linux - add entries to an array in bash -

in bash i'm trying create array , run through loop number of times (determined user of file) , add choice array predetermined number of times. trade data, example, choose 2 factors. program asks me input factor want, , put in open (open price of day), bid added array arr , question asked again. put in close (close price of day) close added array, , in end arr = open close that. run code , question: "how many factors check total: " runs on , on again , never leave loop , never appears inputs being put array. mistake here appreciated. thanks.

   factor=""     total=0     declare -a arr   read -p "how many factors check total: " -e -i "$total" total  (( x=1; x=total; x++ ))         read -p "enter factor list: " -e -i "$factor" factor                arr+=(${arr[@]} "$factor") done  echo ${arr[@]} 

you got correct on array append. remember += operator doesn't need full reference array again on rhs. e.g. just

arr+=($factor) 

would suffice append $factor @ end of array variable arr.

modify script little bit this:

factor="" total=0 declare -a arr  read -p "how many factors check total: " -e -i "$total" total  (( x=1; x<=total; x++ ))    read -p "enter factor list: " -e -i "$factor" factor           arr+=($factor) done  echo ${arr[@]}