nohup is a POSIX command to ignore the HUP (hangup) signal.

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3
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3answers
35 views

Using `nohup` to Import MySQL Dump on Debian Server

I am trying to import a mysqldump file into my mysql database, but my (putty) connection to the server keeps timing out halfway through. I tried to use nohup . . . . & but this doesn't appear to ...
0
votes
1answer
596 views

Starting Resque worker with script doesnt work, starting by hand does

I am trying to figure out why my process doesn't work if started via a script, but works fine if started by hand. Here's the details: script is a resque worker start script. The script location is ...
7
votes
4answers
6k views

nohup vs. Screen

In the past, I've used nohup to run big background jobs, but I've noticed that a lot of people use Screen in this context. Does Screen provide some kind of functional advantage that I am unaware of, ...
0
votes
2answers
595 views

Kill a nohup mpi process

I have started a program in parallel using the command: nohup mpirun -7 mylongprogram.py & I now want to terminate the program. When I want to kill the process by the command: kill -9 ...
1
vote
0answers
30 views

nohup not working when called from root folder

When i execute nohup command from the same folder it's working fine (server.php is used to listen to a port 7070) root@servername:/var/www/html/admin# nohup php server.php & [4] 2803 ...
1
vote
2answers
47 views

how to use nohup while still sending stderr to the terminal

nohup automatically redirects stderr to stdout, but I want to send it to the terminal (it shows progress). How can I do that?
2
votes
2answers
52 views

stderr gets flushed before stdout, when using file logger

My python code: import sys print "i am a daemon" print "i will be run using nohup" sys.stderr.write("i am an error message inside nohup process\n") When i run the code as python a.py, it shows, i ...
4
votes
3answers
595 views

Why do 'nohup' and 'disown' not work on SoX (invoked as 'play')

I can run this command: $ play mylist.m3u And music plays. I can then press Ctrl-Z to suspend the job, and issue bg to have it run in the background. However, if I then run disown and exit, the ...
0
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0answers
49 views

Avoiding heredoc sh[process_number].* files in /tmp directory

I have a .ksh file which logs into sqlplus and runs some queries. The block of code is something as mentioned below: //Other things done in ksh sqlplus -s @connect.sql << EOF Query1 Query2 ...
1
vote
2answers
5k views

How to know if a background job is finished?

I invoke a script (do_something) in background via another script (do_manythings) as below. nohup do_something & How would I know in the parent script (do_manythings) that the job invoked ...
7
votes
2answers
8k views

Is it possible for nohup to write the output both to the file nohup.out AND to the screen/terminal?

I am using the bash shell. I frequently use nohup to ensure that my processes are not stopped when I close the shell/terminal that started them. I use a syntax like: nohup myprocess When ...
2
votes
1answer
59 views

Get the time when nohup R program finishes

I want to get the time when program finish. But it always show the same time. Here is my shell script. But it always show that START TIME is same as END TIME. START=$(date +"%r") nohup Rscript ...
0
votes
1answer
221 views

nohup, screen and tmux not working when closing connection on yocto linux (intel edison)

I have an Intel Edison with Yocto Linux and standard configurations. It had nohup pre-installed and I managed to install both screen and tmux (by compiling them from sources). Now, I would like to run ...
3
votes
3answers
390 views

Why is chromium-browser killed when I close the terminal despite nohup?

This question is old, and I am still not clear about why. Original question in 2014: In a Gnome Terminal tab, I ran $ nohup chromium-browser & But when I close the terminal tab, ...
1
vote
1answer
92 views

Is there any disadvantage of executing a shell script using nohup?

To execute a shell script in background and without an interruption, we use nohup command. For example: $nohup mytest.sh & Press ALT Press Enter Is there any drawback or disadvantage of this ...
2
votes
1answer
90 views

what are practical uses of stdbuf or nohup?

