Ermin Kreponic's Course for CentOS and Red Hat Linux - RHCSA

Create a Red Hat virtual machine part 1 as part of Ermin Kreponic's course for CentOS and Red Hat Linux RHCSA.

Install Red Hat Enterprise Linux in VirtualBox, select language and desktop environment, enable disk encryption, configure partitioning and network, and create the RandomGuy user during setup.

Learn how to dual boot Red Hat Linux and Windows 8, covering setup steps and compatibility considerations in this part 1 guide.

Master basic Linux command line navigation with cd, ls, and pwd, including root and home paths, tab completion, and moving through directories with . and ..

Learn to use man pages for command details, and compare find and locate with updatedb, noting case sensitivity and root access.

Use the chown command to change a file's owner and group, with verbose and recursive options. The lecture shows updating test123 from RandomGuy:RandomGuy to root:root.

Learn yum basics for CentOS and Red Hat Linux, including update, upgrade, search, install, reinstall, remove packages, view info, and filter results with grep across repositories.

Learn to use rpm to install, query, and erase packages on Red Hat-based systems, verify installations, and manage .rpm files from trusted sources.

Explore the Red Hat exam scope and hands-on skills. Learn shell usage, essential tools, file systems, local storage management, and security topics including firewall with iptables and SELinux configurations.

Explore globbing in the Linux shell using wildcards, asterisks, question marks, ranges, and negation. Apply patterns to match beginnings, endings, and contained characters, with case sensitivity and script automation.

Learn how standard input, output, and error work and master redirecting and appending outputs to files or to /dev/null for Bash scripting.

Master input-output redirections in Linux by redirecting standard error to standard output, piping commands, and filtering outputs for log files and errors with ps, awk, and rev.

Master practical vim editing basics, including entering insert mode, saving and exiting with w and wq, and using delete, yank, and paste with dd, yy, and p.

Learn to search within Vim using / for forward and ? for backward patterns, jump to line ends with $, and join or undo changes as you edit.

Learn to search and replace in vim with range commands (1,$ or %), practice pattern matching and substitution syntax, and apply global and ignore-case options.

Master vim by combining commands with cat, grep, and egrep to extract lines and delete ranges or patterns using regular expressions, then undo and save.

Explore the Linux root file system architecture and navigate core directories such as bin, dev, etc, home, lib, usr, var, and proc, learning that everything is a file.

Hard links are different names for the same file. Soft links are path-based references; the lecture shows creating one with ln -s and how removing the original affects access.

Explore backups, recovery, and compression in Linux using tar. Learn to preserve permissions, manage destinations, and automate efficient backups.

Learn to uncompress tar.gz backups, extract them into a designated folder, and verify contents with tar -tvf before restoring stored files.

Master tar archive creation, compare uncompressed and compressed tarballs, and assess bzip2, gzip, and zip performance for backups, recovery, and storage efficiency.

Create a cron job to run a bash script at a chosen frequency, such as every minute. Tag files with date-based names and set proper permissions.

Learn how to edit and schedule cron jobs for a specific user, comment out lines for notes, and troubleshoot with logs using crontab, crond restart, and tail -f.

Master crontabs to schedule tasks using minutes and hours or shortcuts like @reboot and @monthly. Learn cron basics, including cron.allow, cron.deny, and a daemon checked every minute.

Create and manage users with useradd, set and expire passwords using passwd, and configure home directories, system accounts, and account expiration in Linux.

Learn how to create groups with groupadd, assign users to primary and secondary groups with usermod, and manage group membership, deletion with groupdel, and verification using id and /etc/group.

Learn to configure linux networking using the ip command instead of ifconfig. Discover how to view addresses, interfaces, and routes with ip addr show, ip link, and ip route show.

Learn to manage network configurations with network manager, exploring non-persistent and permanent settings, using ip addr commands, editing ifcfg scripts, and restarting NetworkManager to apply static ip and dns configurations.

Learn to manage networks with network manager, nmcli and nmtui, configure interfaces, edit connections, and verify connectivity using ping, nslookup, dig, and nmap; includes DHCP, DNS, gateway, and troubleshooting.