Array of arrays in bash

Question

I'm attempting to read an input file line by line which contains fields delimited by periods. I want to put them into an array of arrays so I can loop through them later on. The input appears to be ok, but 'pushing' that onto the array (inData) doesn't appear to be working.

The code goes :

Input file:  GSDB.GOSALESDW_DIST_INVENTORY_FACT.MONTH_KEY GSDB.GOSALESDW_DIST_INVENTORY_FACT.ORGANIZATION_KEY   infile=${1}  OIFS=$IFS IFS=":"  cat ${infile} | while read line do       line=${line//\./:}       inarray=(${line}) #      echo ${inarray[@]} #      echo ${#inarray[@]}       #      echo ${inarray[0]} #      echo ${inarray[1]} #      echo ${inarray[2]}        inData=("${inData[@]}" "${inarray[@]}") done  IFS=$OIFS  echo ${#inData[@]}     for ((i = 0; i < ${#inData[@]}; i++)) do  echo $i     for ((j = 0; j < ${#inData[$i][@]}; j++))     do        echo ${inData[$i][$j]}     done done 

Answer 1

Field nest box in bash but it can not circumvent see the example.

#!/bin/bash  # requires bash 4 or later; on macOS, /bin/bash is version 3.x, # so need to install bash 4 or 5 using e.g. https://brew.sh  declare -a pages  pages[0]='domain.de;de;https' pages[1]='domain.fr;fr;http'  for page in "${pages[@]}" do     # turn e.g. 'domain.de;de;https' into     # array ['domain.de', 'de', 'https']     IFS=";" read -r -a arr <<< "${page}"      site="${arr[0]}"     lang="${arr[1]}"     prot="${arr[2]}"     echo "site : ${site}"     echo "lang : ${lang}"     echo "prot : ${prot}"     echo done 

Answer 2

Bash has no support for multidimensional arrays. Try

array=(a b c d) echo ${array[1]} echo ${array[1][3]} echo ${array[1]exit} 

For tricks how to simulate them, see Advanced Bash Scripting Guide.