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I would like to make a script that outputs only the real time value from the time command so I can plot the results. For example time command outputs
real 1m0.001s user 1m0.000s sys 0m0.001s I want to write a script that outputs
60.001 How do I get just real time value from 'time' command in seconds?
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Time Command Versions To use the Gnu time command, you need to specify the full path to the time binary, usually /usr/bin/time , use the env command or use a leading backslash \time which prevents both and built-ins from being used.
This is all elapsed time including time slices used by other processes and time the process spends blocked (for example if it is waiting for I/O to complete). User is the amount of CPU time spent in user-mode code (outside the kernel) within the process. This is only actual CPU time used in executing the process.
Current time in Mac OSX for command above is: /usr/bin/time: illegal option -- f usage: time [-lp] command.
To use the timedatectl command, type “timedatectl” at the command prompt. This will display the current system time and date settings.
If you're using the Bash builtin time, set the TIMEFORMAT variable to %R:
$ TIMEFORMAT=%R $ time sleep 1 1.022 time can take an optional --format or -f parameter, but you have to use the full path to the time command, /usr/bin/time
/usr/bin/time -f "%e" sleep 3 3.00 Without the path, it'll use the time command of the shell which just treats all arguments as the command, so you'll get an -f: command not found.
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