#include <stdio.h>

#include <string.h>

int main(){

        FILE *fp = fopen("./1.txt","a+");

        if(fp==){

                printf("can't open file\n");

                return ;

        }

        int ix = ;

        for(;;ix++){

                fseek(fp,,SEEK_END);

                char s_add_arr[];

                memset(s_add_arr,'\0',);

                sprintf(s_add_arr,"%i\n",ix);

                fwrite(s_add_arr,strlen(s_add_arr),,fp);

                sleep();

        }

        fclose(fp);

        return ;

}

[program:test]

command=/home/jingchanglin/code/test/test

autostart=true

autorestart=true

startsecs=

priority=

redirect_stderr=true

stdout_logfile_maxbytes=50MB

stdout_logfile_backups=

stdout_logfile=/home/jingchanglin/code/test/app.log

[root@localhost]# supervisorctl

sshd                             RUNNING   pid , uptime ::

test                             RUNNING   pid , uptime ::

supervisor> help

default commands (type help <topic>):

=====================================

add    exit      open  reload  restart   start   tail

avail  fg        pid   remove  shutdown  status  update

clear  maintail  quit  reread  signal    stop    version

supervisor>