Note that this use can be dangerous in situations where you are opening a file and the filename comes from an untrusted source (as is typically the case in CGIs, for example).

If you are using bash as your shell, you can do effectively the same thing by using process substitution, even if the file is opened with "<":

join.pl <(sort -t, A.csv |" "grep LALA B.csv | sort -t, )

I suspect other shells (but probably not cmd.exe) may have similar features.

In reply to Re: passing pipes on the command line by itub
in thread passing pipes on the command line by iradik

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