How Do I Fix “crontab: command not found”

by admin on August 22, 2014

After I ordered new VPS (CentOS 6.x) on DigitalOcean (SSD Cloud VPS). I found that crontab is not installed on server, When I try to execute “crontab -e” command, I got following error

# crontab -e
-bash: crontab: command not found

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How To Install CentOS on UEFI systems

July 23, 2014

Yesterday, I’m tried to install CentOS 6.4 to my new server IBM X3650 M2 with Minimal CentOS 6.4. My Server has two SAS 15K RPM 146GB and setting up RAID 1 Mode.

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How to fix “An error occurred while installing nokogiri (”

May 29, 2014

Today, When I’m running bundle install and I’m having this error Gem files will remain installed in /usr/local/lib/ruby/gems/1.9.1/gems/nokogiri- for inspection. Results logged to /usr/local/lib/ruby/gems/1.9.1/gems/nokogiri An error occurred while installing nokogiri (, and Bundler cannot continue. Make sure that `gem install nokogiri -v ’′` succeeds before bundling.

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How To Compile/ Install New Kernel 3.13.6 In CentOS 6.5

March 20, 2014

Here in this post I will explain how to compile and install Linux Kernel 3.13.6 in CentOS 6.5. Linux Kernel 3.3.16 stable latest version has released 2014-03-07 and you can download it from

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How To Fix NIC Link is Down On Centos 6.5 After Upgrade

March 14, 2014

Since upgrading a CentOS 6.4 with a SuperMicro X8SIE-F/X9SCL board with Intel 82574L NIC to 2.6.32-431.el6.x86_64 and rebooting, I have been having consistent NIC failures where the NIC shuts down permanently until a soft reboot is performed.

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How To Fix Apache Error “(28)No space left on device”

December 22, 2013

On some occasions apache server will just fail, and become crashed, failing to restart with an error message like

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