The strace command line utility

The strace utility enables you to see what happens behind the scenes when you execute a program or a script. Strictly speaking, strace traces the system calls and signals of an executable program and displays them on your screen. Using strace against pycp.py displays the following type of information: The aforementioned output reveals that your pycp.py script is executed as C functions and C system calls because this is the only way to communicate with the Linux kernel. Nevertheless, writing the same program in C would have required many more lines of code and many more hours of debugging.…

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The Python Book (Digital) - 1 Issue, The Python Book 16th Edition

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