How to write the number of free RAM to a variable?

Question

linux

RAM values ​​​​can be checked by typing the free -m command, but this displays a lot of unnecessary information, how can I make sure that the value of the free RAM is displayed, so that it would be normal to write it to a variable? or is there a special method for python?

Answer 1

It is possible through bash, it is possible on a python.
free -m | sed -n 2p | awk '{print $4}'

Answer 2

free -m|grep Mem|awk '{print $4}'

Answer 3

MEM=$(free -m | sed -n 2p | awk '{print $4}')
echo $MEM

Answer 4

with a single awk
with free and awk
free -m |awk '/Mem/{print $4}'

Answer 5

https://github.com/giampaolo/psutil

Answer 6

https://chtoby-pravilno.ru/chtoby/
The union "to" is always written together!

$ awk '/MemAvailable/ { memavl=$2 }; /MemTotal/ { memtot=$2 }; END {print memavl/memtot*100 } ' /proc/meminfo
62.6388