RHCSA RedHat Certified System Admin EX-200

Install Rocky Linux 9.3 in VMware Workstation or Oracle VirtualBox from the DVD image, choosing the server with gui and following a guided installation.

Learn to navigate the Linux CLI with date and cal, access help via man and --help, and create and edit files using cat, nano, vim, and gedit.

Explore Linux help and manuals, using man pages and quick flags, then navigate directories with ls and cd, and create or edit files with cat, nano, vim, and gedit.

Create directories with mkdir, navigate and view with cd, ls, and pwd, and create files with nano. Copy and move files between directories with cp and mv.

Learn to use grep for filtering words and patterns across files with -i and -r, and use head, tail, and standard pipes for input, output, and error redirection.

Master linux file searching with find and locate, and learn how which and pwd reveal command locations and behaviors under normal and root privileges.

Explore hard links and symbolic links in Linux, learn how inode numbers identify files, and see how hard links persist after deletion of the original while symbolic links break.

Create and extract tar archives using tar with c, v, f flags to produce tarballs for backups, and compare gzip and bzip2 compression to optimize storage.

Create and manage Linux users and groups from the command line, assign passwords, place users in groups, and explore file and directory permissions with chmod and ownership.

Learn to manage file and directory permissions by creating accounts, sales, and HR directories, changing ownership and group, and using absolute and relative chmod to control access and backups.

Learn how to add a virtual extra hard disk, partition it with fdisk, format two partitions with ZFS, mount them to directories, verify with df, and persist via fstab.

Unmount and remove partitions on a Linux system by unmounting them, deleting the partitions, updating fstab, and verifying with lsblk and /proc/partitions before safely removing the disk.

Learn how to create and manage logical volume management using physical volumes, volume groups, and logical volumes. Extend storage by adding disks, resizing LV, and mounting the filesystem.

Unmount the logical volume, then remove the lv, vg, and pv in reverse order; update fstab, delete partitions with fdisk, verify with pvs and lvs, and reboot.

Explore Linux networking basics, including IPv4 and IPv6, IP classes, subnet masks, and gateways, and configure Red Hat IPs with nmcli and GUI tools, plus hosts and resolv.conf.

Configure firewalld on Red Hat Linux using CLI to manage zones and services, add or remove services, and reload for runtime and permanent changes.

Explore Linux process management by identifying processes with the ps command, controlling foreground and background tasks, and adjusting priorities with kill, top, and nice settings to optimize performance.

Install the Apache httpd web server on Rocky Linux, explore httpd.conf and modules, start and enable the httpd daemon, configure firewall rules, create a simple index.html, and verify with curl.