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Linux / Unix Command: daemon
Command Library


daemon - run in the background  


#include <unistd.h>

int daemon(int nochdir, int noclose);  


The daemon() function is for programs wishing to detach themselves from the controlling terminal and run in the background as system daemons.

Unless the argument nochdir is non-zero, daemon() changes the current working directory to the root ("/").

Unless the argument noclose is non-zero, daemon() will redirect standard input, standard output and standard error to /dev/null.  


(This function forks, and if the fork() succeeds, the father does _exit(0), so that further errors are seen by the child only.) On success zero will be returned. If an error occurs, daemon() returns -1 and sets the global variable errno to any of the errors specified for the library functions fork(2) and setsid(2).  


fork(2), setsid(2)  

Important: Use the man command (% man) to see how a command is used on your particular computer.

>> Linux/Unix Command Library

>> Shell Command Library

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