I have to finish a writeup of a few coreutils commands for a course at the moment, and I can't think of a starting point for a small practical code example that demonstrates the potential uses of ...
15
votes
7answers
54k views

Execute remote commands, completely detaching from the ssh connection

I have 2 computers, localpc and remoteserver. I need localpc to execute some commands on remoteserver. One of the things it needs to do is start a backup script that runs for a number of hours. I ...
0
votes
1answer
83 views

Keep program running after logging out SSH -X, and reopening it later [duplicate]

I need to login to my school computer where I am running an experiment. I am logging via SSH -X since it uses a custom made GUI application. I want to be able open the program, make it start ...
0
votes
0answers
26 views

how can I redirect the grepped output of tail -f to a file? [duplicate]

I want to do this: tail -f /var/log/apache2/access.log | grep 'POST \/review' But I want the output to go to a file and I want this to run constantly for a day or two. I tried a simple script ...
4
votes
1answer
188 views

Why is `setopt nohup` required to make `nohup watch` work in zsh?

In zsh, setopt nohup seems to be required to make nohup work, as follows: # nohup does not work without setopt nohup ➜ /tmp zsh ➜ /tmp nohup watch ls & [1] 31556 nohup: ignoring input and ...
0
votes
1answer
59 views

what is the difference betwwen starting a command with nohup and &? [duplicate]

nohub and & seem to have a similar effect on the surface, they both start processes without occupying the shell from which they have been started, how do they differ on a deeper level?
13
votes
3answers
7k views

When do you need 'nohup' if you're already forking using '&'?

First this question is related but definitely not the same as this very nice question: Difference between nohup, disown and & I want to understand something: when I do '&', I'm forking ...
3
votes
1answer
116 views

What is the difference between letting nohup append to 'nohup.out' and explicitly redirecting it to a file?

Consider the following scenario: tail.sh: #!/bin/bash tail -f test.txt invoke.sh: #!/bin/bash nohup ./tail.sh & invoke_explicitredirect.sh: #!/bin/bash nohup ./tail.sh > out.log & ...
3
votes
2answers
3k views

What does a “[1]+ Exit 1” response mean?

I ran this command to try and get my python program to run in the background and let me exit the SSH connection I am using: nohup python files.py >> files.log & I then check ps to check ...
9
votes
1answer
5k views

Why does 'nohup command >& /dev/null' seem to “work” in some shells?

I edited an answer on Ask Ubuntu that was suggesting the following nohup gedit >& /dev/null & When they actually meant nohup gedit &> /dev/null & The latter correctly ...
1
vote
1answer
493 views

How to keep running a process in Android when disconnecting adb terminal? command “nohup” not found

I'm trying to analyze the reason for random reboots of my phone (see here). Therefore I wanted to record the logcat and kernel messages till the restart to see the logs even after the usb disconnects, ...
2
votes
2answers
243 views

How to read from a named pipe after the writer process exits?

I want to use named pipes as asynchrnonous task queues (JMS-like, perhaps). For example, suppose a client sends some data that I wish to insert into a database, but I want the client to disconnect ...
1
vote
1answer
382 views

Running script need two command with nohup

I want to run a script with nohup because it takes long time but it needs a password to run. how can I write the command using nohup. For example to run the script interactively I first run php hat ...
-3
votes
4answers
934 views

Why doesn't the nohup command seem to be working?

Please let me know any example that shows nohup is working for a program even after logout. I tried using it without the nohup command to run a script in the background and it seems to be working even ...
6
votes
2answers
7k views

Having an rsync job complete after closing SSH connection

I am transferring a large amount of files from one computer to another using rsync. I am doing this by SSHing into the source computer and executing a command like this: sudo rsync ssh ...
0
votes
1answer
89 views

Why process wasn't killed after closing SSH connection

I launched this command via SSH on a Debian server: watch --precise -n 1 top -b -n 1 -p 27330 | tail -n 1 | awk "{print \$9}" >> 27330.log & After a while I quit my terminal. When I ...
22
votes
4answers
14k views

How to Execute multiple command using nohup

I want to execute multiple command using nohup, And each command should execute after previous command, I used this command for example: nohup wget $url && wget $url2 > /dev/null ...
0
votes
1answer
131 views

SSH to a server, execute update command that continues even after logging off the ssh session

