Under the Linux operating system, almost all software is installed, uninstalled and managed by RPM. The RPM is all called Redhat Package Manager, which is proposed by the Redhat company to manage software packages under Linux. When Linux is installed, almost all other modules are installed through RPM, except for a few core modules. RPM has five modes of operation: Installation, uninstall, upgrade, query, and authentication.
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RPM Installation operation
Command:
Rpm-i The package file name that needs to be installed
Examples are as follows:
Rpm-i example.rpm installation example.rpm package;
Rpm-iv example.rpm installs the example.rpm package and displays the file information that is being installed during the installation process;
RPM-IVH example.rpm installs the example.rpm package and displays the file information and installation progress during installation;
RPM Query Operations
Command:
Rpm-q ...
Additional query commands:
A query for all installed packages The following two additional commands are used to query the installation package information;
I display the installation package information;
L Displays the directories in which all files in the installation package are installed;
s displays all file status in the installation version and which directories are installed; The following two additional commands are used to specify whether the installation package or the installed file should be queried;
P Query is to install the package information;
F query is installed a file information;
Examples are as follows:
Rpm-qa | grep TOMCAT4 See if TOMCAT4 is installed;
RPM-QIP example.rpm View the EXAMPLE.RPM installation package information;
RPM-QIF/BIN/DF View the installation package information of the/BIN/DF file;
RPM-QLF/BIN/DF view the files in the installation package where the/BIN/DF files are installed in each directory;
RPM Uninstall operation
Command:
RPM-E installation packages that need to be uninstalled
Before uninstalling, you usually need to use the rpm-q ... command to identify the installation package name that needs to be uninstalled.
Examples are as follows:
RPM-E TOMCAT4 Uninstall TOMCAT4 Package
RPM Upgrade operation
Command:
Rpm-u packages that need to be upgraded
Examples are as follows:
RPM-UVH example.rpm Upgrade EXAMPLE.RPM Package
RPM Verification operation
Command:
Rpm-v the package that needs to be validated
Examples are as follows:
Rpm-vf/etc/tomcat4/tomcat4.conf
The output information is similar to the following:
S.5 ..... T c/etc/tomcat4/tomcat4.conf
Where S indicates that the file size has been modified, T indicates that the file date has been modified. For more information on verification, please refer to the RPM Help file: Man rpm
Other additional commands for RPM
--force force operation such as mandatory installation and deletion;
--requires shows the dependencies of the package;--nodeps ignores dependencies and continues to operate;