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This article mainly explains "linux how to judge whether pcre is installed", the content of the explanation is simple and clear, easy to learn and understand, now please follow the editor's train of thought slowly in depth, together to study and learn "linux how to judge whether pcre is installed" bar!

In linux, you can use the "rpm-qa pcre" command to determine whether pcre is installed; the rpm command is specially used to manage each suite. After using this command, if the version information of pcre appears in the result, it means that pcre has been installed, and if there is no version information, it means that pcre is not installed.

The operating environment of this tutorial: linux7.3 system, Dell G3 computer.

How does linux determine whether pcre is installed?

Check to see if linux has a pcre environment installed

[root@WeChat sbin] # rpm-qa pcrepcre-8.32-17.el7.x86_64pcre-8.32-17.el7.i686

When you see the version of pcre, it means it is installed, otherwise it is not installed.

Examples are as follows:

1. Connect to the corresponding linux host and enter the state of the linux command line waiting for the input of shell instructions.

2. Enter the shell instruction under the linux command line: rpm-qa pcre.

3, the keyboard press the "enter key" to run the shell instruction, at this time you will see the version of pcre, indicating that it has been installed, otherwise it is not installed.

Thank you for your reading, the above is the content of "linux how to judge whether pcre is installed". After the study of this article, I believe you have a deeper understanding of how linux judges whether pcre is installed or not, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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