Setting UNIX permissions
To change permissions for an item, use the chmod command. The syntax of the command is as follows:
chmod securitygroup [changetype] [permission] [file or directory]
The options for each item in the command are described below.
Securitygroup (The person or group whose permission you are changing.)
- u - user
- g - group
- o - other
- all - all
Changetype (Whether you are adding or subtracting the permission.)
- "+" add permission
- "-" subtract permission
Permission (The permission you are changing.)
- r - read
- w - write
- x - execute
File or directory: The name of the file or directory to change.
Examples:
chmod go-w myfile Removes write access for group and others for the file myfile.
chmod go+rw myfile1 myfile2 Adds read and write access for group and others for files myfile1 and myfile2.
chmod ugo+rwx myfile1 Adds read, write, and execute for everyone for myfile1.
For more information on changing UNIX permissions, refer to the chmod man page by entering: man chmod