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Cover Image for TF CMD Cheatsheet: String Functions 📝

TF CMD Cheatsheet: String Functions 📝

Quick reference for commonly used TF string functions. Learn how to manipulate strings efficiently in your Terraform configurations with this handy cheatsheet.

Written by Hitesh Sahu, a passionate developer and blogger.

Mon Sep 29 2025

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func	output	usage
`startswith("hello world", "hello")`	true
`endswith("hello world", "world")`	true
`upper("hello")`	HELLO
`lower("HELLO")`	hello
`strrev`("hello")	olleh
`substr`("hello world", 1, 4)	ello
`title("hello world")`	Hello World
`trim`("?!hello?!", "!?")	hello	Removes the specified set of characters from the start and end of the given string.
`trimsuffix`("helloworld", "world")	hello	removes the specified suffix from the end of the given string.
`trimprefix`("helloworld", "hello")	world	removes the specified prefix from the start of the given string.
`trimspace(" hello\n\n")`	hello	removes any space characters from the start and end of the given string.
`indent(2, "[\n foo,\n bar,\n]\n")`	items: [ foo,bar]	adds a given number of spaces to the beginnings of all but the first line in a given multi-line string.
`join`("-", ["foo", "bar", "baz"])	"foo-bar-baz"	produces a string by concatenating all of the elements of the specified list of strings with the specified separator.
`replace`("1 + 2 + 3", "+", "-")	1 - 2 - 3	searches a given string for another given substring, and replaces each occurrence with a given replacement string.
`split`(",", "foo,bar,baz")	["foo","bar","baz",]	produces a list by dividing a given string at all occurrences of a given separator.

Terraform/CLI