fix: bunch of vibed edits to fix vibed edits

1 files changed, 32 insertions, 32 deletions

diff --git a/linux-command-line/shell-basics/index.md b/linux-command-line/shell-basics/index.md
index c0cf75b..f84c802 100644
--- a/linux-command-line/shell-basics/index.md
+++ b/linux-command-line/shell-basics/index.md
@@ -4,7 +4,7 @@ title: Shell Basics
 
 # Shell Basics
 
-The shell is your primary interface to a Linux system. Everything — file management, process control, system administration — flows through it. Before graphical tools, before IDEs, there was the shell. Mastering it is non-negotiable.
+The shell is your primary interface to a Linux system. Everything (file management, process control, system administration) flows through it. Before graphical tools, before IDEs, there was the shell. Mastering it is non-negotiable.
 
 **Prerequisites:** None
 **Estimated time:** 4-6 hours of practice
@@ -16,10 +16,10 @@ The shell is your primary interface to a Linux system. Everything — file manag
 A shell is a program that reads commands from your input and executes them. It's both a **command interpreter** (runs programs) and a **programming language** (scripts).
 
 Common shells:
-- **bash** — Bourne Again Shell, the default on most Linux systems
-- **zsh** — Extended bash with better completion and prompting
-- **sh** — POSIX shell, the lowest common denominator
-- **fish** — Friendly interactive shell, not POSIX-compatible
+- **bash**: Bourne Again Shell, the default on most Linux systems
+- **zsh**: Extended bash with better completion and prompting
+- **sh**: POSIX shell, the lowest common denominator
+- **fish**: Friendly interactive shell, not POSIX-compatible
 
 When you open a terminal, you're running a **terminal emulator** (alacritty, kitty, xterm) which hosts a **shell process**. The terminal draws pixels; the shell interprets commands.
 
@@ -40,12 +40,12 @@ cat /etc/shells
 
 ## Navigating the Filesystem
 
-Linux has a single filesystem tree rooted at `/`. Everything is a file — devices, processes, sockets.
+Linux has a single filesystem tree rooted at `/`. Everything is a file: devices, processes, sockets.
 
 ### Essential Navigation Commands
 
 ```bash
-pwd                     # Print working directory — where you are
+pwd                     # Print working directory: where you are
 ls                      # List files in current directory
 ls -la                  # Long format, show hidden files (dotfiles)
 ls -lh                  # Human-readable sizes (K, M, G)
@@ -107,7 +107,7 @@ mv file.txt ~/Documents/        # Move to another directory
 # Delete
 rm file.txt                     # Remove file (no trash, no undo)
 rm -r mydir/                    # Remove directory recursively
-rm -ri mydir/                   # Interactive — asks before each deletion
+rm -ri mydir/                   # Interactive: asks before each deletion
 rmdir emptydir/                 # Remove only if empty
 ```
 
@@ -125,11 +125,11 @@ wc -l file.txt                  # Count lines
 ```
 
 `less` is your friend. Use it for anything longer than a screenful. Key bindings inside `less`:
-- `Space` / `b` — page down / up
-- `/pattern` — search forward
-- `n` / `N` — next / previous search match
-- `g` / `G` — go to top / bottom
-- `q` — quit
+- `Space` / `b`: page down / up
+- `/pattern`: search forward
+- `n` / `N`: next / previous search match
+- `g` / `G`: go to top / bottom
+- `q`: quit
 
 ---
 
@@ -147,7 +147,7 @@ ls -l file.txt
 # └───────────── file type: - = regular, d = directory, l = symlink
 ```
 
-### chmod — Change Permissions
+### chmod: Change Permissions
 
 ```bash
 # Symbolic notation
@@ -156,9 +156,9 @@ chmod go-w file.txt            # Remove write for group and others
 chmod a+r file.txt             # Add read for all
 
 # Octal notation (most common)
-chmod 755 script.sh            # rwxr-xr-x — owner full, others read+execute
-chmod 644 file.txt             # rw-r--r-- — owner read+write, others read
-chmod 600 secret.key           # rw------- — owner only
+chmod 755 script.sh            # rwxr-xr-x: owner full, others read+execute
+chmod 644 file.txt             # rw-r--r--: owner read+write, others read
+chmod 600 secret.key           # rw-------: owner only
 ```
 
