What strace does? What about ltrace?

Strace is a debugging tool that is used to monitor the system calls made by a process. It allows you to trace the execution of a process and see the system calls it makes, as well as the signals it receives. This can be useful for diagnosing issues with a process, such as identifying why it is hanging or crashing.

Ltrace, on the other hand, is a similar tool that is used to trace the library calls made by a process. It allows you to see the function calls made by a process to shared libraries, as well as the arguments passed to those functions. This can be useful for diagnosing issues with a process that involve library calls, such as identifying why a particular library is causing a problem.