Make sure your product is affected
Linux and UNIX source software often comes with security and other patches. You can download them from Internet or project home page. There is a command called patch that apply a diff file or patch to an original source tree.
patch takes a patch file patchfile containing a difference listing produced by the diff program and applies those differences to one or more original files, producing patched versions. Normally the patched versions are put in place of the originals.
he following usage is most commonly used:
$ patch -p1 < {/path/to/patch/file}
To apply a patch, one could run the following command in a shell:
$ patch < /path/to/file
Patches can be undone, or reversed, with the '-R' option:
$ patch -R < /path/to/file
