In Debian system, if you want to uninstall the software package without removing its dependencies, you can use the command sudo apt remove --no-remove packagename, which will retain all dependencies; 1. Use the --no-remove option to prevent automatic deletion of dependencies; 2. If the dependencies have been deleted by mistake, you can manually reinstall them through apt history check records; 3. Before uninstalling, you can use the --simulate or -s parameters to simulate operations to confirm the scope of impact; 4. For dependencies that need to be retained, you can use sudo apt install dependencyname to mark as manual installation.
Sometimes when you're cleaning up your system or trying to uninstall a specific package, you might find that the default uninstall command also tries to remove a bunch of dependencies. If you want to get rid of just the package and leave its dependencies behind, there's a straightforward way to do it — especially on Debian-based systems like Ubuntu.
The trick is to use apt with a specific flag that tells it not to remove dependencies automatically.
Use apt remove --no-remove to keep dependencies
By default, apt remove packagename may also remove packages that were installed as dependencies unless they're required by other software. To prevent that, you can add the --no-remove option:
sudo apt remove --no-remove packagename
This tells APT not to remove any dependencies, even if they were only pulled in by the package you're uninstalling. It's helpful if you installed something temporarily but want to keep related libraries or tools around.
Just be aware: this won't work if removing the package would break something else. In that case, APT will warn you and refuse to proceed.
What if you already removed it?
If you've already uninstalled the package using the regular method and noticed that it took some dependencies with it, you can try reinstalling those dependencies manually if needed. Just run:
-
sudo apt install dependency-package-name
You'll need to know which ones were removed, though. One way to check is by looking at the APT history:
apt history
That shows what was removed along with the main package. From there, you can pick out the dependencies you still need and reinstall them.
Double-check what will be removed
Before running any removal command, it's always good to see what's going to happen. You can simulate the action with:
sudo apt remove --simulate packagename
Or, more briefly:
sudo apt -s remove packagename
This shows you a list of packages that would be removed without actually making any changes. It's especially useful if you're unsure whether important dependencies will go with it.
Also, remember that some packages are marked as "automatically installed" (because they were pulled in as dependencies), and they tend to get removed more easily. If you want to keep them, make sure to mark them as manually installed:
sudo apt install dependencyname
Doing that tells APT you want to keep it around regardless of what depends on it.
That's basically how you remove a package without pulling out its dependencies. The key is using the right flags and double-checking what gets affected. Not complicated, but definitely worth knowing if you're managing a system where keeping certain libraries matters.
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