unix linux

How do I find and replace (substitute) test using vi or vim text editor under UNIX / Linux / BSD or Apple OS X operating systems?

{ 26 comments }

When I try to ping other UNIX / Linux / BSD or MS-Windows servers in our network I get the following message:

TTL Expired In Transit

How do I fix this problem?

{ 1 comment }

Whenever I try to star my Apache 2 server under UNIX / Linux and get a warning as follows:

[warn] NameVirtualHost *:80 has no VirtualHosts

How do I fix this problem?

{ 16 comments }

How do I find symlink(s) under UNIX and Linux operating systems?

{ 25 comments }

How do I open the TCP or UDP ports under UNIX / Linux like operating systems?

{ 8 comments }

How do I find out disk usage under UNIX operating systems using GUI, CLI and Perl / shell programs?

{ 12 comments }

I have UNIX workstation and Linux server at work and Ubuntu desktop at home. It is recommended that I use ssh tunnel the VNC protocol for secure communication. How do I access my UNIX workstation desktop here at home over the Internet using ssh?

{ 3 comments }