Mini Shell

#!/bin/bash

# This tool is part of https://0x.tools

if [ $# -ne 1 ]; then
  echo "Usage: $0 SLEEP_SECONDS"
  exit 1
fi

F1=/tmp/vmtop1.$$.tmp
F2=/tmp/vmtop2.$$.tmp

cat /proc/vmstat > $F2

while true ; do
    clear
    echo `date` "    [0x.tools vmtop]"
    echo
    printf "%-32s %16s %16s %16s %16s\n" "METRIC" "DELTA" "DELTA_KB" "CURRENT" "CURRENT_MB"
    printf "%-32s %16s %16s %16s %16s\n" "-------------------------------" "----------------" "----------------" "----------------" "----------------"
    mv $F2 $F1
    cat /proc/vmstat > $F2
    join $F1 $F2 | grep ^nr | awk '{ printf("%-32s %16d %\47 16i %\47 16i %\47 16i\n", $1,$3-$2, ($3-$2)*4, $3, $3*4/1024) }' | grep -v ' 0 '
    sleep $1 
done


# TODO trap CTRL-C remove file