linux exit code 2

Original link: http://codingstandards.iteye.com/blog/836625 (reproduced please specify the source)Description of UseThe exit command exits the current shell and can terminate the current script execution in a shell script.Common parametersFormat:

Note: Exit () is exited, the parameters passed in is the program exit status code, 0 for normal exit, the other means the abnormal exit, generally used-1 or 1, standard C has exit_success and exit_failure two macros, with exit (exit_success) ,

Differences between exit () and _ exit ()   Linux source code # DEFINE _ nr_exit 1 # DEFINE _ nR _ exit _ nr_exit/* from the File Include/asm-i386/unistd. H */"_ NR _" is the prefix for each system call in the Linux source code. Note that there are

1. Graceful exit of the process 1.1.kill-9 PID problemsIt is easy and efficient to force a process to be killed by Kill-9 PID on Linux, so many program stop scripts often choose how to use the kill-9 PID.Whether the Kill-9 PID of Linux or the

The difference between the Exit,_exit-The difference between exit () and _exit () function (Linux system) 2012-03-20 15:19:53Category: LINUX Note: exit () is exit, The passed-in parameter is the status code when the program exits, 0 -1 1 c

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

On the first, straight hit Linux:12 asked 1. What is Linux? Linux is an exotic operating system that is born on the web, growing up on the web, and ripe for networking. In the 1991, Finnish college student Linus Torvalds The idea of developing a

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

Process ExitThe process exit of Linux is divided into two types: normal exit and abnormal exit.1. Normal exitA. Execute return in the main () function.B. Call the exit () functionc. Call the _exit () function  2. Abnormal exitA. Calling the About

The Dameon process is also called the Daemon, in general he has the following 2 characteristics :1. The life cycle is very long, once started, generally will not terminate, until the system is launched, but the Dameon process can be stopped or send