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mathematica 11 mac os catalina issue fix

Apple imac Catalina OS issue fix it..   Apple has latest macOS Catalina 10.15, and most of users would like to install the newest macOS on their Mac desktop Laptop. some of users are are suffering from many annoying Catalina problems. One common macOS Catalina problem that people have encountered is that macOS 10.15 fails to download,…

Linux Cent OS

fix unable to lock the administration directory (/var/lib/dpkg/) is another process using it

How to”Fix” unable to lock the administration directory (/var/lib/dpkg/) is another process using it on Ubuntu  If you are facing this kind of error “unable to lock the administration directory (/var/lib/dpkg/) is another process using it” on linux Ubuntu and looking for solution to fix it then you can just follow few easy steps to…