The timeit utility measures the time of command execution.

It has the following features:

• Color output.
• Human friendly output (for example: 1h32m43s instead of 5563.00), inspired by the FreeBSD /usr/bin/time.
• Periodic ticker.

Time a command, with or without options:

$ timeit sleep 61
timeit results:
    command succeeded
    real: 1m1.008s

Time a shell construct: you have to time the execution of a subshell, for example:

$ timeit fish -c 'for i in (seq 3); sleep 1; echo $i; end'
1
2
3
timeit results:
    command succeeded
    real: 3.035s

Time a command and print intermediate timings (color output by default):

$ timeit --ticker 30s sleep 60
timeit ticker: running for 30s
timeit ticker: running for 1m
timeit results:
    command succeeded
    real: 1m0.005s

The termination status of the command is always clearly reported:

$ timeit false
timeit results:
    command failed: exit status 1
    real: 2ms

$ timeit sleep 2
^Ctimeit: got signal name=interrupt count=1 disposition=ignore
timeit results:
    command terminated abnormally: signal: interrupt
    real: 1.851s

Time a command, observe its output and summarize in-flight operations (example: pytest --verbose):

$ timeit --ticker=30s --observe=pytest pytest --verbose testdata/pytest
test_fruits.py::test_apple
test_fruits.py::test_banana
...
[gw3] [4%] PASSED test_fruits.py::test_banana
test_herbs.py::test_coriander
[gw2] [9%] PASSED test_herbs.py::test_basil
...
timeit ticker: running for 2m0s
in-flight:                                <== sorted by age (oldest first)
    test_fruits.py::test_appple    50s
    test_fruits.py::test_banana    48s
    test_herbs.py::test_coriander   3s
...    
finished:                                 <== optional, only if verbose
    test_fruits.py::test_banana    1h3m
    test_herbs.py::test_basil        3s
...    
timeit results:
    command succeeded
    real: 2h34m21s
    slowest flights:
        test_fruits.py::test_banana      1h3m
        test_herbs.py::test_coriander   48m3s

Check online if there is a more recent version:

$ timeit --check-version
installed version v0.2.1 is older than the latest version v0.3.0
To upgrade visit https://github.com/marco-m/timeit

Pre 1.0.0. Working and tested, backwards incompatible changes possible.

Unix-like and macOS.

timeit, like its ancestor /usr/bin/time, will ignore SIGINT (CTRL-C) and will transparently let the timed command decide how to handle the signal. This allows for example the timed command to react to SIGINT by entering a cleanup phase before exiting.

In any case, timeit will exit with the same exit status of the timed command.

1. Download the archive for your platform from the releases page.
2. Unarchive and copy the timeit executable somewhere in your $PATH.

You have to cope with the macOS gatekeeper, that will put the executable in quarantine, since it is not signed nor notarized. There are two options:

1. Download the archive with a command-line tool, like curl or wget.
2. Download the archive with a web browser, unarchive and run

   $ xattr -d com.apple.quarantine timeit
   

1. Install Task.
2. Run it: task.

Then, copy the executable to a directory in your $PATH.

$ env RELEASE_TAG=v0.1.0 summon task release

This code is released under the MIT license, see file LICENSE.

• FreeBSD /usr/bin/time (man page, C source).