Detailed explanation of how to upgrade software package versions under Linux

In the Linux environment, you want to check whether a certain software (package) is installed.

If installed using rpm package, use rpm -qa | grep "name of software or package".

If installed using yum, run yum list installed | grep “name of software or package”.

Upgrade the package version.

We often encounter situations where we depend on other versions of packages (usually newer versions), and we need to upgrade the packages.

1. Install the new package after uninstalling.

First, check whether you have installed the software according to the method mentioned at the beginning of the article to check whether the software package is installed. If not, find the path and use the wget command to download the package and install it directly.

If installed, the version of the software you installed will be displayed. When writing the uninstall command later, just copy the package name.

use

rpm -e software.rpm (uninstall);

rpm -e --nodeps package name (force uninstall)

rpm –U software.rpm (installation in upgrade mode);

After uninstalling, you can install it using rpm -ivh package name.

2. Update the software package using yum

（1）List all the software that can be updated

Command: yum check-update

(2) Install all updated software

Command: yum update

(3) Install only the specified software

Command: yum install <package_name>

(4) Update only the specified software

Command: yum update <package_name>

(5) Install the software package using YUM

Command: yum install <package_name>

(6) Use YUM to delete the software package

Command: yum remove <package_name>

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