rekt

A superfast cross platform port killer tool.

Installation

rekt is available only on Linux and Windows as of now.

From releases (recommended)

Download the latest release for your platform from the releases page.

Using Go (requires Go>=1.25)

go install github.com/shravanasati/rekt@latest

Usage

Find process occupying a port

rekt 8000

Show more information about the process (name, owner)

rekt 8000 -v

Terminate the process

rekt 8000 -t

Kill the process

rekt 8000 -k

You may want to run rekt with sudo permissions to find and kill processes started by users other than you.

Do note that on Linux, --terminate/-t sends SIGTERM and --kill/-k sends SIGKILL. On Windows, the behavior of both flags is identical.

Benchmarks

rekt is consistently 8x faster than fuser and 4x faster than lsof.

Here are results from a run on my PC.

Command	Runs	Average [ms]	User [ms]	System [ms]	Min [ms]	Max [ms]	Relative
rekt 8000	690	3.92 ± 0.40	2.79	8.89	3.33	5.66	1.00 ± 0.00
lsof -i :8000	179	16.74 ± 3.23	3.58	12.18	14.42	38.14	4.27 ± 0.93
fuser 8000/tcp	97	32.00 ± 2.36	11.16	20.48	29.62	38.94	8.16 ± 1.03

You can run these benchmarks yourself using atomic or hyperfine as follows:

1. Start a server in background.

   python -m http.server 8000 &

2. Run the benchmark.

   atomic "fuser 8000/tcp" "lsof -i :8000" "rekt 8000" -w 10

   OR

   hyperfine "fuser 8000/tcp" "lsof -i :8000" "rekt 8000" -w 10 -N