1# eblog
set obs 1
gen a="bj k2.savrjk.savgok.savtest.sav"
gen b="?"+subinstr(a,"sav","sav? ?" ,3)+"?"
gen c=subinstr(b,"?",char(34),.)
or
loca a "bj k2.savrjk.savgok.savtest.sav"
loca b "?"+subinstr("`a'","sav","sav? ?" ,3)+"?"
loca c subinstr("`b'","?",char(34),.)
n dis `c'
请前辈指导!