Challenges | iximiuz Labs

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Easy, on Linux

Run a Glibc-incompatible Binary Using chroot

by Başar Subaşı

Export an Alpine container rootfs using crane, set up a chroot environment, and execute a musl-linked binary that fails to run on the host system.

#chroot #musl #glibc #crane #alpine

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Easy, on Linux, Programming

Kill a Stubborn Process with SIGKILL

by Başar Subaşı

A stubborn process is running on the system, kill it :)

#signals #sigkill #golang #kill #process

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Easy, on Programming, Linux

Utilize POSIX Threads for Concurrency

by Başar Subaşı

Refactor a slow, single-threaded C file downloader that fetches files sequentially into a multi-threaded program using POSIX Threads (pthreads) to achieve concurrent downloads.

#c #pthreads #threads #concurrency #gcc

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Easy, on Programming, Linux

Create a Process from Scratch Using Syscalls

by Başar Subaşı

Write a C program that calls fork() to clone a process and execve() to execute a command, then print and retrieve the child process PID.

#c #process #syscalls #fork #execve

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Easy, on Programming, Linux

Count Optimized Assembly Instructions

by Başar Subaşı

Compile a small C loop with -O2 -S, inspect the generated assembly, report how many add instructions gcc produced and see how much it has optimized the equasion.

#c #gcc #assembly #optimization

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Easy, on Programming, Linux

Inspect a Preprocessor Macro Expansion

by Başar Subaşı

Run gcc -E on a small C program and find the exact line where the preprocessor expanded a macro into a printf call.

#c #gcc #preprocessor #macros

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Medium, on Programming, Linux

Write a C Program Without a main() Function

by Başar Subaşı

Produce a valid ELF binary that runs and exits cleanly, but does not define a main() function.

#c #gcc #assembly #linker #elf