How do I configure Linux system firewall to allow incoming VNC connections?
{ 6 comments }
July 2009
How do I install and configure MRTG under Fedora Linux or CentOS Linux v5.x server to monitor the traffic load on network-links including routers?
{ 7 comments }
I‘m getting lots of spam from few IPs. How do I find the owner of an IP address and report them to concern parties?
{ 10 comments }
If var is defined AND NOT EMPTY, use var, otherwise set a default variable under Bash. For e.g. my script needs a parameter for output variable. It can be text or html. I set it as follows in my script
output=$1 # either text or html
However, sometime user forget to pass the parameter to my shell script and my enter logic fails. So how do I set default value to text, if no parameter passed?
{ 6 comments }
I‘ve central e-mail server. Other servers does not need to operate as a mail server. How do I configure Sendmail as submission-only e-mail server (mail client) under CentOS / Fedora / RHEL / Debian Linux / UNIX like operating systems?
{ 7 comments }
