Getting sudo and nohup to work together

Question

Linux newbie here.

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:

[~user]$ nohup s         


        

Answer 1

This should work

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.

Answer 2

You must use sudo first, nohup second.

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

Answer 3

I open an editor and typed these lines:

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

(Where MyProcess is anything I want to run as superuser.)

Then I save the file where I want it as 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.

Worked for me in linux-mint.

Answer 4

You can set it as your alias:

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

Answer 5

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

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.

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

Answer 6

Try:

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

When you close xterm, the PHP web server still alive.
Don't put nohup before sudo or else the PHP web server will be killed after closing xterm.