Linux Learning notes-the RPM command for package management

Rpm

RPM is a very useful package management Manager in Linux, it has the functions of installing, uninstalling, upgrading, querying, verifying, database maintaining and so on.

Here are the various features of RPM:

Installation:

RPM {-i|--install} [install-options] package_file ...

-V: Detailed display of the installation process

-VV: Relative-V more detailed

-H: Show packages to manage execution progress; Each # represents 2% progress

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installation process

There are additional options

[Install-options]

--test: Test installation, but do not actually perform the installation process; dry run mode;

--nodeps: Ignoring dependencies;

--replacepkgs: Reinstall;

--nosignature: Do not check the legitimacy of the source;

--nodigest: does not check package integrity;

--noscipts: Do not execute Package script fragment;

%pre: Pre-installation;--nopre

%post: Post-installation script;--nopost

%preun: Unloading the forefoot;--nopreun

%postun: Post-uninstall script;--nopostun

Upgrade:

RPM {-u|--upgrade} [install-options] package_file ...

RPM {-f|--freshen} [install-options] package_file ...

where the-u option is used, an older version of the package is installed, then "Upgrade", or "install" if there is no legacy package;

When the-f option is used, an older version of the package is installed, and the upgrade is not performed if there is no legacy package;

--oldpackage: This option is a downgrade operation;

--force: If you add this option to force the upgrade

Inquire:

RPM {-q|--query} [select-options] [query-options]

[Select-options] Query selection related options

-A: View all packages

-F: To see which package installs the specified file for build

-p/path/to/package_file: Query operation for the package files that have not been installed;

--whatprovides CAPABILITY: Query The specified CAPABILITY is provided by which package;

--whatrequires CAPABILITY: The query specifies which packet the CAPABILITY is dependent on;

[Query-options]

--changelog: Query rpm Package for Changlog

-C: Querying the program's configuration file

-D: Querying the program's documentation

-i:information

-L: View all files generated after the installation of the specified package;

--scripts: Script fragment with package comes in

-r: Query the capability that the specified package depends on;

--provides: Lists the capability provided by the specified package;

Querying the details of a specified program

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Query which package installation builds the specified file

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Query for all files generated by the specified package installation

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Querying the program's documentation

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Unloading:

RPM {-e|--erase} [--allmatches] [--nodeps] [--noscripts] [--notriggers] [--test] package_name ...

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Check:

RPM {-v|--verify} [select-options] [verify-options]

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After modifying a file, verify the result

The meaning of each field is

S file Size differs

M Mode differs (includes permissions and file type)

5 Digest (formerly MD5 sum) differs

D Device Major/minor number mismatch

L Readlink (2) path mismatch

U User ownership differs

G Group ownership differs

T MTime differs

P capabilities differ

Check the legitimacy of the package to import the required public key, then check the validity of the package

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Database rebuild:

RPM {--INITDB|--REBUILDDB}

INITDB: Initialization

If the database does not exist beforehand, it is created; otherwise, no action is taken;

REBUILDDB: Rebuilding

Re-create the database directly, regardless of the current presence or not;

Linux Learning notes-the RPM command for package management