IFS

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`$IFS` (Internal Field Separator) is a special environment variable that defines the delimiter used for word splitting in Unix shells. The default value of `$IFS` is a space, tab, and newline. The three characters serve as delimiters.

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Examples (4)

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")

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