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Idea - Return *new* lines from a text file (w/ example)

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f0dder:
Is this supposed to be a general-purpose utility, or "pretty specific"? Do you want the program to output new lines and exit, or would continually running & monitoring work? This all affects strategies :)

If the program can run continuously, it can monitor changes and only read the file on change - and it can rate-limit this to whatever/second in case of often modified files, plus it can cache the "where'd I toddle off to last" in memory.

If you want run-dump-exit, there "where'd I toddle off to last" will have to be stored somewhere. If the file(s) will always be on NTFS partitions, ADS could be a good idea.

strictlyfocused02:
Is this supposed to be a general-purpose utility, or "pretty specific"? Do you want the program to output new lines and exit, or would continually running & monitoring work? This all affects strategies :)

If the program can run continuously, it can monitor changes and only read the file on change - and it can rate-limit this to whatever/second in case of often modified files, plus it can cache the "where'd I toddle off to last" in memory.

If you want run-dump-exit, there "where'd I toddle off to last" will have to be stored somewhere. If the file(s) will always be on NTFS partitions, ADS could be a good idea.
-f0dder (August 09, 2010, 12:25 PM)
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General purpose was what I was thinking.  Definitely run and exit though. 

CmputrAce's idea of the utility returning the file size to stdout on the first call and then on the second call if the filesize is supplied it would just return the new lines.  This would be easy enough to handle because you could just use whatever program\script is calling the utility (AHK in my case) to call and store the size and then just supply that size on the second call.

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