Raspbian: De bash prompt aanpassen

1 gedachte over “Raspbian: De bash prompt aanpassen”

1. O.A de kleuren veranderen van de prompt naarmate de load veranderd.
   Groen – alles oke
   Geel – load hoger
   Rood – Load hoog
   Wit – Je Raspberry is witheet 🙂
   ————————–

   ## ~/.bashrc: executed by bash(1) for non-login shells.

   ## Note: PS1 and umask are already set in /etc/profile. You should not
   ## need this unless you want different defaults for root.
   ## PS1=’${debian_chroot:+($debian_chroot)}\h:\w\$ ‘
   ## umask 022

   HISTCONTROL=ignoreboth
   export HISTCONTROL=ignoreboth

   ## You may uncomment the following lines if you want `ls’ to be colorized:

   export LS_OPTIONS=’–color=auto’
   eval “`dircolors`”
   alias ls=’ls $LS_OPTIONS’
   alias ll=’ls $LS_OPTIONS -l’
   alias l=’ls $LS_OPTIONS -lA’

   ## Normal Colors
   Black=’\e[0;30m’ # Black
   Red=’\e[0;31m’ # Red
   Green=’\e[0;32m’ # Green
   Yellow=’\e[0;33m’ # Yellow
   Blue=’\e[0;34m’ # Blue
   Purple=’\e[0;35m’ # Purple
   Cyan=’\e[0;36m’ # Cyan
   White=’\e[0;37m’ # White

   ## Bold
   BBlack=’\e[1;30m’ # Black
   BRed=’\e[1;31m’ # Red
   BGreen=’\e[1;32m’ # Green
   BYellow=’\e[1;33m’ # Yellow
   BBlue=’\e[1;34m’ # Blue
   BPurple=’\e[1;35m’ # Purple
   BCyan=’\e[1;36m’ # Cyan
   BWhite=’\e[1;37m’ # White

   ## Background
   On_Black=’\e[40m’ # Black
   On_Red=’\e[41m’ # Red
   On_Green=’\e[42m’ # Green
   On_Yellow=’\e[43m’ # Yellow
   On_Blue=’\e[44m’ # Blue
   On_Purple=’\e[45m’ # Purple
   On_Cyan=’\e[46m’ # Cyan
   On_White=’\e[47m’ # White

   NC=”\e[m” # Color Reset

   ## Some more alias to avoid making mistakes:
   alias rm=’rm -i’
   alias cp=’cp -i’
   alias mv=’mv -i’

   let upSeconds=”$(/usr/bin/cut -d. -f1 /proc/uptime)”
   let mins=$((${upSeconds}/60%60))
   let hours=$((${upSeconds}/3600%24))
   let days=$((${upSeconds}/86400))
   UPTIME=`printf “%02d dagen, %02d uur en %02d minuten” “$days” “$hours” “$mins”`

   echo “Welcome Stranger..”
   echo “$(tput setaf 3)
   System………….: `uname -srmo`
   Date……………: `date +”%A, %e %B %Y, %R Hour”`
   Uptime………….: ${UPTIME}
   Load……………: `cat /proc/loadavg`
   Local IP Addresses.: `ip address list | grep “inet ” | grep -v 127.0.0 | cut -d ” ” -f 6 | cut -d “/” -f 1`
   CPU Temperature….: `exec — /opt/vc/bin/vcgencmd measure_temp | cut -c “6-9″` C
   Volt……………: `exec — vcgencmd measure_volts | cut -c “6-9″` C
   Eindhoven Weather..: `curl -s “http://rss.accuweather.com/rss/liveweather_rss.asp?metric=1&locCode=EUR|NL|NL007|EINDHOVEN” | sed -n ‘/Currently:/ s/.*: \(.*\): \([0-9]*\)\([CF]\).*/\2°\3, \1/p’`
   $(tput sgr0)”

   echo ——————-
   MHZ=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq)
   echo CPU Speed $(($MHZ/1000)) Mhz
   echo ——————-

   # curl https://ip.appspot.com

   echo

   #####

   #————————————————————-
   # Shell Prompt – for many examples, see:
   # http://www.debian-administration.org/articles/205
   # http://www.askapache.com/linux/bash-power-prompt.html
   # http://tldp.org/HOWTO/Bash-Prompt-HOWTO
   # https://github.com/nojhan/liquidprompt
   #————————————————————-
   # Current Format: [TIME USER@HOST PWD] >
   # TIME:
   # Green == machine load is low
   # Orange == machine load is medium
   # Red == machine load is high
   # ALERT == machine load is very high
   # USER:
   # Cyan == normal user
   # Orange == SU to user
   # Red == root
   # HOST:
   # Cyan == local session
   # Green == secured remote connection (via ssh)
   # Red == unsecured remote connection
   # PWD:
   # Green == more than 10% free disk space
   # Orange == less than 10% free disk space
   # ALERT == less than 5% free disk space
   # Red == current user does not have write privileges
   # Cyan == current filesystem is size zero (like /proc)
   # >:
   # White == no background or suspended jobs in this shell
   # Cyan == at least one background job in this shell
   # Orange == at least one suspended job in this shell
   #
   # Command is added to the history file each time you hit enter,
   # so it’s available to all shells (using ‘history -a’).

