chmod
The chmod command is used to change the permissions on a file. Let's start our discussion of chmod with the listing of the file sort shown earlier:
$ ls -l sort
-rwxr-x--x 1 marty users 120 Jul 26 10:20 sort
Figure 21-5 shows a breakdown of the permissions on sort.
Figure 21-5. Permissions of File sort
You have very little control over the type of file defined. You do, however, have a great deal of control over the permissions of this file if it belongs to you. The chmod command is used to change the permissions on a file or directory. If you are the owner of the file, you can have a field day changing the permissions on the file.
There ...
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