1. tr 커맨드를 활용하는 방법

#!/bin/bash
 
STR="123,456,567 5,343"
 
STR_ARRAY=(`echo $STR | tr "," "\n"`)
 
for x in "${STR_ARRAY[@]}"
do
    echo "> [$x]"
done

> [123]
> [456]
> [567]
> [5]
> [343]

2. IFS(Internal Field Separator) 를 활용하는 방법

#!/bin/bash
 
STR="123,456,567 5,343"
 
OLD_IFS="$IFS"
IFS=","
STR_ARRAY=( $STR )
IFS="$OLD_IFS"
 
for x in "${STR_ARRAY[@]}"
do
    echo "> [$x]"
done

> [123]
> [456]
> [567 5]
> [343]

3. read 커맨드를 활용하는 방법

#!/bin/bash
 
STR="123,456,567 5,343"
 
IFS="," read -ra STR_ARRAY <<< "$STR"
 
for x in "${STR_ARRAY[@]}"
do
    echo "> [$x]"
done

> [123]
> [456]
> [567 5]
> [343]

4. set 커맨드를 활용하는 방법

#!/bin/bash

STR="123,456,567 5,343"
 
set -- "$STR" 
IFS=","; declare -a STR_ARRAY=($*) 
 
for x in "${STR_ARRAY[@]}"
do
    echo "> [$x]"
done

> [123]
> [456]
> [567 5]
> [343]