What is chmod and how do I use it?
Chmod is a command in Unix-like systems that changes the file permissions. It stands for 'change mode'.
Can you explain the permission levels in chmod?
Sure! Chmod uses three types of permissions: read (r), write (w), and execute (x). These can be set for the owner, group, and others.
How do I set permissions using chmod?
You can set permissions using symbolic or numeric modes. For example, 'chmod 755 filename' sets read, write, and execute for the owner, and read and execute for group and others.
What do the numbers in chmod mean?
The numbers represent permissions: 4 for read, 2 for write, and 1 for execute. You add them up for each user category.
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