Linux 让 sudo 和 nohup 一起工作

Getting sudo and nohup to work together

提问by Alex Chen

Linux newbie here.

Linux 新手在这里。

I have a perl script which takes two command line inputs. I tried to run it in the background but this is what I got:

我有一个需要两个命令行输入的 perl 脚本。我试图在后台运行它，但这是我得到的：

[~user]$ nohup sudo ./ascii_loader_script.pl 20070502 ctm_20070502.csv &
[2] 19603
[~user]$ nohup: appending output to `nohup.out'

after the system returns "nohup: appending output to `nohup.out'", no new prompt will appear. Then as long as I type in some other command, the shell will tell me that the process is stopped:

系统返回“nohup:appending output to `nohup.out'”后，不会出现新的提示。然后只要我输入一些其他命令，shell 就会告诉我该进程已停止：

[~user]$ nohup sudo ./ascii_loader_script.pl 20070502 ctm_20070502.csv &
[2] 19603
[~user]$ nohup: appending output to `nohup.out'
ls
ascii_loader_script.pl  format_wrds_trd.txt  nohup.out  norm_wrds_trd.cfg
[2]+  Stopped                 nohup sudo ./ascii_loader_script.pl 20070502 ctm_20070502.csv

I've looked at this post and tried to do "sudo date" before executing the command. Still got the same thing. http://www.sudo.ws/pipermail/sudo-users/2003-July/001648.html

我看过这篇文章并尝试在执行命令之前执行“sudo date”。还是得到了同样的东西。 http://www.sudo.ws/pipermail/sudo-users/2003-July/001648.html

采纳答案by Bandiera

The problem here, imho, is not nohup, but background processing sudo.

恕我直言，这里的问题不是 nohup，而是后台处理 sudo。

You are putting the process in background (& at end of command) but probably sudo needs password authentication, and that is why the process stops.

您将进程置于后台（& 在命令末尾），但 sudo 可能需要密码身份验证，这就是进程停止的原因。

Try one of these:

尝试以下方法之一：

1) remove the ampersand from end of command, reply to passord prompt and afterwords put it in background (by typing CTRL-Z - which stops the process and issuing the bg command to send it to background)

1）从命令末尾删除＆符号，回复密码提示和后记将其置于后台（通过键入CTRL-Z - 停止进程并发出bg命令将其发送到后台）

2) Change the /etc/sudoers to not ask for users password by including the line: myusername ALL=(ALL) NOPASSWD: ALL

2）通过包含以下行将 /etc/sudoers 更改为不要求用户密码：myusername ALL=(ALL) NOPASSWD: ALL

If besides the password reply your application waits for other input, then you can pipe the input to the command like this: $ cat responses.txt|sudo mycommand.php

如果除了密码回复之外，您的应用程序还等待其他输入，那么您可以将输入通过管道传递给命令，如下所示： $ cat Responds.txt|sudo mycommand.php

hth

第

回答by dusktreader

The solution is to use the -b flag for sudo to run the command in the background:

解决方案是使用 -b 标志让 sudo 在后台运行命令：

$ sudo -b ./ascii_loader_script.pl 20070502 ctm_20070502.csv

You should only use nohup if you want the program to continue even after you close your current terminal session

如果您希望程序在关闭当前终端会话后继续运行，您应该只使用 nohup

回答by diyism

Try:

尝试：

xterm -e "sudo -b nohup php -S localhost:80 -t /media/malcolm/Workspace/sites &>/dev/null"

When you close xterm, the PHPweb server still alive.
Don't put nohupbefore sudoor else the PHPweb server will be killed after closing xterm.

当您关闭 xterm 时，PHPWeb 服务器仍处于活动状态。
不要放在nohup之前sudo，否则PHP关闭 xterm 后 Web 服务器将被杀死。

回答by Uts

This should work

这应该工作

sudo -b -u userName ./myScript > logFile

I am just curious to understand that can I send this logFile as a email after the ./myScript is successful running in background.

我只是想知道，在 ./myScript 在后台成功运行后，我可以将此日志文件作为电子邮件发送。

回答by Frederic Leitenberger

First of all, you should switch sudoand nohup. And then:

首先，您应该切换sudo和nohup。进而：

if sudo echo Starting ...
then
    sudo nohup <yourProcess> &
fi

The echo Starting ...can be replaced by any command that does not do much. I only use it as dummy command for the sudo.

该echo Starting ...可以通过没有做太多的任何命令来代替。我只将它用作sudo.

By this the sudoin the if-condition triggers the password-check. If it is ok then the sudosession is logged in and the second call will succeed, otherwise the ifwill fail and not execute the actual command.

通过这个sudoif 条件触发密码检查。如果没问题，则sudo会话登录，第二次调用将成功，否则if将失败并且不执行实际命令。

回答by QkiZ

You must use sudo first, nohup second.

您必须先使用 sudo，然后使用 nohup。

sudo nohup ./ascii_loader_script.pl 20070502 ctm_20070502.csv &

回答by DVOPS

I open an editor and typed these lines:

我打开一个编辑器并输入以下几行：

#!/bin/bash
sudo echo Starting ...
sudo -b MyProcess

(Where MyProcessis anything I want to run as superuser.)

（其中MyProcess是我想以超级用户身份运行的任何内容。）

Then I save the file where I want it as MyShellScript.sh .

然后我将文件保存为 MyShellScript.sh 。

Then change the file permissions to allow execution. Then run it in a terminal. the "-b" option tells sudo to run the process separately in the background, so the process keeps running after the terminal session dies.

然后更改文件权限以允许执行。然后在终端中运行它。“-b”选项告诉 sudo 在后台单独运行该进程，因此该进程在终端会话终止后继续运行。

Worked for me in linux-mint.

在 linux-mint 为我工作。

回答by xiaoping378

You can set it as your alias:

您可以将其设置为别名：

sudo sh -c 'nohup openvpn /etc/openvpn/client.ovpn 2>&1 > /dev/null &'

回答by ThomasDr

You can Try

你可以试试

sudo su

and then

进而

nohup ./ascii_loader_script.pl 20070502 ctm_20070502.csv &

instead of

代替

nohup sudo ./ascii_loader_script.pl 20070502 ctm_20070502.csv &