Category: UNIX

RHEL Subscriptions

To be able to use YUM on an RHEL server you need to register it with the RedHat servers. NB: You can do this with a Developer account, which is free! First register the system # subscription-manager register Next attach a subscription # subscription-manager list –available | awk ‘/Pool/ { system (“subscription-manager attach –pool=”$3) }’ […]

Shell Redirect

Discard the output Sometimes you will need to execute a command, but you don’t want the output displayed on the screen. In such cases, you can discard the output by redirecting it to the file /dev/null − $ command > /dev/null Here command is the name of the command you want to execute. The file […]

Setgid

When set on a directory, Setting the setgid permission on a directory (e.g. “chmod g+s”) it causes new files and subdirectories created within it to inherit its group ID, rather than the primary group ID of the user who created the file (the owner ID is never affected, only the group ID).

Next Page »