slock - simple screen locker
simple screen locker utility for X.

In order to build slock you need the Xlib header files.

Edit to match your local setup (slock is installed into
the /usr/local namespace by default).

Afterwards enter the following command to build and install slock
(if necessary as root):

    make clean install

Running slock
Simply invoke the 'slock' command. To get out of it, enter your password.