General :: Sending Remote Command To Background Process + Out Log?
Feb 1, 2010
Because of my English skills I'll try to explain this subject as best I can, thank you for understanding. Fisrt of all, I am running some program on my slackware in background (using standard method - &). I need to make a script, which allows sending command to this process on my machine from another one. Furthermore this program have to be logged out (standard output f.e. ./myprogram > log.out.txt).It might be a separate Program A which runs my Program B but it cannot be screen, because it is not working like I'd like to and it cannot be java, because it's slow and working not the best so to speak
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Apr 30, 2011
It's my first post and think not last here. I'm new to Linux system ( had a bit of unix programming at school but forgot already ). Please, take a good care of nooby me Now, let's get to the point
I have CentOS installed on one of my machnce, its my PHP development server. I also wanted to run a Minecraft server on it. I would like to skip autostart with init.d thing and be able to control it's run manually, but remotely. Thing is, when i log via putty to server and start server the server output is in terminal. When I close puty, ran application closes also. So I need to have putty window ran all the time.
So, since many programs can be run as background task (like httpd). Is there a way to log via putty. Start application and send it to process... log out of putty ( and application doesn't shut down with putty)?
Also, would be nice if I was possible to log to putty and switch to that application, so i could see server output, info and Issue commands. Basically, I want to start a service and be able to manage it via putty. and not close it when i terminate putty.
PS: I have installed Windows on CentOS server. Is there a way to issue a system start without loading whole GUI thing? When I was installing it I thought it would be easier to manage it with GUI, but now loading it only eats system resources and i unplugged monitor and mouse nad manage it only from Putty
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Oct 5, 2010
The first call to "somefunction" works as expected. The function prints "endfunction" and a process in background sleeps 30 seconds. In the second call I thought it should work in the same way, but the script sleeps 30 seconds before it prints "endfunction".Does someone know the reason of this behavior? Is there another way to do a command substitution of a function that has a background process without have to waiting for that process?
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Sep 8, 2010
Code:
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
[code]....
Description of what the code does or what i intended to do:
1. Created a child process from parent process using 'fork()'
2. Sent a signal 'SIGALRM' from child process to parent process using 'sigqueue' function.
(The Third parameter of 'siqueue' function contains the message (message msg) which the child process wants to send to the parent process.'msg' is a stucture instance containing a) pid of child and b) string) 5. Print the 'msg' sent by child process inside the signal handler function 'sig_action_function' of the parent process I am getting some junk value when this line is executed
Code:
printf("%d
",msg->cpid);
I expected to get the pid of child process, which the child process sent to parent process through the signal.
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Oct 26, 2010
i have ported linux into arm and i want to run two background process on target
i have two c programs a.c and b.c
i have cross compiled them as
arm-linux-gcc -o a a.c
[code]...
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Nov 16, 2010
Could you tell me how can I run a process in the background?
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Feb 25, 2011
How is it done?Right now its just getting written in a local text file(not /var/../.., not using syslog at all).and every day a new file is being created
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Jan 17, 2011
I know of terminating a command with & and then moving it into the background by pressing Ctrl-Z and then bg [pid], and I also know of nohup. But say you started a process that turned out to take much longer than one expected, is there a way of pulling, so to speak, this process from another terminal screen into the background so that even if I log off from the server the process would continue?
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Apr 11, 2011
I run
nohup bash -c "while [ true ]; do echo test; done"
from PuTTy SSH client but after this process is not runned in background instead nohup keeps to be foreground process in shell.
SW version: nohup (GNU coreutils) 8.5
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Mar 5, 2011
i want to send a running process to background .. normal commands like sleep i can able to move easily to bg .
# sleep 10
#Ctrl+z
#bg
[code]...
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Feb 23, 2011
Is there some way to see only the process running in the background?
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Jan 14, 2011
Is there any way to run a long process in background so that it still remain in running state even if the user logout the system.
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Mar 10, 2011
How do you move a running process to the background? For example, type the command sleep 60 on the command line and try moving that process to the background.
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May 17, 2010
I am trying to solve one problem: When i run my process in background it hogs around 96% of CPU. But when ran in foreground, CPU utilization is almost zero. Is there any difference b/n a background and a foreground process wrto CPU utilization?
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May 30, 2011
How the dhclient retry working(Background Process).
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Feb 9, 2011
I have 3 processes to be executed in a particular sequence.
ProcessA
ProcessB
ProcessC
The requirement is that all the processes should run as background processes.
ProcessA talks to ProcessB and ProcessC using sockets.
ProcessB talsk to ProcessA only using sockets.
ProcessC talsk to ProcessA only using sockets.
[Code].....
