Does it process every file in the folder?

Yes. It walks each file in the input folder and appends the suffix to every line, keeping original order.

How is it different from prefix-file-lines?

suffix-file-lines writes at the end of each line. prefix-file-lines writes at the start. Same glue role, opposite end.

Can it generate subdomain permutations?

No. It appends one fixed string to every line. For mutations, use a generator such as goaltdns or dnsgen, then resolve with a DNS brute-forcer.

Where does it sit in a Trickest workflow?

As a managed adapter node between two tools whose line formats do not line up. Feed bare lines in, set suffix-string, pass the folder or file out.

Updated Jul 14, 2026

Utilities

Stamp the same trailing token onto every line

Append one string to each line in a folder of files.

Add a file extension to a wordlist Append a path to a host list Reshape a list between two tools

overview

What suffix-file-lines does

Sit suffix-file-lines between a producer of bare lines and any consumer that needs a trailing path, extension, or token.

Operators reach for it when a wordlist needs .php, a host list needs /login, or a name list needs a fixed TLD, without a shell step.

Inputs are folder and suffix-string. For start-of-line stamps use prefix-file-lines; this node only appends.

use cases

Where suffix-file-lines fits

Add a file extension to a wordlist

Suffix every entry with .php, .bak, or .json so a content-discovery stage like ffuf or gobuster tests full filenames instead of bare stems.

Append a path to a host list

Add a route such as /login or /admin to each resolved hostname so httpx or nuclei probe the endpoint rather than the bare host.

Reshape a list between two tools

Bridge a producer that emits bare lines and a consumer that expects a trailing token, with no inline shell node to maintain.

Append a TLD or query string before fuzzing

Tack a fixed TLD onto a name list, or add a query parameter to each URL, so the next node consumes the rows in the shape it needs.

reference

suffix-file-lines inputs and flags

2 inputs

Name	Type	Flag	Description
folder	FOLDER	·	Folder of files whose lines each get the suffix appended.
suffix-string	STRING	·	String appended to the end of every line, such as .php or /login.

Showing key inputs. suffix-file-lines exposes 2 inputs in total.

example

Run suffix-file-lines

suffix-file-lines · command

# append a login path to every host across the foldersuffix-file-lines ./hosts /login

sample output

api.example.com/loginapp.example.com/loginstaging.example.com/logindev.example.com/loginmail.example.com/loginvpn.example.com/loginportal.example.com/loginadmin.example.com/login

guidance

Choosing suffix-file-lines

Use when two stages almost connect but every line is missing a trailing token. Prefer prefix-file-lines to prepend. Prefer a generator like dnsgen when you need mutations, not one fixed suffix.

prefix-file-lines

Mirror utility. Prepends a string to each line instead of appending.

remove-lines-from-file

Filters lines out rather than extending them.

faq

suffix-file-lines questions

Yes. Set suffix-string to .php, .bak, or similar. Every line in every file in the folder gets that ending for content discovery.

Run suffix-file-lines yourself

A host list feeds suffix-file-lines, which appends a token to every line and writes the reshaped list as an output.

Run suffix-file-lines in Trickest Browse the library

Facts on this page come from the live Trickest tool library.