updates

Author: breezy-codes

_toc.yml

@@ -7,6 +7,7 @@ parts:
   - caption: "General"
     numbered: false
     chapters:
+      - file: cheat-sheets/linux.md
       - file: cheat-sheets/Markdown.md
       - file: cheat-sheets/nmap.md
       - file: cheat-sheets/grep-commands.md

cheat-sheets/linux.md

@@ -0,0 +1,297 @@
+# Linux Commands Cheat Sheet
+
+## File and Directory Management
+
+### Navigation
+
+- Change directory:  
+   `cd /path/to/directory`
+- Go to the home directory:  
+   `cd ~`
+- Go to the previous directory:  
+   `cd -`
+- List files and directories:  
+   `ls`
+- List detailed file info:  
+   `ls -l`
+- List hidden files:  
+   `ls -a`
+
+### File Operations
+
+- Copy files:  
+   `cp source destination`
+- Copy directories:  
+   `cp -r source_dir destination_dir`
+- Move or rename files:  
+   `mv source destination`
+- Delete files:  
+   `rm file.txt`
+- Delete directories:  
+   `rm -r directory_name`
+- Create a new file:  
+   `touch file.txt`
+- Create a new directory:  
+   `mkdir directory_name`
+- Remove an empty directory:  
+   `rmdir directory_name`
+
+---
+
+## File Viewing and Editing
+
+### Viewing Files
+
+- Display file content:  
+   `cat file.txt`
+- View file content one page at a time:  
+   `less file.txt`
+- Display the first 10 lines of a file:  
+   `head file.txt`
+- Display the last 10 lines of a file:  
+   `tail file.txt`
+- Follow a file in real-time:  
+   `tail -f file.txt`
+
+### Editing Files
+
+- Edit files using `nano`:  
+   `nano file.txt`
+- Edit files using `vim`:  
+   `vim file.txt`
+
+---
+
+## File Permissions and Ownership
+
+### Changing Permissions
+
+- Change file permissions (e.g., `rwx`):  
+   `chmod 755 file.txt`
+- Change directory permissions recursively:  
+   `chmod -R 755 directory_name`
+
+### Changing Ownership
+
+- Change file owner:  
+   `chown user file.txt`
+- Change file owner and group:  
+   `chown user:group file.txt`
+- Change ownership recursively:  
+   `chown -R user:group directory_name`
+
+---
+
+## Searching and Finding Files
+
+### File Search
+
+- Search for a file by name:  
+   `find /path -name "filename"`
+- Search for files by extension:  
+   `find /path -name "*.txt"`
+
+### Content Search
+
+- Search for text in a file:  
+   `grep 'pattern' file.txt`
+- Search recursively in a directory:  
+   `grep -r 'pattern' /path`
+
+---
+
+## Disk and System Information
+
+### Disk Usage
+
+- Check disk space usage:  
+   `df -h`
+- Check directory or file size:  
+   `du -sh /path`
+
+### System Information
+
+- Display system information:  
+   `uname -a`
+- Show current logged-in users:  
+   `who`
+- Display memory usage:  
+   `free -h`
+- Show running processes:  
+   `top`
+- Display detailed process list:  
+   `ps aux`
+
+---
+
+## Networking
+
+### Network Configuration
+
+- Display IP address:  
+   `ip addr`
+- Test network connectivity:  
+   `ping example.com`
+- Display open network ports:  
+   `netstat -tuln`
+
+### File Transfers
+
+- Copy files between systems:  
+   `scp file.txt user@remote:/path`
+- Download files using `wget`:  
+   `wget http://example.com/file.zip`
+
+---
+
+## Process Management
+
+### Process Operations
+
+- Show current running processes:  
+   `ps aux`
+- Kill a process by PID:  
+   `kill PID`
+- Kill a process by name:  
+   `pkill process_name`
+
+### Background and Foreground
+
+- Run a command in the background:  
+   `command &`
+- List background jobs:  
+   `jobs`
+- Bring a background job to the foreground:  
+   `fg %job_number`
+
+---
+
+## User Management
+
+### User and Group Operations
+
+- Add a new user:  
+   `sudo useradd username`
+- Change a user's password:  
+   `sudo passwd username`
+- Add a user to a group:  
+   `sudo usermod -aG groupname username`
+
+### Switching Users
+
+- Switch to another user:  
+   `su - username`
+- Execute a command as another user:  
+   `sudo command`
+
+---
+
+## Archiving and Compression
+
+### Creating Archives
+
+- Create a `.tar` archive:  
+   `tar -cvf archive.tar file_or_directory`
+- Create a compressed `.tar.gz` archive:  
+   `tar -czvf archive.tar.gz file_or_directory`
+
+### Extracting Archives
+
+- Extract a `.tar` archive:  
+   `tar -xvf archive.tar`
+- Extract a `.tar.gz` archive:  
+   `tar -xzvf archive.tar.gz`
+
+---
+
+## Package Management
+
+### Debian/Ubuntu (APT)
+
+- Update package list:  
+   `sudo apt update`
+- Upgrade all packages:  
+   `sudo apt upgrade`
+- Install a package:  
+   `sudo apt install package_name`
+- Remove a package:  
+   `sudo apt remove package_name`
+
+### Red Hat/CentOS (YUM/DNF)
+
+- Install a package:  
+   `sudo yum install package_name`  
+   `sudo dnf install package_name`
+- Remove a package:  
+   `sudo yum remove package_name`  
+   `sudo dnf remove package_name`
+
+### Arch Linux (Pacman)
+
+- Update package list:  
+   `sudo pacman -Sy`
+- Upgrade all packages:
+- Install a package:  
+   `sudo pacman -S package_name`
+- Remove a package:
+- `sudo pacman -R package_name`
+- Search for a package:  
+   `pacman -Ss search_term`
+
+### Arch Linux (yay)
+
+- Install a package:  
+   `yay -S package_name`
+- Remove a package:
+   `yay -R package_name`
+- Search for a package:  
+   `yay -Ss search_term`
+
+---
+
+## Shell Scripting
+
+### Variables and Scripts
+
+- Assign a variable:  
+   `variable_name="value"`
+- Print a variable:  
+   `echo $variable_name`
+- Run a shell script:  
+   `bash script.sh`
+
+### Loops and Conditions
+
+- Example `for` loop:
+
+  ```bash
+  for i in {1..5}; do
+      echo $i
+  done
+  ```
+
+- Example `if` statement:
+
+  ```bash
+  if [ condition ]; then
+      echo "Condition met"
+  fi
+  ```
+
+---
+
+## Miscellaneous
+
+### History and Aliases
+
+- Show command history:  
+   `history`
+- Create a command alias:  
+   `alias ll='ls -la'`
+
+### Permissions and Ownership
+
+- Display current working directory:  
+   `pwd`
+- Change the hostname:  
+   `sudo hostname new_hostname`