devdesk/debian/devdesk.postinst

#!/bin/sh
set -e

case "$1" in
configure)
    # Credential ttyd requires; NPM injects it as an Authorization header.
    if [ ! -s /etc/devdesk/secret.env ]; then
        umask 077
        secret=$(od -An -tx1 -N24 /dev/urandom | tr -d ' \n')
        printf 'DEVDESK_CREDENTIAL=devdesk:%s\n' "$secret" >/etc/devdesk/secret.env
    fi
    chmod 600 /etc/devdesk/secret.env
    # Apply tmux.conf changes to a running server without restarting it.
    if [ -S /run/devdesk/tmux.sock ]; then
        tmux -N -S /run/devdesk/tmux.sock source-file /usr/share/devdesk/tmux.conf >/dev/null 2>&1 || true
        # Before 0.3.1 every upgrade appended another copy of DevDesk's
        # terminal-features entry; tmux.conf now sets index 90. Drop the copies.
        tmux -N -S /run/devdesk/tmux.sock show -s terminal-features 2>/dev/null |
            awk '$2 == "xterm-256color:RGB" && $1 != "terminal-features[90]" { print $1 }' |
            while read -r opt; do
                tmux -N -S /run/devdesk/tmux.sock set -su "$opt" >/dev/null 2>&1 || true
            done
    fi
    ;;
esac

#DEBHELPER#

exit 0