Okay I saw a lot of questions like this, but almost all have either theoretical answers which do clear the concept but I am still not able to put it up in code. What I want to achieve using a bash ...
4
votes
1answer
126 views

How to completely detach a process

I want to spawn a process and run it at the top level so that when the shell exits, the process keeps running. I had mistakenly thought that nohup would do this, but when I exit from the shell (the ...
0
votes
1answer
518 views

Keep a PHP script running indefinitely on a Web Server [duplicate]

I'm having a pretty big issue that I need to get resolved. Basically I have little experience using Linux and I've been working on a project recentley that involves me having to use quite a lot of ...
1
vote
3answers
2k views

Using nohup to keep a script running indefinitely

I am very new to Linux and I've only been using it to SSH to my web server using Putty. The issue I am having is this: Basically I've got 2 php scripts. One get_tweets.php constantly listens for ...
1
vote
1answer
1k views

How do I Nohup an interactive shell-script?

My Script is having 2 command-line arguments and then just couple of questions, after these questions the script will run for itself, I'm able to pass the command-line argument by just doing, ...
2
votes
1answer
117 views

Running services without sudo

I want to run a nodeJS web server on a couple of machines which I don't have sudo access on. What would be a good way to do this? The two requirements are: running the service without being ...
4
votes
0answers
216 views

How do I execute in background / return early?

For reference, I'm using phpseclib to control a remote SSH server using the 'root' account. I have to start/stop a java process which is ran in the background. Stopping works fine with killall java ...
0
votes
1answer
900 views

aix ksh start weblogic server without nohup.out and return to underlying script

I am writing a ksh script, in which I want to start weblogic server in background and return to underlying script immediately(continue to execute the script) like this: nohup ...
6
votes
4answers
11k views

How to totally fork a shell command that is using redirection

I've written quite a few shell scripts over the years (but I'm certainly not a sysadmin) and there's something that always caused me troubles: how can I fork a shell command immune to hangups in the ...
0
votes
3answers
2k views

Kill nohup command on cluster

Last night I launched a command via nohup on a cluster and then closed the connection. Today I would like to kill this job (I know it's still running because output is being generated in an output ...
3
votes
3answers
10k views

Why use “nohup &” rather than “exec &”

I know that, nohup being a binary, it can be reached from any shell. But the exec built-in probably exists in every shell. Is there a reason to prefer one of them, to the other?
0
votes
1answer
3k views

Running both sudo and nohup on a command

There is a complex command that requires sudo: sudo command par1 666 /home/me/... I need to launch it so that it persists after I log off from terminal (SSH). I have discovered that nohup command ...
1
vote
1answer
350 views

nodejs sub processes in nohup bash script lock up

I run scripts with nohup that contain a list of a few hundred to a few thousand nodejs commands. These nodejs sub processes sync data from mysql and salesforce to couchdb. $ nohup ...
6
votes
4answers
2k views

Process java still being killed

I need to run a java program on my university servers. I'm remotely logging in through their servers via ssh So I used nohup like so: nohup java -jar project.jar & However when I logout and ...
3
votes
3answers
299 views

Log to multiple files while process in background (nohoup)

I have bash script that logs to two log files in parallel. echo "$(date) | [STATE] Activating IP forwarding" >> $logsPath$logFileName echo $(date +"%Y-%m-%d %H:%M")","$previousState >> ...
2
votes
3answers
1k views

netcat doesn't work as expected when detached from console with nohup (Ubuntu/Debian 64bit)

I'm trying to leave netcat running and close the ssh session (even stop the ssh daemon). But it then exits before all of the data is written. I'm testing in a non-ssh (local) console: nohup nc -l -p ...
1
vote
1answer
465 views

service killed at ssh hangup [duplicate]

If I use ssh to run some command in background, that command gets killed as soon an ssh hangs up: ssh localhost -t "bash -c '(for i in 1 2 3 4 5; do sleep \$i;done)&'"; ps x|grep sleep This ...
5
votes
3answers
378 views

Perl alternative for screen/tmux for the UNIX world?

What happens when a screen/tmux-like solution is needed (to leave a process running for a long time, but not with nohup because interaction could be needed) - but screen/tmux is not available on the ...