With the thousands of commands/programs available in Linux systems, knowing the type and purpose of a given command as well as its location (absolute path) on the system can be a little challenge for newbies.
Knowing a few details of commands/programs not only helps a Linux user master the numerous commands, but it also enables a user understand what operations on the system to use them for, either from the command line or a script.
Therefore, in this article we will explain to you five useful commands for showing a short description and the location of a given command.
To discover new commands on your system look into all the directories in your PATH environmental variable. These directories store all the installed commands/programs on the system.
Once you find an interesting command name, before you proceed to read more about it probably in the man page, try to gather some shallow information about it as follows.
Assuming you have echoed the values of PATH and moved into the directory /usr/local/bin and noticed a new command called fswatch (monitors file modification changes):
Find New Commands in Linux
Now let’s find out the description and location of the fswatch command using following different ways in Linux.
1. whatis Command
whatis is used to display one-line manual page descriptions of the command name (such as fswatch in the command below) you enter as an argument.
If the description is too long some parts are trimmed of by default, use the
-l flag to show a complete description.
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