Frequently Asked Questions

Question: How to convert cer files to p7b files ? Answer: Lets download the  cer  files  from the  server openssl s_client -connect mijn.ing.nl:443 -showcerts CONNECTED(00000003) depth=3...

In Ubuntu/Linux Mint you can  install softwares from Software Centers or via PPA/Synaptic . If any software is not available in deb/software center/ppa and...

In this post i will show you how to set up Python scripting for Apache. Note that I assume that you have already set...

Question : How  to   solve  error ImportError: No module named trac.web.modpython_frontend Answer: You are getting this error because  apache may not be able to create the Python...

Question: How to install Python 3.x in Ubuntu, Fedora &  Centos? Answer: 1- To be able to compile Python Source, you will need few packages. Open...

Question : How to add FTP Users For VSFTP  Server ? Answer : Before you can add any users to VSFTP, the user must already exist...

Question: Suspend VS hibernate in Linux, what is the difference? Answer: Suspend stops operation of all applications and system state is saved in RAM, the machine...

Question: How to Monitor Realtime Network Traffic in Ubuntu / Debian /Mint  ? Answer: What you need to do is to install ifstat tool,  from terminal...

Question: what are the sendmail configuration files  ? Answer : Sendmail uses the following configuration files: /etc/mail/access                      sendmail access database file /etc/mail/aliases...

Question : I got this error  Log in CMS  (Joomla  and  Wordpress) : PHP Warning: Module 'PDO' already loaded in Unknown on line 0. Solution: First...

Recently, CLI is mostly used by Linux/Unix administrators since most popular linux distros come with a complete set of GUI applications that make the...

Log files are very valuable files for Linux system security. In Linux, almost all log files are stored in ‘/var/log‘ directory. . . . .  Common Linux log files...

If you prefer that the NumLock is activated automatically when you turn on your computer, then follow the instructions in this post. Install the package ...

Question : How to disable server signature using .htaccess or by editing apache config file? Answer: Attackers can use server signature to their advantage when performing...

Question : How to Convert your RHEL 6.x to Centos 6.x ? Answer : If you are using RHEL 6.x and you want to move...

 Question : How to turn off password expiration under Linux? Answer: . . . . .   The  Encrypted password list is stored  in /etc/shadow file cat /etc/shadow   root:$1$dkk&Iw6zvgu$P3ms0o5GiXv66BzNXe0:15294:0:99999:7:: This is the...

Question: How do I remove a third party boot loader from the MBR    Answer: Erase the first 512 bytes of the harddrive to remove the...

Question: How to  fix this Compiling issue in Nagios ? /usr/bin/install: omitting directory `includes/rss/extlib' /usr/bin/install: omitting directory `includes/rss/htdocs' /usr/bin/install: omitting directory `includes/rss/scripts' make: *** Error 1 make:...