 **Octal cheat sheet:** r=4, w=2, x=1. Add them up per group.
@@ -168,7 +168,7 @@ chmod 600 secret.key           # rw------- — owner only
 - `4` = r-- (4)
 - `0` = --- (0)
 
-### chown — Change Ownership
+### chown: Change Ownership
 
 ```bash
 chown ahmed file.txt            # Change owner
@@ -189,9 +189,9 @@ This is where the shell gets powerful. The Unix philosophy: small programs that
 ### Redirection
 
 Every process has three standard streams:
-- **stdin** (0) — input
-- **stdout** (1) — normal output
-- **stderr** (2) — error output
+- **stdin** (0): input
+- **stdout** (1): normal output
+- **stderr** (2): error output
 
 ```bash
 # Redirect stdout to a file
@@ -231,18 +231,18 @@ ps aux | grep nginx | grep -v grep
 cat /etc/passwd | cut -d: -f1 | sort | head -5
 ```
 
-> **Useless use of cat:** `cat file | grep pattern` can be written as `grep pattern file`. But in pipelines with many stages, starting with `cat` can be clearer. Don't stress about it early on — clarity matters more than micro-optimization.
+> **Useless use of cat:** `cat file | grep pattern` can be written as `grep pattern file`. But in pipelines with many stages, starting with `cat` can be clearer. Don't stress about it early on: clarity matters more than micro-optimization.
 
 ### Command Substitution
 
 Use the output of one command inside another:
 
 ```bash
-# Using $() — preferred
+# Using $(): preferred
 echo "Today is $(date +%Y-%m-%d)"
 files=$(ls *.txt)
 
-# Using backticks — older style, harder to nest
+# Using backticks: older style, harder to nest
 echo "Today is `date +%Y-%m-%d`"
 ```
 
@@ -282,10 +282,10 @@ apropos network         # Search man pages by keyword
 ```
 
 **Reading man pages:** The synopsis section uses conventions:
-- `[optional]` — square brackets mean optional
-- `REQUIRED` — caps or no brackets means required
-- `...` — can be repeated
-- `a | b` — choose one
+- `[optional]`: square brackets mean optional
+- `REQUIRED`: caps or no brackets means required
+- `...`: can be repeated
+- `a | b`: choose one
 
 ---
 
@@ -309,7 +309,7 @@ apropos network         # Search man pages by keyword
 
 ### Mini-Project
 
-**Build a quick reference card:** Create a file `~/cheatsheet.md` that contains the 20 commands you found most useful from this section, organized by category, with a one-line description and example for each. This is your cheatsheet — you'll extend it throughout the course.
+**Build a quick reference card:** Create a file `~/cheatsheet.md` that contains the 20 commands you found most useful from this section, organized by category, with a one-line description and example for each. This is your cheatsheet: you'll extend it throughout the course.
 
 ---
 
@@ -317,11 +317,11 @@ apropos network         # Search man pages by keyword
 
 - The shell is a command interpreter and a programming environment
 - Everything in Linux is a file, organized in a single tree from `/`
-- Permissions are the foundation of Linux security — understand `rwx` and octal
+- Permissions are the foundation of Linux security: understand `rwx` and octal
 - Pipes and redirection are the core of composing commands
-- `man` and `--help` are always available — read them first, search the web second
+- `man` and `--help` are always available: read them first, search the web second
 - Practice in a real terminal. Reading about commands is not the same as using them.
 
 ---
 
-**Next:** [File Management](../file-management/) — find, locate, tar, rsync, and more
+**Next:** [File Management](../file-management/): find, locate, tar, rsync, and more