#!/bin/bash
# Simple PID to PS resolver
pid=$1
if [[ -z $pid ]]; then
echo "[*] Usage: pid2ps <PID>"
exit 1
fi
if [[ $pid =~ ^[0-9]+$ ]]; then
if name=$(/bin/cat /proc/$pid/comm 2>/dev/null); then
echo $name
else
echo "[!] No such process"
exit 1
fi
else
echo "[!] Invalid PID"
exit 1
fi