SHELL

bash store file in array

# Basic syntax:
FILELINES=`cat your_file.txt`

# Example usage:
# Say you have a file "your_file.txt" containing the following sample names
# and you want to iterate over them in a bash script:
SAMPLE1
SAMPLE2
SAMPLE3
# The bash script would look like:
SAMPLES=`cat your_file.txt`
for SAMPLE in $SAMPLES; do
	echo $SAMPLE
done

bash load file as array

# Basic syntax:
while IFS= read line; do
	FILE_IN_ARRAY+=("$line")
done </path/to/your/file.txt
# Where:
#	- this site explains arrays helpfully: 
#		https://linuxize.com/post/bash-arrays/

bash read file into array

readarray -t arr <file