Exactly. It's a very nice trick when you have a program that expects to read from a file, and has no facilities for reading from STDIN. A common example is diff:

diff <(grep foo file1 | sort -u) \
     <(grep foo file2 | sort -u)

[download]

Of course, we have rapidly veered off topic for the Monastery, so I digress. :-)

In reply to Re^4: passing pipes on the command line by Mugatu
in thread passing pipes on the command line by iradik

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