Plot Size tool

plot_size

#!/bin/bash
if [[ "$1" == "" ]];then
  echo "Usage: plot_size <mountpoint> [-k]";
  echo "  <mountpoint>: Mount point to monitor";
  echo "  -k don't remove old data before graphing";
  exit 1;
fi;
if [[ "$(df | grep $1)" == "" ]];then
  echo "Unable to find mountpoint $1";
  exit 1;
fi;
function update(){
  while true;do
    echo -e "$(tail -n 300 /tmp/plot_size.dat)\n$(df | grep $1 | awk '{print systime()" "$3}')" > /tmp/plot_size.dat;
    sleep 1;
  done;
}
if [[ "$2" != "-k" ]];then
  echo -n > /tmp/plot_size.dat;
fi;
trap 'kill $(jobs -p)' EXIT
update "$1" &
trap "tput cnorm" EXIT
tput civis
while inotifywait --quiet -e close_write /tmp/plot_size.dat > /dev/null;do
  cat /tmp/plot_size.dat | gnuplot -e "\
    set xlabel 'Time'; \
    set ylabel 'Size'; \
    set title '/tmp $(df -h | grep $1 | awk '{print $3" "$5}')'; \
    set term dumb $(tput cols) $(tput lines); \
    set xdata time; \
    set timefmt '%s'; \
    set format x '%H:%M:%S'; \
    set ytics format '%.0s%cB'; \
    set yrange [0:*]; \
    plot '-' using 1:(\$2*1000) notitle with lines ls 1;" | grep --color -E '\*|$';
done;

REAME.md

Simple tool to plot out changes in used space on a mount point. Useful for watching the changes in space usage in /tmp

# Install gnuplot and inotify-tools
plot_size /tmp