Comment out

If you outcomment a line in a script or configuration file, you set it inactive. Scripts and configuration files typically allow you to write a comment if the line starts with a #. The line is ignored then. If you do not want to delete a line (maybe to be able to add it again), you just use this feature and add a # as the first character into the line.

As an example, let's take /etc/xinet.d/vnc. In the following example, the line disabling this service has been outcommented, thus the service will be active: service vnc1 {        #disable        = yes socket_type    = stream protocol       = tcp wait           = no         user            = nobody server         = /usr/bin/Xvnc server_args    = -SecurityTypes None -inetd -once -query localhost -geometry 1024x768 -depth 16 type           = UNLISTED port           = 5901 }