unlink, “/etc/resolv.conf” and X server
Perl, unlink is used to remove files from directory,syntax “unlink list_of_files”.
/etc/resolv.conf keeps the DNS setting.
Read documents filter out its “#” lines and space lines:
# cat file_name | grep -v # | grep -v ‘^$’
If you have experience in the world of personal computer networking, the term server brings to mind a multiprocessor monster with multiple gigabytes of RAM and disk storage that sits behind glass walls in an air-conditioned machine room and holds all your company’s vital data.
A client is a computer, such as the workstation on your desk, that you use to access and process the information stored on the server.
X-server manages our graphics hardware in a manner similar to how a database server would manage the database, here shared resources is screen, keyboard and mouse.
“This can be a time-consuming and frustrating process.”
Refresh-rate: this is the rate at which the image you see on your screen is redrawn. The refresh rate is expressed in terms of Hertz(HZ). A refresh rate of 60Hz means that an image is redrawn 60 times in one second.
Start the XFree86 X-Server by typing the command:
# X &
# xterm -display localhost:0.0 &
Ctrl+Alt+Backspace send X server a signal that causes it to instantly terminate.
Experiment with this to avoid having to reboot your machine