eolas/Programming_Languages/Shell/Split_into_array.md
2023-01-25 19:24:47 +00:00

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Programming Languages
shell

Splitting input into an array

readarray

readarray makes it really easy to split input into an array.

Say we have this file as input:

123
456
789

Then we can split like so:

readarray -t name_for_array < ./input.text

# Print all elements
echo "${name_for_array[@]}"

# Print element by index

echo "${name_for_array[1]}"
456

If we want to read direct from string within bash file:

readarray -t new_name_for_array <<< "here
is
some
text"

echo "${new_name_for_array[1]}"
is

The -t flag removes the trailing newline

Add more: https://linuxhint.com/split-string-array-bash/