POSIX
Otas is a RHEL Sysadmin at Lockheed Martin. She has been assigned to teach an incoming class of 50 interns about the history…
Manage running processes with commands like kill, killall, and pkill.
Rhonda is a RHEL Sysdamin at Google. She is studying for her LFCS exam. Please give her command examples to help her to…
Monitor system processes using commands like ps, top, and htop.
Jorge is studying for his LFCS exam on his RHEL Server. He wants to master ps, top, and htop: Monitor system processes using…
/etc/sysctl.conf
Please fully describe the /etc/sysctl.conf file. The /etc/sysctl.conf file is a configuration file in RHEL (Red Hat Enterprise Linux) and many other Linux…
Persistently changing kernel parameters across reboots
Please give 10 examples of persistently changing kernel parameters on a RHEL system. The kernel paramemter changes should survive across reboots. Assumptions: To…
Implement file system security practices, such as regular backups and file integrity checks. Understand and configure basic firewall settings (iptables, ufw).
Context: Generic GNU/Linux certification objective. Implement file system security practices, such as regular backups and file integrity checks. Understand and configure basic firewall…