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lang-bash
manpage (there was no mention of the version number on the web page :/ )<<<is bash 'here string'. I don't think it appears in any other shell. (Oh,zshmaybe...)man ksh. It was certainly mentioned there.sleep 3 <<<"here string" & lsof -p $! | grep 0r→sleep 30251 anthony 0r REG 253,0 12 263271 /tmp/sh-thd-7256597168 (deleted)— yep, it uses a tempfile.