Автоматизатор

# set a fancy prompt (non-color, unless we know we "want" color)
 
case "$TERM" in
    xterm*) color_prompt=yes;;
esac
 
# uncomment for a colored prompt, if the terminal has the capability; turned
# off by default to not distract the user: the focus in a terminal window
# should be on the output of commands, not on the prompt
#force_color_prompt=yes
function load_out() {
  #echo -n "$(LANG=en uptime | sed -e "s/.*load average: \(.*\...\), \(.*\...\), \(.*\...\).*/\1/" -e "s/ //g")"
    awk '{ printf( "%0.2f", $1 ) }' < /proc/loadavg
}
 
# print + or - relative to system load tendency
function load_trend() {
    awk '{ if ( $2 < $1 ) { t = "+" } else { t = "-" }; printf( "%c", t ) }' < /proc/loadavg
}
 
function load_color() {
  gray=0
  red=1
  green=2
  yellow=3
  blue=4
  magenta=5
  cyan=6
  white=7
 
  # Colour progression is important ...
  #   bold gray -> bold green -> bold yellow -> bold red ->
  #   black on red -> bold white on red
  #
  # Then we have to choose the values at which the colours switch, with
  # anything past yellow being pretty important.
 
  tmp=$(echo $(load_out)*100 | bc)
  let load100=${tmp%.*}
 
  if [ ${load100} -lt 70 ]
  then
    tput bold ; tput setaf ${gray}
  elif [ ${load100} -ge 70 ] && [ ${load100} -lt 120 ]
  then
    tput bold ; tput setaf ${green}
  elif [ ${load100} -ge 120 ] && [ ${load100} -lt 200 ]
  then
    tput bold ; tput setaf ${yellow}
  elif [ ${load100} -ge 200 ] && [ ${load100} -lt 300 ]
  then
    tput bold ; tput setaf ${red}
  elif [ ${load100} -ge 300 ] && [ ${load100} -lt 500 ]
  then
    tput setaf ${gray} ; tput setab ${red}
  else
    tput bold ; tput setaf ${white} ; tput setab ${red}
  fi
}
 
 
if [ -n "$force_color_prompt" ]; then
    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
    # We have color support; assume it's compliant with Ecma-48
    # (ISO/IEC-6429). (Lack of such support is extremely rare, and such
    # a case would tend to support setf rather than setaf.)
    color_prompt=yes
    else
    color_prompt=
    fi
fi
 
NORMAL="\[\e[00;39m\]"
RED="\[\e[01;31m\]"
GREEN="\[\e[01;32m\]"
BLUE="\[\e[01;34m\]"
BLUEBG="\[\e[01;34;01m\]"
U="\[\e[01;37;44m\]"
CYAN="\[$(tput bold ; tput setaf 6)\]"
NOCOLOUR="\[$(tput sgr0)\]"
 
if [ $EUID -eq 0 ]; then
  USERCOLOR="$RED"
else
  USERCOLOR="$GREEN"
fi
 
if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}'"\$(load_trend)\[\$(load_color)\]\$(load_out)${NOCOLOUR} ${USERCOLOR}\u@${CYAN}\h$NORMAL:${BLUE}\w${NORMAL}\$ "
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
fi
unset color_prompt force_color_prompt
 
# If this is an xterm set the title to user@host:dir
#case "$TERM" in
#xterm*|rxvt*)
#    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
#    ;;
#*)
#    ;;
#esac