trying to cat multiple pairs of files

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02-11-2012

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trying to cat multiple pairs of files

I have a number of files in a directory named like this:
fooP1, fooN1, fooP2, fooN2 ... fooP(i), fooN(i).

I'd like to know how to combine each P and N pair into a single file, foo(i)
TIA
John Balwit

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02-12-2012

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Code:

for f in fooP[1-9]*; do n=${f#fooP}; [ -e fooN${n} ] && cat foo{P,N}${n} > fooPN${n}; done

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