How to verify file permissions?

To verify file permissions in Linux, you can use the ls command with the -l option. Here’s how to do it:

1. Open the terminal.

2. Use the ls -l command followed by the filename or directory name. The syntax is:

   ls -l filename

   or for a directory:

   ls -ld directoryname

3. Example: To check the permissions of a file named example.txt, you would run:

   ls -l example.txt

4. Output Explanation: The output will look something like this:

   -rw-r--r-- 1 user group 0 Oct 25 12:34 example.txt

   • The first column shows the file type and permissions.
   • The first character indicates the file type (- for a regular file, d for a directory).
   • The next nine characters represent the permissions in three groups (owner, group, others):
     • The first three characters show the owner's permissions.
     • The next three show the group's permissions.
     • The last three show permissions for others.

5. To check permissions for all files in a directory, simply run:

   ls -l

This will display the permissions for all files and directories in the current directory.