   # Test connection type:
   if [ -n “${SSH_CONNECTION}” ]; then
   CNX=${Green} # Connected on remote machine, via ssh (good).
   elif [[ “${DISPLAY%%:0*}” != “” ]]; then
   CNX=${ALERT} # Connected on remote machine, not via ssh (bad).
   else
   CNX=${BCyan} # Connected on local machine.
   fi

   # Test user type:
   if [[ ${USER} == “root” ]]; then
   SU=${Red} # User is root.
   elif [[ ${USER} != $(logname) ]]; then
   SU=${BRed} # User is not login user.
   else
   SU=${BCyan} # User is normal (well … most of us are).
   fi

   NCPU=$(grep -c ‘processor’ /proc/cpuinfo) # Number of CPUs
   SLOAD=$(( 100*${NCPU} )) # Small load
   MLOAD=$(( 200*${NCPU} )) # Medium load
   XLOAD=$(( 300*${NCPU} )) # Xlarge load

   # Returns system load as percentage, i.e., ’40’ rather than ‘0.40)’.
   function load()
   {
   local SYSLOAD=$(cut -d ” ” -f1 /proc/loadavg | tr -d ‘.’)
   # System load of the current host.
   echo $((10#$SYSLOAD)) # Convert to decimal.
   }

   # Returns a color indicating system load.
   function load_color()
   {
   local SYSLOAD=$(load)
   if [ ${SYSLOAD} -gt ${XLOAD} ]; then
   echo -en ${ALERT}
   elif [ ${SYSLOAD} -gt ${MLOAD} ]; then
   echo -en ${Red}
   elif [ ${SYSLOAD} -gt ${SLOAD} ]; then
   echo -en ${Yellow}
   else
   echo -en ${Green}
   fi
   }

   # Returns a color according to free disk space in $PWD.
   function disk_color()
   {
   if [ ! -w “${PWD}” ] ; then
   echo -en ${Red}
   # No ‘write’ privilege in the current directory.
   elif [ -s “${PWD}” ] ; then
   local used=$(command df -P “$PWD” |
   awk ‘END {print $5} {sub(/%/,””)}’)
   if [ ${used} -gt 95 ]; then
   echo -en ${ALERT} # Disk almost full (>95%).
   elif [ ${used} -gt 90 ]; then
   echo -en ${BRed} # Free disk space almost gone.
   else
   echo -en ${Green} # Free disk space is ok.
   fi
   else
   echo -en ${Cyan}
   # Current directory is size ‘0’ (like /proc, /sys etc).
   fi
   }

   # Returns a color according to running/suspended jobs.
   function job_color()
   {
   if [ $(jobs -s | wc -l) -gt “0” ]; then
   echo -en ${BRed}
   elif [ $(jobs -r | wc -l) -gt “0” ] ; then
   echo -en ${BCyan}
   fi
   }

   # Adds some text in the terminal frame (if applicable).

   # Now we construct the prompt.
   PROMPT_COMMAND=”history -a”
   case ${TERM} in
   *term | rxvt | linux)
   PS1=”\[\$(load_color)\][\A\[${NC}\] ”
   # Time of day (with load info):
   PS1=”\[\$(load_color)\][\A\[${NC}\] ”
   # User@Host (with connection type info):
   PS1=${PS1}”\[${SU}\]\u\[${NC}\]@\[${CNX}\]\h\[${NC}\] ”
   # PWD (with ‘disk space’ info):
   PS1=${PS1}”\[\$(disk_color)\]\W]\[${NC}\] ”
   # Prompt (with ‘job’ info):
   PS1=${PS1}”\[\$(job_color)\]>\[${NC}\] ”
   # Set title of current xterm:
   PS1=${PS1}”\[\e]0;[\u@\h] \w\a\]”
   ;;
   *)
   PS1=”(\A \u@\h \W) > ” # –> PS1=”(\A \u@\h \w) > ”
   # –> Shows full pathname of current dir.
   ;;
   esac

   export TIMEFORMAT=$’\nreal %3R\tuser %3U\tsys %3S\tpcpu %P\n’
   export HISTIGNORE=”&:bg:fg:ll:h”
   export HISTTIMEFORMAT=”$(echo -e ${BCyan})[%d/%m %H:%M:%S]$(echo -e ${NC}) ”
   export HISTCONTROL=ignoredups
   export HOSTFILE=$HOME/.hosts # Put a list of remote hosts in ~/.hosts

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