Convert multiline string to array

Question

I have this script:

nmapout=`sudo nmap -sP 10.0.0.0/24`
names=`echo "$nmapout" | grep "MAC" | grep -o \'(.\\+)\'`
echo "$names"
         


        

Answer 1

Bash also has a readarray builtin command, easily searchable in the man page. It uses newline (\n) as the default delimiter, and MAPFILE as the default array, so one can do just like so:

    names="Netgear
    Hon Hai Precision Ind. Co.
    Apple"

    readarray -t <<<$names

    printf "0: ${MAPFILE[0]}\n1: ${MAPFILE[1]}\n2: ${MAPFILE[2]}\n"

The -t option removes the delimiter ('\n'), so that it can be explicitly added in printf. The output is:

    0: Netgear
    1: Hon Hai Precision Ind. Co.
    2: Apple