However, how you execute time depends on your operating system. To time the execution duration of a command, you prefix your command with time. The examples in this tutorial (unless otherwise noted) will be using time that’s built into the Bash shell on Linux. In this tutorial, you’ll use the time command and explore its output. Instead, it times a program or script’s execution and tells you how long it took. The time command is in no way related to the date command, which provides the system’s date and time. The command-line is full of a bunch of small, single-purpose utilities that can help eliminate the need to write any additional code yourself. Or, you could save yourself all that trouble by leveraging the time command.
You could even grab your trusty stopwatch app and track things that way. You could track the start and end times and calculate the difference to get the duration. There are times you’ll want to know how long it took for a command or script to execute.
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