Remove a program completely.

hack3rcon · 12-19-2017, 10:11 AM

Hello.
I'm using Debian 8.9 x64 and installed a program by "Synaptic" but when I remove it by "Synaptic" then dependencies not removed. For example, I installed "3cxpbx" and removed it but below dependencies are exist:

Code:

$ sudo apt-cache depends 3cxpbx
3cxpbx
  Depends: libc6
  Depends: libstdc++6
  Depends: postgresql
  Depends: nginx
    nginx-extras
    nginx-full
    nginx-light
  Depends: rsync
    rsync:i386
  Depends: libunwind8
  Depends: libcurl3
  Depends: libssl1.0.0
  Depends: sudo
    sudo-ldap
  Depends: libsystemd0
  Depends: psmisc
    psmisc:i386
  Depends: util-linux
    util-linux:i386
  Depends: libspandsp2
  Depends: unattended-upgrades
  Depends: dnsutils
    knot-dnsutils
  Depends: libgdiplus
  Depends: tcpdump
    tcpdump:i386
  Depends: virt-what
  Depends: libicu52
  Conflicts: libresiprocate-1.10
  Conflicts: libresiprocate-1.10:i386
  Conflicts: apache2
  Conflicts: apache2:i386

I know some of above dependencies are mandatory and used by other programs, But I never need "nginx".

Any idea?

Thank you.

suicidaleggroll · 12-19-2017, 10:21 AM

apt has an "auto remove" keyword that will remove any packages deemed no longer necessary for reasons such as this. You should use it with caution though, for example it has no idea if you've built up a program from source that requires package A, and may subsequently toss package A because it doesn't think it's required anymore, breaking your compiled program.

hazel · 12-19-2017, 10:54 AM

There's also a useful command called deborphan, which will list libraries, etc that no longer have anything dependent on them.

ondoho · 12-19-2017, 01:23 PM

the best & safest solution is to ALWAYS use 'apt-get autoremove' after uninstalling or upgrading.
(and it will never remove packages that were explicitly installed, only as dependencies)

Timothy Miller · 12-19-2017, 02:16 PM

Also you may want to use the --purge when removing and autoremoving to also get rid of config files to completely get rid of everything associated with it.

Ztcoracat · 12-19-2017, 06:34 PM

Code:

sudo apt-get –purge remove (name of program)

hydrurga · 12-19-2017, 07:43 PM

My usual uninstall command is:

Code:

sudo apt-get --purge autoremove packagename

This command, despite how it may appear, removes the package, purges its configuration files, and then autoremoves any auto-installed dependencies of not only that package but also any such dependencies that are marked as outstanding from previous package uninstallations (i.e. it is the equivalent of purging a package followed by issuing a general sudo apt-get autoremove).

This covers all bases except, of course, for the removal of any package-related personal configuration files (usually dot files) in your home directory, which is up to you to do if you so desire.

AwesomeMachine · 12-20-2017, 05:29 PM

Every so often I run:

Code:

deborphan | dpkg --purge $1

Every once in a while it removes something I need, so I have to reinstall it.

hack3rcon · 12-24-2017, 07:29 AM

Thank you, But "sudo apt-get --purge autoremove packagename == Mark for Complete Removal" ? I guess it is not!!!

wpeckham · 12-24-2017, 07:36 AM

Quote:

Originally Posted by hack3rcon

Thank you, But "sudo apt-get --purge autoremove packagename == Mark for Complete Removal" ? I guess it is not!!!

The command given in the earlier post does not "mark" anything, it REMOVES the target, and pretty much totally.
Was that not what you wanted?

rnturn · 12-24-2017, 09:48 AM

Quote:

Originally Posted by hack3rcon

[snip]
For example, I installed "3cxpbx" and removed it but below dependencies are exist:

Code:

$ sudo apt-cache depends 3cxpbx
3cxpbx
  Depends: libc6
  Depends: libstdc++6
  Depends: postgresql   <==<< Careful!
  Depends: nginx
[snip]

Unless you are dead certain that you're the only user of the system, I'd be careful about automatically removing something like a database. Someone else may have begun using it and would surely be upset to find their data gone or inaccessible. (PostgreSQL is also one to be wary of automatically upgrading. Some upgrades require an export-all-databases/upgrade/import-all-databases process and you may not realize that without reading the release notes beforehand.)

hack3rcon · 12-25-2017, 08:06 AM

Quote:

Originally Posted by wpeckham

The command given in the earlier post does not "mark" anything, it REMOVES the target, and pretty much totally.
Was that not what you wanted?

I installed the application and when I removed it then some dependencies existed. For example, I never installed "Nginx" and "3cxpbx" installed it but after removed it, "Nginx" existed.

hack3rcon · 12-25-2017, 08:07 AM

Quote:

Originally Posted by rnturn

Unless you are dead certain that you're the only user of the system, I'd be careful about automatically removing something like a database. Someone else may have begun using it and would surely be upset to find their data gone or inaccessible. (PostgreSQL is also one to be wary of automatically upgrading. Some upgrades require an export-all-databases/upgrade/import-all-databases process and you may not realize that without reading the release notes beforehand.)

"3cxpbx" installed "PostgreSQL". What does "upgrade" mean? Is you mean OS upgrade?

_roman_ · 12-25-2017, 08:27 AM

Most likely the term upgrade means to install a newer version of a package with the distribution package manager.

stolen from the web:

Quote:

Linux Distribution Basics: Rolling Releases vs. Standard Releases. Linux distributions tend to use two different types of release cycles: standard releases and rolling releases. Some people swear by rolling releases to have the latest software, while others like standard releases for being more stable and tested.

Those standard releases just update every package at a certain point.

IT is a matter of discussion if you consider it an os upgrade although they just update every package than instead of updating the packages when they are available.

hydrurga · 12-25-2017, 05:35 PM

Quote:

Originally Posted by hack3rcon

I installed the application and when I removed it then some dependencies existed. For example, I never installed "Nginx" and "3cxpbx" installed it but after removed it, "Nginx" existed.

Please run apt autoremove.

If any packages such as nginx exist after that then do not remove them unless you know *exactly* what you are doing, because the above command will have removed all automatically-installed dependencies that are no longer required by any other packages. Any remaining dependencies will probably be required.