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Sub-query The inner query execute first, the outer query deprnds on inner query output. Correlated sub-query The outer query execute first, the inner query deprnds on outer query result. A correlated sub-query is where the
Below steps are validated on Red Hat Enterprise Linux 7. Auto-logout functionality is mostly used to logout a user if the session is idle for a while. Using this article you should be able to
In my last article I shared the steps to protect GRUB2 from booting kernel without password in Linux With Red Hat Enterprise Linux 7 they have introduced a network device naming scheme wherein it provides
There are multiple types of network which can be configured in Oracle VirtualBox, so before going ahead you must be clear on your requirement. Here let me give you a brief overview of the type
We use Linux for many reasons. Security is just one of them, but it’s undeniable that Linux is more secure than other operating systems. Securing our data is especially important to us, since our devices
I have already written an article with step by step instructions and examples to configure a PXE based boot server using http/ftp, dhcp and tftp services to automate kickstart based installation. In this article I
I/O scheduling controls how input/output operations will be submitted to storage. There are various algorithms which can be used depending upon the end user requirement.These algorithms can help to reduce seek operations and can prioritise
There are many processes in Linux which run on single core while many will switch between different core depending upon the availability. With below two methods you can find if a process is continuously running