how to read the package of redhat linux

Question

nspluginwrapper-1.4.4-1.el6_3.x86_64

i have question on

1.4.4-1.el6_3

how to read it was it the 1.4.4-1 mean , is it 1.4.4.1 or something else

also on

el6_3 mean el6.3 or not

Answer 1

nspluginwrapper-1.4.4-1.el6_3.x86_64 can be split as:

• nspluginwrapper : short package name
• 1.4.4 : package version as provided by original open source maintainer (not by distro maintainer).
• 1 : package build revision (provided by distro). This mostly differs if distro has applied some patches to make this software work better under this distro. Increases for any new revision.
• el6_3 : distro id
• x86_64 : architecture. maybe i686 (32-bit x86), x86_64 (64-bit x86), some others and also noarch (package is not arch dependent, will work on any arch).