Douwe's questions

Today I succesfully upgraded to Ubuntu 20.10. However, I noticed that the Atom text editor that I use was gone after the update. So, I tried installing it using sudo apt install atom. That didn't work and threw the following error:

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 atom : Depends: gvfs-bin but it is not installable
E: Unable to correct problems, you have held broken packages.

Does this mean that I upgraded to 20.10 too soon and that Atom does not support it yet? I tried a few things, like

• Reinstalling gvfs-bin;

  Package gvfs-bin is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source

  E: Package 'gvfs-bin' has no installation candidate

• apt clean, apt autoremove, apt install --fix-broken, apt install -f

I want a script to execute a few commands in chroot. So, like this answer proposed scripting chroot, how to? I added the following part in my script, creating a .sh file with the commands I want it to execute.

cat <<EOF >/mnt/grubscript.sh
#!/bin/bash
cp /proc/mounts /etc/mtab
grub-install /dev/vdb
grub-install --recheck /dev/vdb
EOF

chroot /mnt ./grubscript.sh

This generates the following error:

chroot: failed to run command ‘./script.sh’: Permission denied

I tried chmod 777 and chmod +x but that doesn't work. The file has been created right, and cannot be executed manually from chroot as well.