"I've witness countless new users complaining about
inoperative programs/ items due to a bad permission set on their
part. Hopefully this will enlighten some of our inexperienced
"Two programs essential in the command-line arsenal help change
file permissions and ownership. They are chmod and chown. Chmod
lets you change the access permissions to individual files,
directories & devices. Chown (change ownership) lets you change
a file(s) to another owner."
"Chmod is used to change the access permissions of a named file,
directory, device or program. These permissions can be set to three
different classes, user, group, and the world. Each of these
classes of user (owner, group and world) can have permission to
read, write or execute the file, depending on your preference."
"Chown is pretty straightforward. It allows you to change
ownership. It's also used in conjunction with Chmod, as you should
know by the time you're done reading this guide."