What are some examples of using chmod in Linux?

What are some examples of using chmod in Linux?

The chmod command in Linux is used to change the file permissions. For example, chmod 755 filename gives the owner full permissions and read/execute permissions to others.

Can you explain what the numbers mean in chmod 755?

Sure! The numbers represent permissions: 7 means read, write, and execute for the owner; 5 means read and execute for the group; and 5 means read and execute for others.

What about using symbolic notation instead of numbers?

You can use symbolic notation like chmod u+rwx,g+rx,o+rx filename which means add read, write, and execute for the user, and read and execute for group and others.

Are there any risks with changing permissions?

Yes, changing permissions can expose sensitive files if not done carefully. Always ensure you understand the implications of the permissions you set.