Solved RPM Installation: can’t create transaction lock on /var/lib/rpm/__db.000 in Redhat and CentOS

What if you come across transaction lock errors while installing RPM? What is the quickest solution?

Solution:

Continue reading “Solved RPM Installation: can’t create transaction lock on /var/lib/rpm/__db.000 in Redhat and CentOS”

Configuring JAVA_HOME in Windows, Linux , MAC OS

JAVA_HOME is environment variable which point to an installed JDK location. Many software requires that we set JAVA_HOME to point to the installation directory. In this post lets see how we can configure JAVA_HOME in difference OS. Continue reading “Configuring JAVA_HOME in Windows, Linux , MAC OS”

Managing multiple ssh keys CentOS / Linux based OS or Mac OS

If you are admin or developer you have encountered ssh in your life. Ssh stands for Secure Shell which let you login to pc / server remotely and securely. It replaces telnet, rlogin etc… which does the same but does not provide security. Continue reading “Managing multiple ssh keys CentOS / Linux based OS or Mac OS”