Actions in a chrooted shell environment and SSH Terminal extension do not work correctly: "E557: Cannot open termcap file" and arrow keys have incorrect effect

Anton Kuznetsov

Updated May 16, 2024 06:45

kb: bug Plesk for Linux

Applicable to:

The text files cannot be opened by the vim editor, with the error below:

E557: Cannot open termcap file
Characters are not removed with the backspace button, instead a space character is written in SSH
In an attempt to read a file with less utility, after it is not possible to exit from the opened file.
In SSH Terminal extension the arrow keys do not work as expected to navigate in the SSH session

Plesk bug with ID #PPPM-12254, which is planned to be fixed in a future Plesk version.

Until the bug is fixed, apply the following workaround:

Download the update_chroot script to the server
Add the terminal capabilities to the chroot template by executing the update_chroot script as below:

# ./update-chroot.sh --termcap
Apply the new template:
- For the specific domain:
  
  # ./update-chroot.sh --apply example.com
  
  Note: replace example.com with the name of the required domain.
- For all domains:
  
  # ./update-chroot.sh --apply all