I have a txt file " 80 50 65 100 2 35 1 " and i need to add each number in a Var or even better all of them in an array. like ...
var1=80 var2=50
or
array[0]=80
.by the way the number after that must be functional . I mean i need to be able to sum= $var1 +$var2 for example. Is there a way to do that ? Thank you!!
If your numbers are all on a line, use read
read -a array < numbers.txt
If they're on multiple lines you can change the end of line delimiter like this
read -d'\0' -a array < numbers.txt
And now you have an array
printf 'Number: %s\n' "${array[@]}"
Oh yeah, and summing. Lots of ways once you have an array, but how about
printf '%s + ' "${array[@]}" | xargs -I{} echo {} 0 | bc
Or do it all in one process
for n in "${array[@]}" ; do let sum+=$n ; done ; echo $sum
echo "${array[@]}"In bash, you can say
array=( $(< numbers.txt) )
sum=$( IFS=+; echo "${array[*]}" | bc )
So if you have a file nums.dat like
80 50 65 100 2 35 1
You can read these into an array with
read -a MYARRAY < nums.dat
If you have a much older bash or even ksh then it was something like (can't remember exactly sorry)
set -A MYARRAY $(cat nums.dat)
