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I have to write down a script that execute this command


and insert only the value near in a variable.

I will explain more exactly it:
when I execute the command "time ./my_program" the shell print this answer:



In the first line there is the result making by my_program
and then there are 3 lines reporting the time that the OS spends to execute it.
My problem is :

I have to use only the value reported near "user".
I tried to do it in this way:

but it doesn't work!
Can you help me please?

Thank you very much

Check the man page for the time command, it should indicate a way to capture the timing output, then consider using grep or awk to extract the correct data from the output.

The time keyword has some magical powers. It's not really a command since it can works on multiple pipes.

time ( « help time » ) != /usr/bin/time (« man time » )