May 2013
Beginner to intermediate
384 pages
7h 40m
English
book
Linux Shell Scripting Cookbook, Second Edition - Second Edition
by Shantanu Tushar, Sarath Lakshman
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Calculating the execution time for a command
While testing an application's efficiency or comparing different algorithms to solve a given problem, the execution time taken is very critical. A good algorithm should execute in a minimum amount of time. Let's see how to calculate the execution time.
How to do it...
- To measure the execution time, just prefix
timeto the command you want to run.For example:
$ time COMMANDThe command will execute and its output will be shown. Along with the output, the
timecommand appends the time taken instderr. An example is as follows:$ time ls test.txt next.txt real 0m0.008s user 0m0.001s sys 0m0.003s
It will show real, user, and system times for execution.
Note
An executable binary of the
timecommand is available ...
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