Sometimes it’s handy to filter the output of a command (with grep, forexample) while still having the column names (the first line) available. How dowe go about that? One example of this would be when filtering the output of ps. What does thefollowing output mean, after all? $ ps -ef | grep logd 0 124 1 0 7:45AM ?? 0:01.46 /usr/sbin/syslogd 0 146 1 0 7:45AM ?? 0:09.44 /usr/libexec/logd 1000 17263 14631 0 10:36AM ttys010 0:00.01 grep --color=auto logd It would be much more readable if the ou...