What is chmod Command?

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The chmod command in Linux adjusts file and directory permissions to control access.

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Understand Permission Numbers

Permissions are represented by numbers: 4 for read, 2 for write, and 1 for execute.

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Change File Permissions

Use chmod 755 file to set read, write, and execute permissions for users.

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Recursive Permission Changes

Modify permissions in all subdirectories with chmod -R 755 folder.

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Check Permissions After Changes

Verify updated permissions with the ls -l command to ensure accuracy.

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