Debian and Ubuntu

To install packages from the TCSH repository for Debian and Ubuntu, you should first download a trust anchor into your system using this command:

curl -o /usr/share/keyrings/tcsh-archive-keyring.gpg \
    https://deb.tcsh.org/tcsh-archive-keyring.gpg

Then create the configuration that adds the repository to the sources used by apt:

echo 'deb [signed-by=/usr/share/keyrings/tcsh-archive-keyring.gpg]' \
    https://deb.tcsh.org/`lsb_release -is | tr A-Z a-z`/ \
    `lsb_release -cs` main > /etc/apt/sources.list.d/tcsh.list

Once this is done, you can update tcsh to the latest available version.

apt-get update && apt-get install tcsh

Finally make sure updates to the keyring are received in a timely manner.

apt-get install tcsh-archive-keyring

Packages are available for the following operating system releases:

Packages are available for the amd64 and arm64 architectures only.