Thursday, June 26, 2014

grep or less for MAC address using regex

Easy enough:

grep -i '\([0-9A-F]\{2\}[:-]\)\{5\}\([0-9A-F]\{2\}\)' file.txt

Or less
less file

Thursday, January 9, 2014

What package contains this file or library? Use "yum provides" to find out

If you are trying to install an application which gives an error about a missing file you might be able to use yum to easily determine the package and install it.
Error ex:
error while loading shared libraries: cannot open shared object file: No such file or directory

One way to resolve this is by using the provides option in yum.

In a terminal, as root (or sudo), type yum provides then copy and paste the resulting package name into yum install _____.