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IFS

IFS (Internal Field Separator) is a special environment variable that defines the delimiter used for word splitting in Unix shells. The default value of IFS is a space, tab, and newline. The three characters serve as delimiters. More information: https://www.gnu.org/software/bash/manual/html_node/Word-Splitting.html.

View the current IFS value:

echo "$IFS"

Change the IFS value:

IFS="{{:}}"

Reset IFS to default:

IFS=$' \t\n'

Temporarily change the IFS value in a subshell:

(IFS="{{:}}"; echo "{{one:two:three}}")