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check the difference between 2 array

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# 1  
Old 01-27-2012
check the difference between 2 array
Hello

Thanks everyone for the help earlier, what I would like to learn now is how can I achieve the following :



array1 = (1234567,7665456,998889,000909)
array2 = (1234567,5581445,998889,000909)

Result

5581445 doesn't exist on array1

Thank you
# 2  
Old 01-27-2012
Please show us what you have done so far.

You should have the logic and ask for help on which commands to use.
# 3  
Old 01-27-2012

Usng bash:
Code:
array1=(1234567 7665456 998889 000909)
array2=(1234567 5581445 998889 000909)

grep -v -f <(printf "%s\n" "${array1[@]}")  <(printf "%s\n" "${array2[@]}")

# 4  
Old 01-30-2012
Quote:
Originally Posted by cfajohnson

Usng bash:
Code:
array1=(1234567 7665456 998889 000909)
array2=(1234567 5581445 998889 000909)
grep -v -f <(printf "%s\n" "${array1[@]}")  <(printf "%s\n" "${array2[@]}")

Ran above code using bash and received the following error:
Code:
grep: /dev/fd/62: No such file or directory

The following code works:
Code:
array1=(1234567 7665456 998889 000909)
array2=(1234567 5581445 998889 000909)
printf "%s\n" "${array2[@]}" | grep -v "$(printf "%s\n" "${array1[@]}")"

# 5  
Old 01-30-2012
Quote:
Originally Posted by Shell_Life
Ran above code using bash and received the following error:
Code:
grep: /dev/fd/62: No such file or directory

The following code works:
It worked for me though!
Code:
root@bt> bash --version
GNU bash, version 4.1.5(1)-release (i486-pc-linux-gnu)

root@bt> array1=(1234567 7665456 998889 000909)
root@bt> array2=(1234567 5581445 998889 000909)
root@bt> grep -v -f <(printf "%s\n" "${array1[@]}")  <(printf "%s\n" "${array2[@]}")
5581445

--ahamed
# 6  
Old 01-30-2012
I used:
Code:
GNU bash, version 3.2.0(1)-release (x86_64-unknown-linux-gnu)

As much as possible, if one solution can be given in a more universal usage, then we must provide it.

Otherwise, for the same requirement, there will be several possible solutions, based on which OP (linux, unix), shell, shell version, etc.

Let's be generic as much as we can.
# 7  
Old 01-30-2012
Hi.

See also check the difference between 2 arrays

Best wishes ... cheers, drl
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