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How to Create & Execute Jar File in Linux

Java developers need to often create & execute JAR File in Linux. Here are the steps to run JAR file in Linux.

Sometimes you may need to copy column to another column in MySQL. Here are the steps to do it.

Sometimes you may need to add header to CSV file. Here is how to do it using sed or echo commands.

Sometimes you may need to set password for single user mode in Linux. Here are the steps to do it.

Sometimes you may need to list all virtual environments in Python. Here is how to do it.

Sometimes you may get ‘too many authentication failures’ SSH error in Linux. Here is how to fix it.

Sometimes you may need to downgrade software in Ubuntu. Here are the steps to do it in Linux.

Sometimes you may need to downgrade RHEL/CentOS to previous minor release. Here are the steps to do so.