RPM MANAGEMENT TIPS

REBUILD THE RPM FROM SRPM

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The pre-requisite packages required are ---

[user@linux ~]$yum groupinstall "Development Tools" 

[user@linux ~]$yum install yum-utils

OR

you can install only rpm-build.For CentOS most SRPMs targetted to be rebuilt on CentOS also need certain rpmbuild build macros and helper scripts, which are contained in package: redhat-rpm-config

[user@linux ~]$yum install redhat-rpm-config

[user@linux ~]$yum install rpm-build

The quickest way to rebuild the SRPM is to use the rpmbuild --rebuild command. This command will unpack the SRPM file into the specfile and the source files, and then it will build the RPM from the instructions on the specfile

[user@host ~]$ rpmbuild --rebuild /tmp/mypackage-1.0.0-1.src.rpm

If no error occurs, you can find mypackage-1.0.0-1.i386.rpm file under the ~/rpmbuild/RPMS/<architecture of your system> directory (for 64 bit it is x84_64 if 32 bit then it is i386). For more details read here

CHECK WHAT PACKET OWNS A PARTICULAR FILE

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[user@host~]$rpm -qf filename

[user@host~]$rpm -qf /usr/bin/crontab

cronie-1.4.4-7.el6.x86_64

CHECK WHAT CONFIGURATION FILE EXISTS FOR A PACKAGE

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[user@host~]$rpm -qc packagename

CHECK IF THE FILES INSTALLED BY A PACKAGE ARE STILL IN THE SAME STATE AS THEY WERE WHEN INSTALLED

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[user@host~]$rpm -qs packagename

This command will display all of the files installed by the package with a notation of "normal," "replaced," "not installed" and so on.