When we pipe output from one process into another we sort of connect stdout of the first one to stdin of the second. So, to be able to see my giant stack trace, we can for example redirect stderr to stdout. This way we will get both streams into stdin of the next process....
}/* redirect stdin, stdout, and stderr to /dev/null */open("/dev/null", O_RDONLY); open("/dev/null", O_RDWR); open("/dev/null", O_RDWR);// 重定向stdin、stdout、stderr到/dev/null,确保这些常用描述符是打开的// 针对它们的read调用返回0;write调用会由内核丢弃所写数据// 打开这些...
priority=999 ; 进程启动优先级,默认999,值小的优先启动 redirect_stderr=true ; 把stderr重定向到stdout,默认false stdout_logfile_maxbytes=20MB ; stdout 日志文件大小,默认50MB stdout_logfile_backups = 20 ; stdout 日志文件备份数,默认是10 ; stdout 日志文件,需要注意当指定目录不存在时无法正常启动,所以...
priority=999 ; 进程启动优先级,默认999,值小的优先启动 redirect_stderr=true ; 把stderr重定向到stdout,默认false stdout_logfile_maxbytes=20MB ; stdout 日志文件大小,默认50MB stdout_logfile_backups = 20 ; stdout 日志文件备份数,默认是10 ; stdout 日志文件,需要注意当指定目录不存在时无法正常启动,所以...
redirect_stderr=true;把stderr重定向到stdout,默认falsestdout_logfile_maxbytes=20MB;stdout 日志文件大小,默认50MB stdout_logfile_backups=20;stdout 日志文件备份数,默认是10;stdout 日志文件,需要注意当指定目录不存在时无法正常启动,所以需要手动创建目录(supervisord 会自动创建日志文件) ...
$ nohup: ignoring input and redirecting stderr to stdout $ tail -f custom-out.log standard output standard error standard output standard error .. If you log-out of the shell and login again, you’ll still see the custom-script.sh running in the background. ...
redirect_stderr=true ; 把stderr重定向到stdout,默认false stdout_logfile_maxbytes=20MB ; stdout 日志文件大小,默认50MB stdout_logfile_backups = 20 ; stdout 日志文件备份数,默认是10 ; stdout 日志文件,需要注意当指定目录不存在时无法正常启动,所以需要手动创建目录(supervisord 会自动创建日志文件) ...
Now, we can redirect these streams to somewhere else, and our program doesn’t have to know! Irrespective of where the input comes from (keyboard or a text file), for any running process, it’s coming fromstdin. Likewise forstdoutandstderr. We’ll talk more about this when we get to...
daemon_proc = 1; /* for err_XXX() functions */ chdir("/"); /* change working directory */ /* close off file descriptors */ for (i = 0; i < MAXFD; i++) close(i); /* redirect stdin, stdout, and stderr to /dev/null */ ...
redirect stderr and stdout to stderr 1 'represents' stdout and 2 stderr. A little note for seeing this things: with the less command you can view both stdout (which will remain on the buffer) and the stderr that will be printed on the screen, but erased as you try to 'browse' the...