What Does Strace Do in Linux?

strace is a diagnostic, debugging and instructional userspace utility for Linux. It is used to monitor and tamper with interactions between processes and the Linux kernel, which include system calls, signal deliveries, and changes of process state.

What is the use of strace command in Linux?

strace is a powerful command line tool for debugging and trouble shooting programs in Unix-like operating systems such as Linux. It captures and records all system calls made by a process and the signals received by the process.

How does strace Linux work?

strace works by using the ptrace system call which causes the kernel to halt the program being traced each time it enters or exits the kernel via a system call. The tracing program (in this case strace ) can then inspect the state of the program by using ptrace .