemp
let devicetemp=$(ls -l | grep "^[bc]" | wc -l | tr -d " ")
if [ "$devicetemp" -eq "0" ]
then
    devices=""
else
    devices=" ${devicetemp}bc"
fi
unset devicetemp

}

PROMPT_COMMAND=prompt_command

function pprom2 {

local        BLUE="\[\033[0;34m\]"
local  LIGHT_GRAY="\[\033[0;37m\]"
local LIGHT_GREEN="\[\033[1;32m\]"
local  LIGHT_BLUE="\[\033[1;34m\]"
local  LIGHT_CYAN="\[\033[1;36m\]"
local      YELLOW="\[\033[1;33m\]"
local       WHITE="\[\033[1;37m\]"
local         RED="\[\033[0;31m\]"

case $TERM in
    xterm*)
        TITLEBAR='\[\033]0;\u@\h:\w\007\]'
        ;;
    *)
        TITLEBAR=""
        ;;
esac

PS1="$TITLEBAR\
$BLUE[$RED\$(date +%H%M)$BLUE]\
$BLUE[$RED\u@\h$BLUE]\
$BLUE[\
$LIGHT_GRAY\${files}.\${hiddenfiles}-\
$LIGHT_GREEN\${executables}x \
$LIGHT_GRAY(\${TotalMeg}Mb) \
$LIGHT_BLUE\${directories}.\
\${hiddendirectories}d\
$LIGHT_CYAN\${links}\
$YELLOW\${devices}\
$BLUE]\
$BLUE[${WHITE}\${loaddiff}$BLUE]\
$BLUE[\
$WHITE\$(ps ax | wc -l | sed -e \"s: ::g\")proc\
$BLUE]\
\n\
$BLUE[$RED\$PWD$BLUE]\
$WHITE\$\
\
$LIGHT_GRAY "
PS2='> '
PS4='+ '
}