linux - Trying to use awk to print a column but says print not found -

so trying homework , having lot of issues. first script have written in unix/linux. right trying print out few columns free command , use awk grab columns need. every time try this, bash: print command not found.

command trying use:

free | awk `{print $3}` 

i have tried without {}.

so when finished example: total free memory: xx mb xx filled in of course result.

any appreciated. thanks.

update: okay don't use backticks work. whole command end saying: total free memory: xx mb

the command have far is:

echo "current free memory: " | free -m | awk '{print $3}' 

i want 1 column row intersection.

you should go field 4. suggest using awk , sed you.

here suggestion :

freem="$(free -m | awk '{print $4}' | sed -n '2p')"  echo "total free memory: $freem mb" 

where $4 columns want , 2p line want.

before writing script, check result in command line.