On the third Saturday in September each year, people all over the world celebrate Software Freedom Day. It's a day when free software developers and users raise awareness in their local community of the benefits that software freedoms bring.
After registering redhat linux system for rhn, yum update command returned "No Packages marked for Update" # yum updateLoaded plugins: downloadonly, securitySetting up Update ProcessNo Packages marked for Update
Find and replace feature is always handy. It can turn into a torture when it comes to change or delete a simple constant string in a text file. There is a handy tool in linux for doing these kind of tihngs. Actually sed is not a text editor but it is used outside of the text file to make changes.