Gimme all processes using >= 200MB rss size on STDOUT in JSON format on Linux

ps.sh

#!/usr/bin/env bash

# Uses `ps` from $PATH (usually /usr/bin/ps) to get processes, then filters
# those by how much rss they're using; anything lower than the amount defined
# below as $THRESHOLD is discarded. Outputs JSON to STDOUT. No arguments.

declare -a pids
declare -a cmds
declare -a rss

# NOTE: This threshold is defined as KILOBYTES per `man ps`, not BYTES as in the
# PowerShell script. Adjust the math accordingly.

THRESHOLD=200000 # Don't report anything w/ RSS under this value (in kb)

while read data; do
	this_rss=($(echo $data | awk '{print $2}'))
	if [ "${this_rss}" -ge "${THRESHOLD}" ]; then
		pids+=($(echo $data | awk '{print $1}'))
		rss+=($this_rss)
		cmds+=($(echo $data | awk '{print $3}'))
	fi
done < <(ps -haxo pid,rss,command)

echo "{ \"processes\": ["

for i in "${!pids[@]}"
do
	echo -n "	{
		\"pid\": \"${pids[$i]}\",
		\"rss\": \"${rss[$i]}\",
		\"command\": \"${cmds[$i]}\"
	}"
	if [ "${pids[$i]}" != "${pids[-1]}" ]
	then
		echo ","
	fi
done
echo ""
echo "]}"

#
# Some notes:
# 1. This probably won't work without modification on MacOS (or anything not Linux)
# 2. Has not been tested beyond just my Linux box (Ubuntu 21.10)
# 3. This is only for quick-and-dirty demonstration purposes. It's not a real or supported tool.
# 4. Shell script wizards can probably do this a little better, maybe a lot better. Go for it! Just don't take pot shots
#    because the fact is, you shouldn't *have* to be a wizard to be able to get useful things done.
#    Gatekeeping is a sign of insecurity.
#