uninstall libc6 package by dpkg
I have install "libc6_2.17-0ubuntu5.1_amd64.deb" on my ubuntu server 12.04. The orginal libc6 on system is 2.15. After install the package, I check it by:
ldd --version
it shows:
ldd (Ubuntu EGLIBC 2.15-0ubuntu10.5) 2.15
not change. Then I found I can not install anything which depends on libc6 by apt-get, it will reports:
The following packages have unmet dependencies:
libc-dev-bin : Depends: libc6 (< 2.16) but 2.17-0ubuntu5.1 is to be installed
libc6-dev : Depends: libc6 (= 2.15-0ubuntu10.5) but 2.17-0ubuntu5.1 is to be installed
libnih1 : PreDepends: libc6 (< 2.16) but 2.17-0ubuntu5.1 is to be installed
So I try to uninstall the debian package, first I check:
dpkg -l | grep libc6
ii libc6 2.17-0ubuntu5.1 Embedded GNU C Library: Shared libraries
ii libc6-dev 2.15-0ubuntu10.5 Embedded GNU C Library: Development Libraries and Header Files
Then
dpkg -r libc6
It prints a alot of packages which depends on libc6 and tell me:
dpkg: error processing libc6 (--remove):
dependency problems - not removing
Errors were encountered while processing:
libc6
It seems it doesn't know there are 2 version libc6 on system.
Use
dpkg --get-selections
gets:
libc6 deinstall
libc6-dev install
How should I do?
I have reinstall it by aptitude. It much powerful than apt-get and dpkg, none of them reinstall works.
sudo aptitude reinstall libc6
The following packages will be REINSTALLED:
libc6
0 packages upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
The following packages have unmet dependencies:
libc6-dev : Depends: libc6 (= 2.15-0ubuntu10.5) but 2.17-0ubuntu5.1 is installed.
libc-dev-bin : Depends: libc6 (< 2.16) but 2.17-0ubuntu5.1 is installed.
libnih1 : PreDepends: libc6 (< 2.16) but 2.17-0ubuntu5.1 is installed.
E: I wasn't able to locate a file for the libc6 package. This might mean you need to manually fix this package.
The following actions will resolve these dependencies:
Downgrade the following packages:
1) libc-bin [2.15-0ubuntu10.5 (now, precise-security, precise-updates) -> 2.15-0ubuntu10 (precise)]
2) libc-dev-bin [2.15-0ubuntu10.5 (now, precise-security, precise-updates) -> 2.15-0ubuntu10 (precise)]
3) libc6 [2.17-0ubuntu5.1 (now) -> 2.15-0ubuntu10 (precise)]
4) libc6-dev [2.15-0ubuntu10.5 (now, precise-security, precise-updates) -> 2.15-0ubuntu10 (precise)]
Accept this solution? [Y/n/q/?] y
The following packages will be DOWNGRADED:
libc-bin libc-dev-bin libc6 libc6-dev
0 packages upgraded, 0 newly installed, 4 downgraded, 0 to remove and 0 not upgraded.
Need to get 8,852 kB of archives. After unpacking 88.1 kB will be freed.
Do you want to continue? [Y/n/?] y
As aptitude says, there are 4 packages belong to libc6, but I only install one of them by deb file. Maybe that is the reason trash the system
As @jean mentioned you need to downgrade the package to your system's needs:
- Check which version on ubuntu you're using
- Download the libc6 or related deb packages from this link.
- You are gonna install the .deb file you downloaded via terminal using this command: e.g.
sudo dpkg -i --auto-deconfigure '/home/your-system-name/Downloads/libc6_2.30-0ubuntu2_amd64.deb
Similarly, you can type sudo dpkg -i --auto-deconfigure & drag and drop the
.deb file then you will get similar as above.**
- Then after it has installed, run
sudo apt-get update && sudo apt-get upgrade && sudo apt-get install
- You can also use the Synaptic Package Manager to reinstall any missing packages.
You'll be okay. I had to downgrade my libc6-2.30 to libc6-2.28-10 on Zorin OS 15.2 today and it worked.