General Information

YellowDog Update Manager (yum) .

Checklist

• Enterprise Linux (Red Hat based)

View Installed Kernels

rpm -q kernel

Remove Old Kernels

1. Install yum utils

   yum install yum-utils

2. Cleanup, set count to how many old kernels you want to remain

   package-cleanup --oldkernels --count=3

3. Set number of installed kernels as a persistent setting

   vim /etc/yum.conf
    
   installonly_limit=3