Executing shell script with system() returns 256. What does that mean?

Question

I\'ve written a shell script to soft-restart HAProxy (reverse proxy). Executing the script from the shell works. But I want a daemon to execute the script. That doesn\'t wor

Answer 1

Unless system returns -1 its return value is of the same format as the status value from the wait family of system calls (man 2 wait). There are macros to help you interpret this status:

man 3 wait

Lists these macros and what they tell you.