Root, Qubits & Qualia

HAProxy is a  load balancer for Redhat and Centos 7 and above. Yum install haproxy the config file to edit is /etc/haproxy/haproxy.config Sy...

Backing up the FACLs Many a times, the backup software may not copy the metadata related to the FACL on the files. In that case you may wan...

If you've just upgraded your linux distribution and you get the following error message when trying to start a VM using Vmware workstati...

lsof Command # lsof -u account | wc -l Displays the total number of open file handles in the specified account. # lsof -u account | gr...

This is sometimes required after a Kernel upgrade and the built in VMware player models update doesn't work. simply uninstalling and re...

zip -er filename.zip   -e = encrypt -r = recursively eg zip -er documents.zip documents_folder or zip -er document.zip document.d...

some_program.sh; echo "some_program.sh finished running" | mail -s "Job Status Update" username@gmail.com This can a...

" Consciousness determines existence " " Nothing exists in the physical world unless a conscious mind observes it " ...

Connect to vCenter Server using the vSphere Client Right-click the virtual machine and click Edit Settings. Click Network adapter and note...

Reset the permissions of  all installed RPM packages for p in $(rpm -qa); do rpm --setperms $p; done for p in $(rpm -qa); do rpm --setugi...

press Alt + F2, type " r " then Enter . This will work so long the shell isn't unusable. if Shell is unusable then try Ct...

Alt f2 then type killall plasmashell Alt f2 then type kstart plasmashell

 Fedora/CentOS7 / RHEL 7  are completely systemd based, So on these versions of Linux we need to use systemd commands to disable firewalld a...

Easy backout of yum patching yum install screen Dependencies Resolved =================================================================...

http://www.cyberciti.biz/faq/rhel-redhat-centos-7-change-hostname-command/

insert CD rOM mount -t iso9660 /dev/cdrom /mnt/cdrom vim /etc/yum.repos/cdrom.repo add the following lines [dvd-source] name=RH...

start ,search and type:- cmd, right click on returned cmd.exe and select "run as administrator" at the prompt type:- net localgr...

When you search in Vim the results are highlighted if the highlighting colour is wrong you cannot read the text. There are two sets of de...

Below are a couple of examples on how you can use dig. These are common examples and include queries such as mail exchange lookup, address ...

A null, also known as Blackhole, is a routing table entry that discards a matching packet without sending it further. It is mainly used for ...