I am a new Debian Linux v.7.x / Ubuntu Linux LTS user. How do I reinstall a package using apt-get command line?
The Advanced Packaging Tool (APT) works on both Debian / Ubuntu and it can handle the installation and removal of software. You need use apt-get command as follows to forcefully reinstall package. The syntax is:
apt-get –reinstall install PackageNameHere
apt-get –reinstall install Package1 Package2
The –reinstall option re-install packages that are already installed and at the newest version.
Pro tip: Backup configuration files before you reinstall packages. For example, if you are reinstalling nginx web server package, backup /etc/nginx/ with cp command i.e. mkdir /root/nginx.mmddyyyy/; cp -avr /etc/nginx/* /root/nginx.mmddyyy/
The following command will reinstall rsync package. Open a terminal and then type:
$ sudo apt-get –reinstall install rsync
# apt-get –reinstall install rsync
Fig.01: Debian / Ubuntu Linux reinstall a package using apt-get command
If above method failed for you, try the following syntax. Make sure you backup config file before typing the following commands. Please note that the –purge option is identical to remove except that packages are removed and purged including any configuration files are deleted too.
sudo apt-get –purge remove package1
sudo apt-get install package1
See man pages for more info – apt-get(8),dpkg(1),cp(1)