I am using KDE Neon as my daily driver on my laptop. Recently due to KDE Neon update 6.0, there have been many bugs, but one as annoying as the one I faced the other day.
After system update, my bash stopped working completely. Granted I use zsh as my shell, bash is required by many programs on Linux. But everytime, I opened any such program, say pyenv, it just wouldn’t work and give following error
I looked into /usr/bin and couldn’t find bash there. I couldn’t install bash using dpkg or apt. This was pretty perplexing for me. Here is how I resolved the error with bash.
First of all, I edited the file /var/lib/dpkg/info/bash.prerm and changed first line to #! /bin/sh from #! /bin/bash
set -e
case “$1” in
upgrade)
update-alternatives –remove builtins.7.gz
/usr/share/man/man7/bash-builtins.7.gz
;;
remove|deconfigure)
;;
failed-upgrade)
;;
*)
echo “prerm called with unknown argument `$1′” >&2
exit 1
;;
esac
Next I looked into /var/cache/apt/archives/ and found the file bash_5.1-6ubuntu1.1_amd64.deb. If you cannot find this file, you can download from here
Next I ran the command
This helped me restore the bash and helped me run programs again.
