A while back, I started experimenting with Ubuntu after playing with Fedora. I decided to jump to Ubuntu and needed to move data from the Fedora-managed logical volume to Ubuntu. Here's what I...

Check SSL validity and details 1. Get complete available details of an SSL certificate openssl x509 -text -in ssl.cert 2. Who issued the certificate. openssl x509 -noout...

While installing dmidecode I got the followng error. Error: Package: 1: -2.12-0.1.el4.rf.x86_64 (rpmforge)Requires: kernel-utils Solution :- wget...

How to check Motherboard/BIOS/Processor/Chassis details from commandline dmidecode is a tool for dumping a computer’s DMI (some say SMBIOS) table contents in a human-readable format. This...

How to create a partition size larger than 2TB on Linux Parted is a GNU utility and used to create, manipulate and delete the hard disk partitions. Select the drive that you need to create #...

How to fetch a url with curl or wget silently Cron jobs need quiet operation; if a command generates output, you’ll get an email from cron with the command output. So if you want to fetch a...

Folow the steps to upgrade OpenSSL in CentOS 6 servermv /usr/bin/openssl /usr/bin/openssl.backupcd /usr/srcwget https://www.openssl.org/source/openssl-1.0.1g.tar.gztar -zxf...

How to whitelist Mod_security rules for a domain on a CPanel server First off-all, you need to find the Rule ID. You can find it from the apache error log (grep for your IP) or if you have CSF...

IMAPCopy IMAPCopy is a small command line tool to copy messages for multiple users from one imap server to another root@cPanel1 [~]# cd /opt/root@cPanel1 [/opt]#...

Keyboard shortcuts for editing Ctrl + a => Return to the start of the command you’re typingCtrl + e => Go to the end of the command you’re typingCtrl + u => Cut everything...

Network monitoring on Linux This post mentions some linux command line tools that can be used to monitor the network usage. These tools monitor the traffic flowing through network interfaces and...

OpenSSL  Urgent Action Required There is a vulnerability present within OpenSSL that can allow sensitive information that is stored in the server memory to be disclosed to an attacker. A...

R1soft agent installation  Install dependency packages [root@vps ~]# yum install gcc glibc-devel glibc-headers First you need to check the server kernel Version [root@vps ~]#...

what is RSZDT mean ? PROCESS STATE CODES -different values that the s, stat and state output specifiers(header “STAT” or “S”) will display to describe the state of a...

Snoopy logger is a powerful utility which makes the admin work more easy by providing a log of commands executed via shell. It logs each and every users shell command executions to...

Ruby : Cipher is not a module (TypeError) After re-install the puppet client I got an error while restart the puppet. Error:-=-=-=-= Starting puppet: /usr/lib/ruby/1.8/openssl/cipher.rb:22:...

Install tmwatchftp://ftp.muug.mb.ca/mirror/centos/6.5/os/x86_64/Packages/tmpwatch-2.9.16-4.el6.x86_64.rpmthen run  /usr/sbin/tmpwatch -am 1 /tmp/nginx_clientthen add cron filelike this0 */1 *...

I got an error while checking yum list. Upon checking I found that “libxml2″ 32 and 64bit packages were installed in the server. error while loading shared libraries: libxml2.so.2:...