Useful tips for everyday
How does multiprocessing system work? On a multiprocessor machine, each processor and RAM is connected through the system bus. Hence the system bus is the…
What is Texinfo Ubuntu? Texinfo is a documentation system that uses a single source file to produce both on-line information and printed output. . Using…
What is var run utmp? /var/run/utmp – Contains currently logged in users. /var/log/wtmp – Contains all current and past logins and additional information about system…
Could not open connection to your authentication agent SSH-add? You can just restart agent by eval ssh-agent -s and add older key using ssh-add ~/.…
How can I clear the clipboard? Delete clipboard history using Settings Open Settings. Click on System. Click on Clipboard. Under the “Clear clipboard data” section,…
What is update java alternatives? update-java-alternatives is a program to update alternatives for jre/jdk installations. update-alternatives is a symbolic link management system for linux (I’m…
Why does my monitor screen randomly go black? Bad PSU: The Power Supply Unit is known to be the most common culprit of making your…
How do you do a graceful shutdown? There are two ways to perform a graceful shut down. Via GUI: Click on Device tab > Setup…
What is DNS record priority? Priority – This acts the same way as the MX Level / preference in the MX record. The lower the…
Is there busy waiting in semaphore? The main disadvantage of the semaphore is that it requires busy waiting. Busy waiting wastes CPU cycles that some…