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linux

How to use grep command in unix/linux

Grep example unix

Another app is currently holding the yum lock; waiting for it to exit...

From last few days trying My hands on fedora. 10, I must say its a cool distro. Recently I was trying to install some software through yum, but I constantly getting

Another app is currently holding the yum lock; waiting for it to exit...

error though I was not using ...