Linux / UNIX - Display the permissions of a file

To display the permissions of a file in Linux or Unix, you can use the ls command with the -l option.

For example, to display the permissions of a file called myfile.txt, you would run:

ls -l myfile.txt

This will display the permissions of myfile.txt in a long format, which includes the file's owner, group, and permissions.

Here's an example of the output you might see:

-rw-r--r-- 1 root root 0 Oct 31 15:12 myfile.txt

The first group of characters represents the file's permissions. In this example, the - indicates that it is a regular file, and the rw- indicates that the owner has read and write permissions. The r-- indicates that group members have read-only permissions, and the r-- indicates that all other users have read-only permissions.

The next group of characters shows the file's owner (root) and group (also root). The final two numbers indicate the file's size in bytes and the date it was last modified.

You can also use the stat command to display more detailed information about the file's permissions and other attributes.