foormea@foormea:~$ PROMPT_COMMAND='(( history | tail -2 | head -1 | grep "vim\|less" )) || \'echo -ne "\033]0;${USER}@${HOSTNAME} `tty` ${PWD/$HOME/~}\007"\' && \'echo -ne "\033]0;${USER}@${HOSTNAME} `tty` $_ {PWD/$HOME/~}\007"\' 
bash: -ne: command not found
foormea@foormea:~$