[Code Example] Read file line by line and store in array using bash script

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In this article we will provide you bash script code to read a file line by line and store it in array. This code can preserve empty lines or discard them according to the need.

Code Example –

1. Bash <4 (discarding empty lines).

#!/bin/bash

IFS=$'\n' read -d "" -ra file_data < "file"

echo $file_data

2. Bash <4 (preserving empty lines)

#!/bin/bash

while read -r line; do
    file_data+=("$line")
done < "file"

echo $file_data

3. For Bash 4+

#!/bin/bash

mapfile -t file_data < "file"

echo $file_data

Inspired from Dylan Araps

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