Is there a command or program that check the integrity of the installation files?

[linub]

or is not possible due to different installations(kernel,desktop environment,minimal vs full etc).

I’m asking because i deleted some packages after uninstalling a program without paying enough attention

i mean everything works for now,but i may have a hole in the roof or a missing brick.

[zbe]

@linub

i deleted some packages

Deleted how? There is pacman -Qk or -Qkk, consult manpages for more info. But if you uninstalled something, then you uninstalled it, nothing to check for.

[cscs]

@linub

Is there a command or program that check the integrity of the installation files?

This was asked recently;

Manjaro System repair / integrity check?

-Dkk will perform on the repos, what is available, not what you have. Something more like what OP is asking for might be pacman -Qkk | grep -v '0 altered files' Though I fear what this will mean for people looking at the output. Its likely there willl be ‘modified’ files or ‘mismatched time’ etc that is ignorable. Well, the single Dk pacman -Dk will report big goofs like missing dependencies… though that will likely only happen if someone did -Rdd manually.

Except …

@linub

because i deleted some packages after uninstalling a program without paying enough attention

Thats really a different question.
You dont need to verify package integrity.
You want to see which packages you removed.

You could look at something like

grep -i removed /var/log/pacman.log

Unless you used something like -Rdd then maybe you would want

pacman -Dk

Which regularly wont show much … but if you did remove with ‘force ignore dependency checks’ … -Dk will report missing deps.

[robin0800]

-Rdd does ignore dependencies but does not remove them.

[cscs]

…?..

Yeah … -d ignores deps. Double skips all.

   -d, --nodeps
       Skips dependency version checks. Package names are still checked. Normally, pacman will always check a package’s dependency fields to ensure that all dependencies are
       installed and there are no package conflicts in the system. Specify this option twice to skip all dependency checks.

In the context of a removal operation (-Rdd) that means dependencies are ignored during removal.

So instead of

$ sudo pacman -Rsn python
error: failed to prepare transaction (could not satisfy dependencies)
:: removing python breaks dependency 'python' required by amdonly-gaming-vulkan-mesa-layers
:: removing python breaks dependency 'python' required by dbus-python
:: removing python breaks dependency 'python' required by fwupd
:: removing python breaks dependency 'python' required by inkscape
:: removing python breaks dependency 'python' required by libixion
[...]

Something like

sudo pacman -Rdd python

Would work and python would be removed.

This is a special operation that would need to have been performed manually.

But if someone did do something like that … then

pacman -Dk

Would then report something like

$ pacman -Dk
error: missing 'python' dependency for 'dbus-python'
[...]

All of the above the reason for

@cscs

Unless you used something like -Rdd then maybe you would want

pacman -Dk

Which regularly wont show much … but if you did remove with ‘force ignore dependency checks’ … -Dk will report missing deps.

[robin0800]

You can also look for orphans after -Rdd if there are none, all the dependencies are still needed.

[cscs]

Orphans can be created by removal … but orphans are not the same thing.

If I removed python that does not make dbus-python an orphan … it just means python is missing, no orphan was created.

To print orphans;

pacman -Qdt

You can also print even more orphans by using the t flag twice.
Maybe they should have a special name … like step-orphans or something.
These are packages that would otherwise be considered orphans if not for optional dependencies.
Quote from man pacman

   -t, --unrequired
       Restrict or filter output to print only packages neither required nor optionally required by any currently installed package. Specify this option twice to include
       packages which are optionally, but not directly, required by another package.

So:

pacman -Qdtt

[robin0800]

@cscs

pacman -Qdt

Quite honestly I would never suggest someone uses -Rdd for python. If for a python problem I would use downgrade.

[cscs]

I didnt suggest anyone use -Rdd
The point was to answer the question as presented by OP…
Which itself is not very explanatory but speaks to them doing some kind of removal they wish they had not.
So responses and explanations pertain to that.
Like mine:

@cscs

This was asked recently;

-Dkk will perform on the repos, what is available, not what you have. Something more like what OP is asking for might be pacman -Qkk | grep -v ‘0 altered files’ Though I fear what this will mean for people looking at the output. Its likely there willl be ‘modified’ files or ‘mismatched time’ etc that is ignorable. +1 Well, the single Dk pacman -Dk will report big goofs like missing dependencies… though that will likely only happen if someone did -Rdd manually.

Except …

@linub

because i deleted some packages after uninstalling a program without paying enough attention

Thats really a different question.
You dont need to verify package integrity.
You want to see which packages you removed.

You could look at something like

grep -i removed /var/log/pacman.log

Unless you used something like -Rdd then maybe you would want

pacman -Dk

(then you made some statement about what -Rdd is, and I responded, then you mentioned orphans, so I explained more, then you say dont do removals like that … and now we are here)

But…

In case it needs saying for whatever reason.

No one should be using -Rdd unless they really really know what they are doing.

[linub]

this is what i needed:
grep -i removed /var/log/pacman.log
Thanks!

i should’ve said removed/uninstalled, not deleted.