3-in-1 Linux Power bundle: ChatGPT, Apache & Shell Scripting

Explore what a web server is, how the HTTP protocol delivers static and dynamic content. Review Apache, Nginx, and IIS, and note their usage statistics.

Discover how Http works, how web servers and clients exchange requests and responses, and why Apache Http server offers free, fast, secure, and customizable web hosting.

Install and verify the Apache httpd web server on CentOS 7.4 using yum, then start and enable the service. Check its status and confirm accessibility with the server IP.

Learn to configure Apache to start automatically on boot by enabling the httpd service with systemctl and confirming the status shows enabled.

Configure the Apache web server firewall on CentOS 7 to allow http and https traffic from anywhere, then verify access by loading the server's public IP in a browser.

Learn how to locate the Apache installation by listing httpd options, and inspect the httpd directory for modules, configuration files, templates, the 404 not found message, and the man page.

Explore the Apache directory structure and locate the httpd binary, inspect the loaded and compiled modules, verify the configuration with httpd -t, and understand the symlinks for logs and modules.

Explore the Apache main configuration file httpd.conf and its directives, including server root, listening port, document root, directory rules, and logging. Learn to edit and restart httpd to apply changes.

Learn to create your first website on the Apache web server by setting up the courses valley dot net site, configuring a virtual host, and validating with an index.html file.

Create a name-based virtual host for academia.cloud by configuring Apache in conf.d, setting document root to /var/www/academia, and validating syntax before reloading httpd.

Set up a port-based virtual host in Apache by creating a document root, configuring port 8080, and enabling firewall access, then test the configuration.

Configure Apache alias to map a URL path to a different directory, enabling the alias module and testing with httpd commands to verify syntax and access an image resource.

Learn to redirect URLs with Apache web server, using permanent, temporary, see other, and gone redirects. Configure redirect, test with curl, and verify 301, 302, 303, and 410 status codes.

Explore the Apache error log and access log, with note on log levels and virtual hosts. Learn to read error messages and block suspicious IPs to protect your server.

Analyze the Apache access log to read client IP, date/time, request, status, size, referral, and user agent, including 404 and 400 events.

Configure custom logs for apache virtual hosts by saving each website's access and error logs to separate files, define log formats (combined vs common), and verify with httpd commands.

Learn to configure log rotation with logrotate on Linux. Set daily rotation, size thresholds, compression, and automatic reload of the httpd service.

Secure an Apache server by hiding version information and tokens, disable directory listing, and turn off etags; verify changes with curl and restart the service.

Learn to run Apache as a non-privileged user and group Apache, set directory ownership to Apache, secure configuration directories, and disable trace http requests to harden the server.

Set up TLS/SSL for free on your Apache server using Let's Encrypt, renew every 90 days, and enable http to https redirection to secure data between server and client.

Learn how to secure an admin page with basic authentication in Apache by creating the admin directory, configuring the auth user file, and testing access with credentials.

secure urls with digest authentication by creating a digest file, configuring a mod directory in apache httpd, and validating user access with a browser.

Configure access control to allow only a specific ip to admin access on your apache server using directives like require ip and require not ip, then reload apache to test.

Configure http access authentication on Apache by editing conf.d/httpd conf, enabling htaccess reads under var/www/html, and setting AllowOverride AuthConfig, then restart Apache.

Configure user-side basic authentication using http access by creating a members directory, setting up .htaccess, generating and storing a htpasswd file, and verifying login via a browser.

install clamav on CentOS, configure SELinux, update antivirus databases with freshclam, and scan directories to move infected files to quarantine.

Learn to mitigate DDoS with mod_evasive by configuring rate limits, blocking offending IPs for a 10-minute period, and adding mailx alerts, with optional Cloudflare as a first line of defense.

Adjust httpd.conf to boost performance by tuning timeout and keepalive settings. Learn recommended values for heavy vs normal loads, including max keepalive requests, and how to apply them to httpd.conf.

Learn to adjust httpd.conf to improve web server performance by disabling extend status and hostname lookups. The lesson covers editing, saving, validating with httpd -t, and restarting the httpd service.

Analyze apache access log to identify top connecting IPs and their request patterns, assess potential ddos indicators, and block suspicious IPs via firewall to protect the web server.

