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Daily AlpacaHack

A CTF challenge series with fun puzzles to enjoy every day

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We regularly publish simple, beginner-friendly or educational CTF challenges!

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Today's Challenge

Let's Shut Down Linux

Submissions (latest 3)

SOLVED!

Sep 2, 9:51 PM

SOLVED!

Sep 2, 7:43 PM

SOLVED!

Sep 2, 6:15 PM

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Rows:

Let's Shut Down Linux

Topic: System CallReleased: Sep 3, 2026

14 solves

Medium2.5

by

tan90909090

Let's shut down Linux by specifying 3 arguments to the reboot system call!

Note: During building a docker image using Dockerfile, over 100MB of data will be downloaded and parallel builds will be performed to build a Linux image. Therefore, building the docker image may take several minutes.

lets-shut-down-linux.tar.gz

description solves