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

Let me contribute to Sanket Parmar's answer. If you can extract string splitting and processing into a separate function, there is no need to save and restore $IFS — use local instead:

#!/bin/bash

function print_with_line_numbers {
    local IFS=$'\n'
    local lines=($1)
    local i
    for (( i=0; i<${#lines[@]}; i++ )) ; do
        echo "$i: ${lines[$i]}"
    done
}

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

print_with_line_numbers "$names"

See also:

• Setting IFS for a single statement