script to find the average number or files?

bbbngowc · #1 (**permalink**) 03-27-2008

Anyone has a script or command in UNIX that can take 4 to five different numbers and calculate the average?

era · #2 (**permalink**) 03-27-2008

As it happens, I just wrote one.

Code:

vnix$ cat ~/bin/avg
#!/usr/bin/perl -lan

my $sum = 0.0;
map { $sum += $_ } grep { /^(\d+(\.\d+)?|\.\d+)$/ } @F;
print "$0: $sum / ", scalar (@F), " = ", $sum / @F if @F;

You'd type in numbers separated by space and hit enter when you're done.

ghostdog74 · #3 (**permalink**) 03-27-2008

Quote:

Originally Posted by bbbngowc

Anyone has a script or command in UNIX that can take 4 to five different numbers and calculate the average?

Code:

# echo "1 2 3 4 6" | awk '{for(i=1;i<=NF;i++) t+=$i}END{print t/NF}'
3.2

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