Linux background Execution nohup command, terminal disconnect no impact __linux

Source: Internet
Author: User
Nohup/root/ &

Prompt after carriage return in shell:

[~]$ appending output to Nohup.out
The standard output of the original program is automatically redirected to the Nohup.out file in the current directory, which plays the role of log.
The program runs unaffected after disconnecting from the SSH connection. has been validated

Use jobs to view tasks.

The following is transferred from:


Purpose: To run the command without suspending it.

Syntax: Nohup Command [Arg ...] [&]

Whether or not the output of the Nohup command is redirected to the terminal, the output is appended to the Nohup.out file in the current directory.

If the nohup.out file for the current directory is not writable, the output is redirected to the $HOME/nohup.out file.

If no files can be created or opened for appending, the command specified by the command argument is not callable.      Exit Status: This command returns the following export value: 126 You can find but not invoke the command specified by the command parameter.      The 127 nohup command has an error or cannot find the command specified by the command parameter. Otherwise, the exit status of the Nohup command is the command parameter that specifies the exit state of the commands.


Use: Run in the background

Generally two one

Nohup Command &


1 Nohup/usr/local/node/bin/node/www/im/chat.js >>/usr/local/node/output.log 2>&1 &

Process number 7585

To view a running background process

(1) jobs-l

Jobs command only to see the current terminal effective, close the terminal, in another terminal jobs can not see the background running program, at this time using PS (Process view command)

(2) Ps-ef

1 Ps-aux|grep Chat.js
A: Show All Programs 
 u: Display x in user-oriented format 
 : Show All Programs, not by terminals


With Ps-def | The grep lookup process is convenient, and the last line will always grep itself

Use the GREP-V parameter to exclude the grep command

1 Ps-aux|grep chat.js| Grep-v grep

And then use awk to extract the process ID.

1 Ps-aux|grep chat.js| Grep-v grep | awk ' {print $} '

3. If a process does not come up, it may be that a port is occupied

To view a process that uses a port

1 lsof-i:8090

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.