Check if the software is installed in linux

1. If the rpm package is installed, you can use rpm -qa to see it. If you want to find out whether a certain software package is installed, use rpm -qa | grep "the name of the software or package"

rpm -qa | grep perl

2. Installed with deb package, you can use dpkg -l to see it. If you are looking for a specified software package, use dpkg -l | grep "the name of the software or package"

dpkg -l | grep perl
-bash: dpkg: command not found

3. If it is installed by yum method, you can use yum list installed to find it. If you are looking for a specified package, use yum list installed | grep "Software name or package name"

yum list installed | grep perl

Recommended tutorial: linux tutorial

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