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Linux Terminal Command

I will leave here some important basic linux terminal command that might be helpful during program installation and uninstallation process in Ubuntu.


When you want to know the available version of package name then execute following command

apt-cache policy packagename



When you want to install the specific version of package name then execute the following command

apt install packagename=version



When you want to pin the package name not get to update in future then do the following

In the following directory,
/etc/apt/preferences.d/

 Add the following content in the existing file,
package : program name
pin : version x.x.x*
pin-priority : 1000 
Note : pin-priority - This will prevent the program from the up-gradation.



When you want to know the recently installed package name then execute the following command

find /var/lib/dpkg/info/ -name \*.list -mtime -3 | sed 's#.list$##;s#.*/##'

This will show the list package name which has installed in last 3 hours. If you want to know before 3 hours then you can replace the 3 as your wish.

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