Measure the running time of any command

Reading Time: 1 minute


$ time any-command-to-run


For the following command:

$ time ./

After the script finished running, you’ll see:

real    1m37.121s
user    0m44.342s
sys     0m12.518s


  • real means the elapsed real (wall clock) time used by the process, in seconds.
  • user means the total number of CPU-seconds that the process used directly (in user mode), in seconds.
  • sys means the total number of CPU-seconds used by the system on behalf of the process (in kernel mode), in seconds.

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