OOM warner script

oom-warner.sh

#!/bin/bash

# Run from ~/.bashrc as
# if pgrep oom-warner > /dev/null; then
#   echo oom-warner already running, exiting...
# else
#   nohup ~/bin/oom-warner.sh &
# fi


#Minimum available memory limit, MB
THRESHOLD=500

#Check time interval, sec
INTERVAL=20

while :
do

    free=$(free -m|awk '/^Mem:/{print $4}')
    buffers=$(free -m|awk '/^Mem:/{print $6}')
    available=$(free -m | awk '/^Mem:/{print $7}')

    message="Free $free""MB"", buffers $buffers""MB"", available $available""MB"""

    if [ $available -lt $THRESHOLD ]
        then
        notify-send "Memory is running out!" "$message"
    fi

    echo $message

    sleep $INTERVAL