On 15.07.2005, at 0:46, nj18 wrote: > I guess it's a problem about "echo". I am going to compare > /usr/src/bin/echo/echo.c in FreeBSD 5.4. and FreeBSD 4.6. You may wish to consider tcsh/sh sources, since echo is builtin command in most shells. Or try using /bin/echo instead of just echo.