shellfu-bash-saturnin/libexec/saturnin-watch

#!/bin/bash

. <(ffoom init)

ffoo import pretty
ffoo import recon

interval=2

report_limits() {
    echo "ulimit -m:$(ulimit -m)"
    echo "ulimit -Sm:$(ulimit -Sm)"
    echo "ulimit -Hm:$(ulimit -Hm)"
    echo "ulimit -n:$(ulimit -n)"
    echo "ulimit -Sn:$(ulimit -Sn)"
    echo "ulimit -Hn:$(ulimit -Hn)"
}

report_on_pids() {
    local pid
    for pid in "$@";
    do
        echo "$pid:name:$(ps -p $pid -o comm=)"
        echo "$pid:rss:$(ps -p $pid -o rss=)"
        echo "$pid:files:$(lsof -p $pid | wc -l)"
    done
}

usage() {
    usage_is "[-i INTERVAL] [-d] -p PID[,PID]..." \
             "[-i INTERVAL] [-d] -r REGEX[,REGEX]..."
}

regexes=""
pids=""

while true;
do
    case $1 in
        -i|--interval)
            interval=$2
            shift 2
            ;;
        -r|--regexes)
            regexes=$2
            shift 2
            ;;
        -p|--pids)
            pids=$2
            shift 2
            ;;
        "")
            if test -z "$regexes" && test -z "$pids";
                then usage;
                else break;
            fi
            ;;
        *)
            usage
            ;;
    esac
done

pids=$(tr "," " " <<<"$pids")
regexes=$(tr "," " " <<<"$regexes")

report_limits
while true;
do
    # append PIDS from regexes to pids from command line
    current_pids="$pids $(pids_matching $regexes)"
    debug -v current_pids
    report_on_pids $current_pids
    sleep $interval
done