Limiting the number of open files using the ulimit command.
Cedric is a RHEL Sysadmin at Google. He administers a RHEL server, RHEL_Server_1097B with only two users: his account (cedric.bolager@google.com) and his colleague's…
Running programs in the foreground or the background
Branford is a master tenor saxophonist by night, and a RHEL Syadmin at Google by day. He is teaching a class for 25…
bash loops and renaming files
Andreas is a RHEL Sysadmin working in his home directory in bash on his RHEL server. His home directory: /home/andreas/ His home directory…
Discpline and good habits
Rex wants to become the best GNU/Linux System Administrator in the world. What are the 4 most important good habits and rituals that…
granular permissions
What GNU/Linux commands can be used to change permissions granularly? In GNU/Linux, there are several commands and utilities that can be used to…
chmod command
Kobie is a RHEL System Administrator at Google. He is studying for his LFCS exam. He wants to master the chmod command. Please…