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edited Jul 15, 2018 at 18:20

If, like me, you actually wanted "both; each exactly once",~~"both; each exactly once",~~ (this is actually "either; twice") then it's simple:

grep -E "thing1|thing2" -c

and check for the output 2.

The benefit of this approach (if exactly once is what you want) is that it scales easily.

If, like me, you actually wanted "both; each exactly once", then it's simple:

grep -E "thing1|thing2" -c

and check for the output 2.

The benefit of this approach (if exactly once is what you want) is that it scales easily.

If, like me, you actually wanted ~~"both; each exactly once",~~ (this is actually "either; twice") then it's simple:

grep -E "thing1|thing2" -c

and check for the output 2.

The benefit of this approach (if exactly once is what you want) is that it scales easily.

answered Jan 13, 2017 at 13:20

If, like me, you actually wanted "both; each exactly once", then it's simple:

grep -E "thing1|thing2" -c

and check for the output 2.

The benefit of this approach (if exactly once is what you want) is that it scales easily.