Cybersecurity Analyst Pt 4 - SOC100 - Linux CLI, Bash, Scripting, Data Streams, Vim, Backup Tool
We're taking you from navigating the Windows start menu to triaging Tier 1 SOC Analyst tickets by live stream instructing every piece of content from the pay what you can (PWYC) 400+ hour SOC100 course series over 5 months. Recordings free, and course is minimum $19, suggested $29 with virtual machines provided and lab time.
Full course info 👉 https://www.leveleffect.com/soc100
Stream calendar 🗓️ https://docs.google.com/spreadsheets/...
Stream Details:
Class 4
Course: SOC100-1
Domain: Linux OS
Website: https://leveleffect.com
Discord: / discord
Twitch: / leveleffect
Newsletter & Blog: https://news.leveleffect.com/
00:00:06 - Greetings and introduction
00:04:15 - Introduction to Linux command line
00:06:12 - Opening Linux workstation and terminal
00:08:20 - Reviewing basic commands: ls, pwd, ls -al
00:10:17 - Using man pages and searching within them
00:14:08 - Using touch to create files
00:17:29 - Understanding cat command
00:20:35 - Redirecting output and appending to files
00:22:13 - Using Nano text editor
00:24:54 - Editing files with Nano
00:27:02 - Removing files and directories using rm and rm -r
00:33:48 - Chaining commands using semicolon and double ampersand
00:38:21 - Command line file administration summary
00:41:34 - Introduction to file permissions
00:44:11 - Understanding file permission notation
00:48:14 - Changing file permissions with chmod
00:54:37 - Using numerical values with chmod
00:59:44 - Changing permissions recursively with chmod -R
01:04:22 - Using symbolic notation with chmod (u/g/o)
01:31:03 - Resuming session after break
01:33:30 - Introduction to group permissions and adding users
01:35:01 - Using sudo and adding users (Bilbo and Gandalf)
01:38:43 - Creating groups with addgroup (Fellowship)
01:40:41 - Modifying user accounts with usermod
01:43:22 - Viewing group memberships with groups command
01:44:38 - Exploring /etc/passwd and /etc/shadow files
01:47:44 - Using grep to search within files
01:51:13 - Changing file ownership with chown
01:55:48 - Demonstrating group permissions with a secret message
02:02:15 - Summarizing group permissions and related commands
02:05:21 - Introduction to finding and searching files
02:08:09 - Using the find command with various options
02:11:04 - Using wildcards and case-insensitive searches with find
02:14:43 - Searching by file permissions with find
02:18:26 - Combining find with grep and xargs
02:25:30 - Demonstrating searching for passwords in log files
02:29:50 - Importance of advanced find commands for security
02:34:05 - Introduction to processes and /proc files
02:36:39 - Using top command to view processes
02:43:32 - Using ps command and grep to find processes
02:45:03 - Killing processes using kill command
02:48:13 - Understanding signals and kill -9
02:51:00 - Viewing memory and disk usage with free and df commands
02:53:32 - Exploring /proc directory and process information
03:18:36 - Introduction to command redirection and data streams
03:19:09 - Explaining standard input (stdin), standard output (stdout), and standard error (stderr)
03:20:00 - Demonstrating standard input and output with basic commands
03:21:29 - Importance of understanding data streams for error handling and security
03:22:09 - Redirecting standard output to a file
03:24:23 - Explaining that default redirection only captures standard output, not standard error
03:25:17 - Redirecting standard error to a file using 2
03:28:11 - Demonstrating how redirectors affect files even when there’s no standard output
03:29:50 - Discussing the implications of data streams in scripting and security
03:31:37 - Capturing user errors by redirecting standard error to a file
03:33:27 - Importance of data streams for troubleshooting and advanced exploits
03:34:46 - Questions from chat about appending and redirecting standard error
03:36:24 - Combining standard output and standard error into one file
03:38:02 - Combine stderr and stdout
03:39:39 - Introducing wc (word count) command and reading input
03:41:34 - Using “here documents” with cat and EOF to create multi-line input
03:43:35 - Demonstrating the use of EOF marker for multi-line input
03:47:49 - Combining data streams and redirecting both stdout and stderr
03:48:42 - Example of redirecting both stdout and stderr when using find command
03:51:06 - Explaining the importance of capturing both output and errors
03:51:43 - Planning to cover advanced scripting and vim in next session
03:52:45 - Deciding to take a break and continue in the next session
03:53:42 - Discussing scheduling the next session for the following day
03:57:04 - Introducing /dev/null as a way to discard unwanted output
03:58:17 - Using /dev/null to discard standard error while keeping standard output
03:59:46 - Recap of the day’s topics and importance of data streams
04:01:27 - Announcing the next session and wrap up
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