ltrace

If strace shows what the kernel saw, ltrace shows what userland asked its libraries to do.

When to use ltrace

Use ltrace when you need to:

• watch libc/API usage such as strcmp, fopen, memcpy, or system
• infer control-flow choices from arguments and return values
• identify likely string checks, password comparisons, or parsing logic
• complement strace with a friendlier view of dynamic library behavior

Quick Start

# Trace library calls
ltrace ./chall