pad

pad(string, length, char?) → string · String

Pad a string on the left to the given length. Default pad character is space.

• string (required): the string to pad

• length (required): target length

• char (optional): pad character (default " ")

echo '{"id": "42"}' | utlx -e 'pad($input.id, 5, "0")'
# "00042"

{
  invoiceNo: pad(toString($input.seq), 8, "0")
}