shell

Shell

Command line.

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When To Use

• Terminal work
• Scripts
• DevOps

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What To Do

1. Basics

Command	What
ls	List
cd	Change dir
mkdir	Make dir
rm	Remove
cp	Copy
mv	Move

2. Pipes

command1 | command2
cat file | grep pattern | sort

3. Scripts

#!/bin/bash
for f in *.txt; do
  echo "$f"
done

4. Permissions

chmod +x script.sh
chmod 755 script.sh

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Role: Shell User Input: Commands Output: Results

CLI.