Question

I make few commands to parse values from free -m and now need to output all in one file. It looks like this:

free -m | grep 'Mem' | awk '{print $3'} && free -m | grep 'Mem' | awk '{print $6'} && free -m | grep 'Mem' | awk '{print $7'} && free -m | grep 'cache:' | awk '{print $3'}

if I add > /some/file on end, it write only last value, how to write output from all this commands to one file?
thanks for any help

Answer 1

Add parentheses to open a sub shell:

( free -m | grep 'Mem' | awk '{print $3'} && free -m | grep 'Mem' | awk '{print $6'} && free -m | grep 'Mem' | awk '{print $7'} && free -m | grep 'cache:' | awk '{print $3'} ) > result.txt