exit status 255

Write a Hello World: Filename:main.c#include int Main (void) {printf ("Hello wolrd!\n");   Return (-1); } Compile execution: gcc main.c &&./a.out Now let's see what is the return value of the previous execution in the current shell, which is "1"?

The exit and exit status codes exit are used to end a script, just like in C. it also returns a value, which is passed to the parent process of the script. The parent process uses this value for further processing. each command returns an exit

Exit and exit Status Codes Exit is used to end a script, just like in C. it also returns a value, which is passed to the parent process of the script. The parent process uses this value for further processing. Each command returns an exit status

Just like what is the difference between the following code {code...} and {code? Humbly ask the experts for advice, just like The following code Echo 'configuration error'; exit (3); // Status 3 indicates exit due to configuration error And // Exit

Linux provides a special variable $ to save the exit status code of the last executed command. For commands that need to be checked, you must view or use the $? variable immediately after it has been run. Its value becomes the exit status code of

1. IntruductionExitmakeShell(script) to exit with a specified status value, Execute without parametersExitwhen, Shellor the script exits with the status value of the last execution command. Shellbefore exiting, Trapcan huntEXITsignal. 0indicates

Linux Shell Bash with special meaning exit code purpose descriptionThe exit command exits the current shell and can terminate the current script execution in a shell script.Common parametersFormat: Exit nExit. Set the exit code to N. (cause the

Process 1 is the main first process init of all processes How to view the process: PS uax # Include # Include # Include # Include Int main (){Pid_t PID;Int A = 8;Printf ("current process ID: % d \ n", getpid ());PID = fork ();If (pid> 0) // What

Now I've written a Hello World program to take a look at it: Filename:main.c #include int main (void) { printf ("Hello wolrd!\n"); return (-); } Compile execution: gcc main.c &&/a.out Now let's take a look at the return

Let's talk about PHP's die and exit. Today, some friends say there is a difference between exit and die. Do I say that die is not the alias of exit? To prove my point of view, I flipped through the PHP source code. in zend_language_scanner.l, it is