im wanting to write a simple perl 'filter' program in windows. I basically took the base code found here.
http://www.techrepublic.com/blog/programming-and-development/simple-filters- in-perl-ruby-and-bourne-shell/3481 the sample here is simple, convert upper case single byte ascii chars to lower case. #assume youve got a text file, 'test.txt' = 'THIS is a test file' #this works on windows: # filter.pl test.txt #this doesnt seem to work on windows (should it?): # type file.txt | filter.pl while (<>) { #read input from std in print lc($_); #print to std out the lowercase string } C:\perlsrc\getc>filter.pl test.txt this is a test file C:\perlsrc\getc>type test.txt THIS is a test file C:\perlsrc\getc>type test.txt | filter.pl The process tried to write to a nonexistent pipe. when invoked as filter.pl test.txt - it works fine. but in this case nothing is technically being 'piped' into filter.pl. instead I am giving it the name of a file as an ARGV. when invoked as a true filter, type test.txt | filter.pl, it croaks with 'the process tried to write to a nonexistent pipe'. I am not sure if what I am trying to do can be achieved with such simple code on windows.
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