Understand and modify file permissions with `chmod`

[Will513r]

Ticket: Understand and Modify File Permissions with chmod

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Summary

Learn how to understand and modify file permissions using the chmod command in a Unix-like operating system.

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Description

• Objective: Gain a comprehensive understanding of file permissions and how to modify them using the chmod command.

• Scope:

  • Understanding file permission basics (Read, Write, Execute)
  • The syntax and primary usage of chmod
  • Different ways to specify permissions (numeric and symbolic modes)
  • Best practices and potential pitfalls

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Learning Tasks

1. File Permission Basics:

   • Learn about the three basic types of permissions: Read (r), Write (w), and Execute (x).

2. Syntax and Basic Usage of chmod:

   • Understand the syntax and how to use chmod to change permissions on a file or directory.

3. Specify Permissions:

   • Explore how to specify permissions using both numeric and symbolic modes.

4. Best Practices and Warnings:

   • Familiarize yourself with the responsible use of chmod, including potential pitfalls and how to avoid them.

5. Hands-on Practice:

   • Exercise 1: Create a text file and change its permissions to read-only.
   • Exercise 2: Create a script file and make it executable.
   • Exercise 3: Use symbolic mode to add write permission to a group for a specific file.
   • Exercise 4: Revert a file to its default permissions.

6. Troubleshooting:

   • Discover common issues users may face while working with chmod and learn solutions for them.

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Learning Goals

• Accurately read and set file permissions using chmod.
• Utilize both numeric and symbolic modes to specify permissions.
• Understand the importance and implications of different permissions.

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Priority

• Medium

[Will513r]

Read is a permission for just reading the file. Write means you can create and modify the file and execute means you can run the file.

[Will513r]

using numeric mode you can assign read and write to a numerical value and symbolic mode allows you to uae letters. chmod is a way to protect information from being overwritten or seen by people it doesn't need to be seen by.