NAME | SYNOPSIS | DESCRIPTION | SEE ALSO
#include <sys/wait.h>
When a process waits for status from its children via either the wait or waitpid function, the status returned may be evaluated with the following macros, defined in <sys/wait.h>. These macros evaluate to integral expressions. The stat argument to these macros is the integer value returned from wait or waitpid.
Evaluates to a non-zero value if status was returned for a child process that terminated normally.
If the value of WIFEXITED(stat) is non-zero, this macro evaluates to the exit code that the child process passed to _exit() (see exit(2)) or exit(3C), or the value that the child process returned from main.
Evaluates to a non-zero value if status was returned for a child process that terminated due to the receipt of a signal.
If the value of WIFSIGNALED(stat) is non-zero, this macro evaluates to the number of the signal that caused the termination of the child process.
Evaluates to a non-zero value if status was returned for a child process that is currently stopped.
If the value of WIFSTOPPED(stat) is non-zero, this macro evaluates to the number of the signal that caused the child process to stop.
Evaluates to a non-zero value if status was returned for a child process that has continued.
If the value of WIFSIGNALED (stat) is non-zero, this macro evaluates to a non-zero value if a core image of the terminated child was created.
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO