shard splits a file line by line into a number of files.
This has a similar purpose to the Unix command split, but shards line by line instead of each output file having a continguous section of the original file. So, when splitting into two files, split will output two files, one containing the first half of the original file, and the other the second half. shard will output two files, one containing the odd lines, the other the even lines.
shard input-file number-of-chunks
For example, shard long-file.txt 3 will produce three files called long-file.txt.0, long-file.txt.1 and long-file.txt.2, each having every third line from long-file.txt.
sudo install shard.py /usr/local/bin/shard