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I had an issue in /usr/lib and /usr/share I tried to fix it, but after I rebooted the computer I got these error messages and I couldn't run the computer again.

/sbin/init:error while loading shared libraries: libip4tc.so.0:   
 cannot open shared object file: no such file or directory   
[timestamp] end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00
karel
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Salah Samy
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  • If you re-install (refer @user535733's answer, I'd suggest using 'something else' & not-format your partition(s) whilst using existing. It'll cause the installer to take note of your installed packages. erase system directories & install system, then add-back your additional packages (you didn't give details of your release, so I've made assumptions that may not apply in your case). It doesn't touch user files (unless you format which will cause them to be wiped), and is very quick. – guiverc Jan 01 '20 at 02:17

1 Answers1

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There seem to be two problems. Read from the bottom upwards, the first problem seems that your kernel cannot start properly.

This may be very easy to workaround - simply select another kernel at the GRUB prompt (Alternative method).

The second problem is that you seem to have broken iptables, your system's firewall. This is indeed a problem, as it may prevent your system from booting properly. Happily, it also seems fairy easy to fix IF your system can be booted (see above):

sudo apt install --reinstall iptables

If your system still cannot be booted, then it looks to me that you have two choices:

  1. Boot from a LiveUSB, chroot your system, and then reinstall the iptables package. This method is NOT for beginners, and makes sense for intermediate/advanced users with a LOT of customizations that they don't want to lose.

  2. Boot from a LiveUSB, backup your data, and reinstall your Ubuntu system. for most newer users, this is going to be faster and easier.

We don't know what you did...but don't do that again.

user535733
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