foreach loop + 2 variables

JamesGoh · #1 (**permalink**) 06-03-2008

In a foreach loop, is it possible for the loop to go through 2 arguments instead of one

i.e. instead of foreach i (do stuff for i), we have foreach i j(do stuff for i; do stuff for j)

I am working under BASH and TCSH shell environments

cheers

era · #2 (**permalink**) 06-03-2008

You can do that with while:

Code:

while read i j; do
  stuff with i
  stuff with j
done <<HERE
firsti firstj
secondi secondj can have several fields actually
thirdi thirdj -- it splits on whitespace
fourthi fourthj; but only as many as necessary
fifthi fifthj ... and the remainder is unsplit
HERE

It's not exactly what you asked for, but hopefully close enough.

JamesGoh · #3 (**permalink**) 06-03-2008

thanks heaps, will have a go and get back to you

Wolja · #4 (**permalink**) 06-04-2008

Quote:

Originally Posted by era

You can do that with while:

Code:

while read i j; do
  stuff with i
  stuff with j
done <<HERE
firsti firstj
secondi secondj can have several fields actually
thirdi thirdj -- it splits on whitespace
fourthi fourthj; but only as many as necessary
fifthi fifthj ... and the remainder is unsplit
HERE

It's not exactly what you asked for, but hopefully close enough.

God I wish I'd read this three days ago

Ta very useful.

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