Monitor web server traffic in real time with Apache Top, viewing live access logs for Apache and nginx, and analyze request details and status codes.

Master the command line basics, including the terminal prompt and using commands like ls to list directory contents. Grasp command syntax with options and arguments for effective Linux control.

Explore essential linux commands like ls, cd, touch, cp, mv, rm, nano, vi, cat, and echo to manage files and directories, practice creating, copying, renaming, editing, and printing content.

Master Linux file permissions in a multi-user environment by understanding owner, group, and others with read, write, and execute rights, using ls -l and chmod.

Create your first shell script by writing a text file of commands to automate tasks. Use nano to create the file, echo hello world, save, and run it with bash.

Learn to make a shell script executable by granting permissions with chmod, using the plus x flag, and running the script with ./hello.sh to print hello world.

Explore understanding the shebang line and how #!/bin/bash selects the interpreter for a script, with a practical example to edit, make executable, and run a bash script.

Discover how to use variables in shell scripting to store numbers, characters, strings, or commands. Define variables with no spaces around the equals sign and display values with echo.

Learn how command line arguments pass values to a script and how to access them with $0, $1, and $2. Run chmod +x and ./arguments.sh with hello and wallet.

Learn how to read user input in a shell script with the read command, store it in a variable, and echo a personalized welcome message.

Explore how to control script flow with if statements and conditions in shell scripting, using -eq for integer comparisons and practicing else and else if branches with variables.

Learn how to use bash case statements to test multiple conditions and execute different commands based on a parameter assigned to a vehicle variable, printing car, bike, or unknown vehicle.

Learn to use echo to display text and variables in shell scripts. Compare printf to echo for formatted output, using %s and %d and /n.

Learn to use the read command to obtain user input in shell scripts, store it in variables, echo greetings, and read multiple inputs like first and last name.

Learn to use grip (grep), awk, and sed for efficient text processing, including pattern searching, column extraction, and global substitution in text files.

Define and use shell scripting functions as blocks of reusable code, call them by name, and pass parameters to produce outputs like hello world or hello Turkey.

Explore how local and global variables behave in shell functions, showing that global variables are accessible everywhere while local variables stay inside the function. Learn to write efficient, error-free scripts.

Learn to use arrays in bash: define indexed and associative arrays, access elements by index or key, and print all pairs with echo and a for loop.

Learn to manage files and directories with essential linux commands such as ls, mkdir, cd, pwd, touch, cp, and rm, including viewing details with ls -l and validating paths.

Explore the Linux /dev, /proc, and /sys file systems, learning how /dev holds device files, /proc exposes per process data, and /sys provides kernel information.

Master Linux file permissions by understanding read, write, and execute access for owner, group, and others. View permissions with ls -l and modify them with chmod, using u+x when needed.

Learn practical linux shell script debugging using bash -x, set -x, set +x, and trap to catch signals like SIGINT and SIGTERM, enabling precise tracing and controlled debug flow.

Explore error handling in shell scripts by checking command exit status. Use $? and conditional prints, and control flow with set -e and set +e.

Explore signals and traps in shell scripting. Learn to detect signals with trap and run actions or cleanup commands when signals arrive, including sigint, sigkill, and sigstop.

Explore cron jobs and the at command for automating scheduled tasks. Learn how to set up a daily backup at 12 a.m. and a one-time run for a script.

Learn to schedule tasks with the at and cron utilities, including creating and managing cron jobs, crontab, at, and anacron, plus handling permissions and system downtime.

Automate linux system tasks with shell scripts, using apt-get update and upgrade with sudo, and schedule execution via crontab on the first day of each month.

Create a backup script that archives a source directory to a backup directory with a date-stamped tar.gz file, using source and destination variables.

Create a system monitoring script that reports host name, system uptime, memory usage with free -h, and disk usage with df -h, make it executable, and run the script.

Learn to write a shell script that adds or deletes Linux users using read prompts, an operation variable, and an if-else statement, with sudo adduser and sudo deluser commands.

Minimize security risks in shell scripting by sanitizing user inputs, preventing injection attacks, validating data, and using secure temporary files with mktemp and proper permissions.

Explore the bonus lecture guiding you through the instructor's website cloud.oracle.com, revealing course listings and offers. Learn about enrollment plans and a professional resume review service to boost interview readiness.