UNIX Pipelines

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Old 10-15-2013
Another way:
$ cat infile
The quick brown fox jumped
over the fence
and ran into the woods

$ printf "%s\n" $(<infile) >outfile

$ cat outfile

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hash_update_stream - Pump data into an active hashing context from an open stream

int hash_update_stream (resource $context, resource $handle, [int $length = -1]) DESCRIPTION
o $context - Hashing context returned by hash_init(3). o $handle - Open file handle as returned by any stream creation function. o $length - Maximum number of characters to copy from $handle into the hashing context. RETURN VALUES
Actual number of bytes added to the hashing context from $handle. EXAMPLES
Example #1 hash_update_stream(3) example <?php $fp = tmpfile(); fwrite($fp, 'The quick brown fox jumped over the lazy dog.'); rewind($fp); $ctx = hash_init('md5'); hash_update_stream($ctx, $fp); echo hash_final($ctx); ?> The above example will output: 5c6ffbdd40d9556b73a21e63c3e0e904 SEE ALSO
hash_init(3), hash_update(3), hash_final(3), hash(3), hash_file(3). PHP Documentation Group HASH_UPDATE_STREAM(3)