cp si9400.c sj9400.c
ed -r sj9400.c
1,$s/SI/SJ/gp
1,$s/si/sj/gp
g/170700/s//171700
1,$s/sjzes/sizes/gp
1,$s/physjo/physio/gp
1,$s/resjd/resid/gp
w
q
