Hello monks quick question from a beginning perlist: I have a program that goes through an input file line for line and modifies this input using regexes. That part is working great EXCEPT I need to use a different regex on the LAST LINE only. After hours trying different setups (i.e. banging head on desk), I have decided to seek assistance. Here's what I have thus far:
open(TXTIN,"ARGV[0]") || die "Cannot open the data file";
open(TXTOUT,">ARGV[1]") || die "Cannot open the formatted file";
       
#$itercnt=0
while(<TXTIN>) {#counting number of lines in input file
$itercnt++
}
       
for ($match=0;$match<$itercnt;$match++){
     while(TXTIN){
  chomp $_;
$_ =~ s/yada/yadda/;
print TXTOUT $_;
}}
#for (;$match=$itercnt;$match++){
#     while(TXTIN){
#  chomp $_;
#$_ =~ s/different/regex here/;
#print TXTOUT $_;
#}}    # getting stuck in infinite loop in here somewhere
       # so I haven't been able to see if it is working
close(TXTIN);
close(TXTOUT);

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So the input file can have anywhere from 1 to 100 lines, I'll never know before hand what the number will be. I've already tried 'eof' and it doesn't work because by the time it is 'true' the last line has already been modified/written. So, (A) am I going about this the totally wrong way? (B) if so, is there a better way to do this? Please keep in mind I am a novice, and would like to at least understand what is going on. And if you see any glaring defects feel free to point them out. TIA- Joe

In reply to While.For loop noob query by jriggs420

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