What does error code 10 mean?

Question

FreeBSD

Hello!
This is happening on a 64-bit FreeBSD server.
One particular binary, compiled purely from C source on a BSD server, in some cases aborts without any output and returns code 10, according to the shell message. This does not match the exit code I wrote in the C program.
What does error code 10 mean? I'm running it remotely on a BSD server as a shell command, not inside a bash script. C program compiled using gcc

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Answer 1

See here: https://github.com/freebsd/freebsd/blob/master/sys...
In a program, you can use the strerror() function to return a text message for system errors.
Always handle the return of system functions to avoid such situations.

Answer 2

If this is your program - compile with debug and run in the debugger