G:\>perl x.pl

G:\>perl nonexistant.pl
Can't open perl script "nonexistant.pl": No such file or directory

G:\>perl x.pl diff.txt
QYQ:SE0004017929:LUP2L 100OHM
R1M:SE0004018539:TLS2K 50OHM
QNF:SE0003990183:MINILONG OMX A O
QX8:SE0004017440:ALF2K 160OHM
NC0:SE0003842137:BOL2K 170OHM
NEV:SE0003843069:NOK2K 90OHM

G:\>