How to use which Command in Linux system

This article will explain in detail how to use the which command in the Linux system. The content of the article is of high quality, so the editor shares it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

In Linux, the function of the which command is to search for the location of a system command in the path specified by the PATH variable and return the first search result. Its usage is "which [file...]", and its parameters are "- n", "- p", "- w" and "- V".

The Linux which command is used to find files.

The which command looks for files that match the criteria in the directory set by the environment variable $PATH.

Which syntax

Which [file...]

Which parameter

-n specifies the length of the file name, which must be greater than or equal to the longest file name of all files.

The-p parameter is the same as the-n parameter, but here the path to the file is included.

-w specifies the width of the field on output.

-V displays version information.

Which instance

Use the directive "which" to view the absolute path of the directive "bash" and enter the following command:

$which bash

After the above instruction is executed, the output information is as follows:

/ bin/bash # bash executable absolute path about the use of which commands in the Linux system is shared here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.