List Proxmox LXC containers by memory usage

pve_lxc_top_mem.sh

#!/bin/bash

TMPFILE="$(mktemp)"
PCTLIST="$(pct list | grep running | awk '{ print $1 }')"
PCTCOUNT="$(echo $PCTLIST | wc -w)"

i=0;
for id in $PCTLIST; do
	i=$((i+1))
	echo -ne "Analyzing $i/$PCTCOUNT...\r"

	STATUS="$(pct status $id -verbose)"
	NAME="$(echo $STATUS | grep -Po '\sname: \K\w+')"
	MAXMEM="$(echo $STATUS | grep -Po '\smaxmem: \K[0-9]+')"
	MEM="$(echo $STATUS | grep -Po '\smem: \K[0-9]+')"
	MEMPCT=$(( ($MEM * 100) / $MAXMEM ))

	echo "$id $NAME $(($MEM/1000000)) $(($MAXMEM/1000000)) ${MEMPCT}%" >> "$TMPFILE"
done

undl="$(printf '\u001b[4m')"
nrml="$(printf '\u001b[0m')"

awk '{ print substr($NF, 1, length($NF)-1) " " $0 }' "$TMPFILE" | sort -nr | cut -d' ' -f2- | sed "1i${undl}ID${nrml} ${undl}NAME${nrml} ${undl}USED_MB${nrml} ${undl}TOTAL_MB${nrml} ${undl}USED_PCT${nrml}" | column -t

rm "$TMPFILE"