UNIX ADMINISTRATION COMMANDS

createuser [username]

createuser rich

This script command creates a user account for rich after prompting for a password, options,

and permissions

One may also manually edit /etc/passwd and create the home directory

chmod [ugoa][-+=][rwx] <filename>

User, Group, Other, All; remove, add, change to; Read, Write, eXecute

chmod ### <filename>

User, Group, Other; 4=read, 2=write, 1=execute

chmod 775 myscript

Allows everyone to read and execute myscript; user and group can write.

chown [option] <owner>[,[<group>]] <filename>

chown rich myscript

Changes owner for myscript to rich

/etc/group

Each entry is <group> : [<password>] : <group ID> : <users>

ckcs::104:rgehlbach,lewis,rich

Adding this line creates a group called ckcs with users rgehlbach, lewis, and rich

chgrp [option] <group> <filename>

chgrp ckcs myscript

Changes group for myscript to ckcs