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I primarily work in a linux server environment. I often encounter files that were originally written on another operating system. That can make life hard for scripts like the following: 

$ echo -e "123\n456\n789" > foo.txt
$ hexdump -C foo.txt
00000000  31 32 33 0a 34 35 36 0a  37 38 39 0a              |123.456.7
+89.|
0000000c
$ cat foo.txt | perl -wle 'use strict; while(my $line = <>) { chomp $l
+ine; ($line =~ m/^\d+$/) ? print qq{number ok:"$line"} : print qq{num
+ber error:"$line"} }'
number ok:"123"
number ok:"456"
number ok:"789"
$ unix2dos foo.txt
unix2dos: converting file foo.txt to DOS format ...
$ hexdump -C foo.txt
00000000  31 32 33 0d 0a 34 35 36  0d 0a 37 38 39 0d 0a     |123..456.
+.789..|
0000000f
$ cat foo.txt | perl -wle 'use strict; while(my $line = <>) { chomp $l
+ine; ($line =~ m/^\d+$/) ? print qq{number ok:"$line"} : print qq{num
+ber error:"$line"} }'
"umber error:"123
"umber error:"456
"umber error:"789
$

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I'd like my scripts to be platform-agnotic, that is, process files regardless of being created on a Unix, Windows or Mac platform.

I use unix2dos manually on occations, but I'd rather have my perl scripts do this themselves when they encounter files created on a foreign operating system. Is there a reliable way to do this?

--
No matter how great and destructive your problems may seem now, remember, you've probably only seen the tip of them. [1]

In reply to Process file regardless of the platform it was created on by andreas1234567

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