Tail

Category: Text

Status: Registered and callable in the CyberChef 11.3.0 compatibility inventory.

Input / output: string → string

Background: https://wikipedia.org/wiki/Tail_(Unix)

What it does

Like the UNIX tail utility. Gets the last n lines. Optionally you can select all lines after line n by entering a negative value for n. The delimiter can be changed so that instead of lines, fields (i.e. commas) are selected instead.

Note

Status here means the operation name is implemented and callable. It does not by itself promise byte-for-byte parity for every upstream option. See Compatibility and current status for the verified scope and known boundaries.

Arguments and options

Arguments are positional. Keep their order when using bake() or Pipeline.then().

Index	Name	UI type	PyChef default	Accepted values / format
`0`	Delimiter	`option`	`'Line feed'`	`'Line feed'`, `'CRLF'`, `'Space'`, `'Comma'`, `'Semi-colon'`, `'Colon'`, `'Nothing (separate chars)'`
`1`	Number	`number`	`10`	A Python integer or floating-point value

Recipe template

Important

This is a call template built from the documented defaults. Replace placeholder values such as empty keys, paths, patterns, or lookup data before running it.

from pychef import bake

input_value = "example"
args = ['Line feed', 10]
result = bake(input_value, [{"op": 'Tail', "args": args}])
print(result)

Pipeline example

from pychef import Pipeline

args = ['Line feed', 10]
transform = Pipeline().then('Tail', *args)
result = transform("example")

Dedicated operation module

The registered entry point lives in pychef.operations.by_operation.tail. Direct calls receive the input value and a positional argument tuple:

from pychef.operations.by_operation.tail import run

result = run("example", tuple(['Line feed', 10]))

pychef.operations.by_operation.tail.run(value, args)

Run this operation using its shared internal implementation.

Parameters:

value (str | bytes)
args (Sequence[Any])

Return type:

str | bytes