Re: One-liner only checking the first line of the input file

in reply to One-liner only checking the first line of the input file

Are your line endings what you expect (ie. is the file being treated as one long line as opposed to several)? Try this, and see if you get a single line, or all of the lines printed:

perl -lane 'print $_; exit;' input.txt
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Re^2: One-liner only checking the first line of the input file by TJCooper (Beadle) on Nov 11, 2015 at 14:30 UTC
`perl -lane 'print $_; exit;' input.txt > output.txt` Output.txt appears identical to the input file - all lines are printed.	[reply] [d/l]
Re^3: One-liner only checking the first line of the input file by stevieb (Canon) on Nov 11, 2015 at 14:41 UTC
Do this: `perl -anE '/(\R)/; say unpack("H", $1);' input.txt` [download] It appears as your file is being read as one long string. If you're on nix, your output should be `0a` per line for as many lines you have in the file. Post what the output shows.	[reply] [d/l] [select]
Re^4: One-liner only checking the first line of the input file by TJCooper (Beadle) on Nov 11, 2015 at 14:51 UTC
Outputs `0d` only once.	[reply] [d/l]
Re^5: One-liner only checking the first line of the input file by stevieb (Canon) on Nov 11, 2015 at 15:04 UTC
Re^6: One-liner only checking the first line of the input file by TJCooper (Beadle) on Nov 11, 2015 at 15:13 UTC
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