Thorsten Glaser <[email protected]> wrote: > Whether ?echo? is a builtin or not is an implementation detail. > Heck, things like ?true?, ?false?, ? are (and others can be) > implemented in some operating systems by symlinking them to the > shell executable (either ksh93 *or* mksh? not even considering > busybox).
echo was made a builtin in the early 1980s already for performance reasons. true/false have been added by some shells to speed up "configure" ;-) Jörg -- EMail:[email protected] (home) Jörg Schilling D-13353 Berlin [email protected] (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.org/private/ http://sf.net/projects/schilytools/files/'
