A quick script to check whether your system's current memory usage could fit entirely inside its swap space

freem.sh

#!/bin/bash

# A quick script to check whether your system's current memory
# usage could fit entirely inside its swap space.
#
# Might be useful in determining the likelihood of a
# successful suspend to disk operation.

MEM_USED=$(free -m | grep Mem | awk '{print $3}')
SWAP_FREE=$(free -m | grep Swap | awk '{print $4}')

if [ ! $MEM_USED -lt $SWAP_FREE ]; then
	printf "\x1b[31m✗\x1b[0m Mem Used: .$MEM_USED\n .Swap Free:.$SWAP_FREE\n"
	exit 1
fi
printf "\x1b[32m✓\x1b[0m Mem Used:  $MEM_USED\n  Swap Free: $SWAP_FREE\n"
exit 0