≡ Menu

append

BASH: Prepend A Text / Lines To a File

I am a new Unix system user with a bash as a default shell. I can append text to a file using >> operator but how do I prepend a text to a file? I want the opposite operation of >>. How can I prepend some data to a text file?
[click to continue…]

Restrict SSH Access Using tcpd (TCPWrapper) on Linux or Unix

How do I use tcpd on a Linux to restrict ssh access?
[click to continue…]