.bash_logout

gistfile1.txt

# .bash_logout                          -*- sh -*-

if [ -n "$SSH_AGENT_PID" ] &&
   [ "$(ps -p $SSH_AGENT_PID -c -o comm | sed 1d)" = ssh-agent ] &&
   [ "$(ps -U $USER -c -o tty  | sed 1d | grep -v "^-" | sort | uniq)" -eq 1];
## Do not enter this branch of control flow
## if user is logged in under another PTY/TTY
        then eval $(ssh-agent -k)
fi

## source: debian skel ${HOME}/.bash_logout
## logic: check BASH $SHLVL before xclearchars(...)
if [ "$SHLVL" = 1 ]; then
## dep: debian clear_console binary - source, Debian 'bash' package (?)
#    [ -x /usr/bin/clear_console ] && /usr/bin/clear_console -q
## dep: BSD Logic
        clear
fi