I've recently installed an image editor, "ImageMagick" through Ubuntu Software.
Unfortunately it wasn't really what I needed so no need in keeping it around.
Trying to keep things clean, went on Terminal and "sudo apt purge imagemagick".
Operation was successful and terminal displayed the message that the package was removed.
After a reboot, to my surprise Imagemagick was still present in the app list and working.
Checked the Ubuntu Software Center and it still was displayed as installed.
Got on Terminal again and repeated the "sudo apt purge imagemagick" and got the message that the package wasn't installed.
Went back to Ubuntu Software Center where it still was displayed as being installed.
Hit the remove button and it was then removed.
What just happened? Were there two different installs? Doesn't "apt remove/autoremove/purge" has control over the whole system, including Sotware Center installations? How come do I remove a package manually and it still keeps on lingering over the system? How many more packages and trash do I have lingering over the system if things like this happen?
Thanks in advance to anyone who can clarify this.