kill chrome if no memory available

killchrome

#add those to  ~/.bashrc  and call `chromekiller`
danger(){
echo "huuu!" ; 

#check this for installing say https://askubuntu.com/questions/501910/how-to-text-to-speech-output-using-command-line
say "hello"
sleep 0.5
}

chromekiller(){
echo "I will close chrome if memory less than 1GB!"
while :; do
#mem='smem -t  -c pss -P chrom  | tail -n 1'

#mem="cat /proc/meminfo | grep -e MemFree -e Buffers -e SwapFree | gawk 'BEGIN{s=0}{s+=$2}END{print s}'"

# TODO : help me to save cat /proc/meminfo | grep -e MemFree -e Buffers -e SwapFree | gawk 'BEGIN{s=0}{s+=$2}END{print s}' as available


#echo $($mem)
# if free memory less than 2GB I will kill chrome !! to avoid PC freezing 
  (( $(cat /proc/meminfo | grep -e MemFree -e Buffers -e SwapFree | gawk 'BEGIN{s=0}{s+=$2}END{print s}') <= 1048576 )) && killall chrome  

  (( $(cat /proc/meminfo | grep -e MemFree -e Buffers -e SwapFree | gawk 'BEGIN{s=0}{s+=$2}END{print s}') <= 2097152 )) &&  danger


  sleep 0.5
done

}

help me to save cat /proc/meminfo | grep -e MemFree -e Buffers -e SwapFree | gawk 'BEGIN{s=0}{s+=$2}END{print s}' as available

How do i set up and run the script on linux

How do i set up and run the script on linux

chmod +x /path/to/yourscript.sh
more details here https://askubuntu.com/questions/38661/how-do-i-run-sh-scripts