On 02-Dec-2012 18:40:11 Clarke Echols wrote: > In a recent email the syntax: > > groff <<<foo ... > > was used. > > I've used Unix/Linux for over 25 years, and I've never seen > that "triple redirect" before. What does it do? I get nowhere > with a Google search because it ignores the '<<<'. > > Thanks, > Clarke
It surprised me too! Never seen it before. However, rather than mess about feeding mysteries to groff, I tried some simple experiments with 'cat': $ cat <<<foo foo $ cat <<< foo foo $ cat <<foo > This is input > foo This is input $ cat << <foo bash: syntax error near unexpected token `<' $ cat < <<foo bash: syntax error near unexpected token `<<' While everything else does what one naturally expects, 'cat <<<foo' or 'cat <<< foo' seems to be a way of passing what follows the "<<<" directly to the command, as if equivalent to "echo foo | cat". That's my take on it, anyway! Best wishes, Ted. ------------------------------------------------- E-Mail: (Ted Harding) <ted.hard...@wlandres.net> Date: 02-Dec-2012 Time: 19:02:15 This message was sent by XFMail -------------------------------------------------
