myshellconfig/myshell_load_x2go_tokenforward

# --- BEGIN X2Go SSH forwarding workaround ---


# Part that runs in regular SSH session

# check we have an agent socket and
# check we have an ~/.x2go directory
if [ -n "$SSH_AUTH_SOCK" ] && \
   [ -d ~/.x2go ] && \
   [ -z "$X2GO_AGENT_PID" ] ; then
        # touch the output file and set permissions
        # (as tight as possible)
        touch ~/.x2go/agentsocket
        chmod 600 ~/.x2go/agentsocket
        chown $USER ~/.x2go/agentsocket
        # write file name of agent socket into file
        loginfo "old agentsock $( cat ~/.x2go/agentsocket)"
        echo $SSH_AUTH_SOCK > ~/.x2go/agentsocket
        loginfo "write SSH_AUTH_SOCK (${SSH_AUTH_SOCK}) to ~/.x2go/agentsocket"
fi

# Part that runs in X2Go session

# check we're on an X2GoServer (x2golistsessions is in path),
# check we have a DISPLAY set, and
# check our client DISPLAY and SSH client IP correspond to
# a running X2Go session and
# check ~/.x2go/agentsocket is a regular file
if which x2golistsessions >/dev/null && \
   [ -n "$DISPLAY" ] && \
   [ -n "$(x2golistsessions | \
        awk -F '|' '":"$3 == "'$DISPLAY'" && \
                    $5 == "R" && \
                    $8 == "'$(echo $SSH_CLIENT | \
                    awk '{print $1}')'" { print $3 }')" ] && \
   [ -f ~/.x2go/agentsocket ] ; then
        # all checks passed, read content of file
        # (might still contain stale agent socket or garbage
        MIGHTBEOURAGENT=$(cat ~/.x2go/agentsocket)
        # check if it corresponds to an existing socket
        logdebug "MIGHTBEOURAGENT: $MIGHTBEOURAGENT"
        if [ -S "$MIGHTBEOURAGENT" ]; then
                # export path to agent socket
                export SSH_AUTH_SOCK=$MIGHTBEOURAGENT
                logdebug "export it"
        fi
fi


# ---- END X2Go SSH forwarding workaround ----

https://www.johntobin.ie/blog/updating_environment_variables_from_tmux/
function prompt_command() {
    if [ -n "${TMUX}" ]; then
        eval "$(tmux show-environment -s)"
    fi
}
PROMPT_COMMAND=prompt_command