#!perl rename("$ARGV[0]", "$ARGV[0].old"); open(FILE, "$ARGV[0].old"); open(OFILE, ">$ARGV[0]"); while() { if($. != $ARGV[1]) { print OFILE; next; } s/Sys_Printf \(/Sys_FPrintf \(SYS_VRB,/; s/Sys_Printf\(/Sys_FPrintf \(SYS_VRB,/; print OFILE; } close(OFILE); close(FILE);