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Aug 26, 2009
I wonder how one can, if at all, run an X program in the background *in an emulator sub-shell process*. What I mean is to launch a program in an emulator, e.g, by xterm -e gedit
but with gedit (in this example) running in the background from inside the xterm sub-process, so that the xterm will accept other commands. In the above, gedit will run in the foreground, and of course, if you do
xterm -e gedit &
then xterm will run in the background, not gedit.In short, I would like to achieve the same thing as "gedit &" as you manually do in xterm, but from another shell. What I aim to do is write an X init script to achieve this result (to have the emulator open and a program or two running from it, in the background, at the X startup).
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May 3, 2011
I'm using Linux 11.04 and just installed the most recent version of Postfix. I'm trying to send a simple email (through a relay) but when I run the command
sendmail davea@mydomain.com FROM: fromemail@gmail.com SUBJECT: hello world this is a test email .
It just hangs there. There is nothing in /var/log/mail.log or in any of its accompanying files.
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Oct 16, 2010
so this one baffles me. I'm trying to get a script to do internal speed tests on demand. I'm using iperf. The bash commands are below.
Code:
#!/bin/bash
set -ax
[code]....
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Feb 14, 2010
I received the following output from an rsync (3.0.0) command that was executed:
sending incremental file list
sent 77214 bytes received 484 bytes 155396.00 bytes/sec
total size is 254531170 speedup is 3275.90
What does "sending incremental file list" mean?
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Jun 11, 2010
Can I make my messages directly appear at client from server? Normally we type
tailf /var/log/messages
to see messages sent by other machine. So can I send my messages directly at command prompt?
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Dec 17, 2010
I'm am not remotely familiar with the linux operating sytem and just need a simple 'cut and paste solution' that will allow me to send .gz files as mail attachments, from the command line.Recently I moved my website to new hosting company, they are using cpanel and I have set up a couple of commands; the cpanel scheduler runs them for me as required.
1.creates an mysql dump and saves it to folder ( in root of my space )Works fine.2. delete the file created above, after 15 mins. Also works fineWhat I really want to do is email the .gz to myself before it is deleted, this is were I am stuck.This is possible ( I believe ) but it is beyond my understanding and ability to write the scipt/command that will make this happen.Please make any instructions really simple and clear as I am really new to this.on the server and this information is provided below and may be helpful to you (but I certainly to not know anything about this type of stuff)
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Jan 28, 2010
Is is possible to move a process from one shell to another (local to remote)
e.g.
if
my_code.sh &
#jobs
[1]- Running my_code.sh &
was started on one remote shell is it possible to move it to the foreground on another shell as root or another user?
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Jan 17, 2011
how to get the status of background command in bash script
supose , rm 1 &
rm 2
how to get status of rm 1 command
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May 9, 2011
Up until now I've been using plink to remotely compile a project I'm working on. But recently the administrator from the remote server updated the distribution and messed up some configurations. My project has a lot of scripts written for tc shell (tcsh), and now the default shell is bash. There is no way to change this. Another problem is that now I need to run newgrp to change my default user group.
So... to work around this problem I've changed my .bashrc to run newgrp and then tcsh. If I do a normal connection using SSH, everything works as expected, but when using plink, or SSH to remotely execute commands, the shell gets stuck on the newgrp command. I think it's because both applications need a return value from newgrp to send the command I need to execute. Remotely running scripts that call a shell also get stuck like newgrp (newgrp also opens a new shell and that's why it gets stuck) my .bashrc is as follows:
Code:
user_grp=`id -g`
if [ $user_grp != 4919 ]; then
newgrp new_group_id
else
[code]....
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May 5, 2011
sometimes i just want to stay in console and not start kde. But i do not know how to play music backgroundly
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Feb 3, 2011
I'm writing a script that performs backups from partitions on remote servers. I used to do this with ssh, but that seems to be somewhat slow, so I switched to netcat.I start a listener on the receiving server (which runs the script) like this:netcat -l -p 7000 | dd of=imagefile &and then I make the remote and start a dd piped to netcat. This works quite well started manually and the listener is waiting in the background. However, when I have cron run the same script to automate it, the netcat listener is not started, probably because the "&" thing does not work (or there is something with the piping that behaves differently then)
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Jun 20, 2010
When I add the line (sleep 5 ) & in the script then the "while read" loop does not read all lines from the file, but only prints the first line.But when I remove the ( sleep 5 ) & from the script, then the script prints all lines as defined in the file.And how to solve the problem? I want to create a new process (for which the sleep is just an example) in the while loop:
$ more test
#!/bin/ksh
while read -r line ; do
[code]....
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Feb 16, 2010
How can I run a job in background using putty? I'm try to run yum update but it will take some time. if I close putty the process will interrupt.
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Jun 13, 2011
I just got control over a server that was hacked several months back. The other day we started receiving rejected emails sent from my server to a yahoo email address that is no longer active that contained users login information. I am trying to find the process that is sending these emails. So far its been like finding a needle in a haystack. The email that is being sent is appending the login information each time it is sent so there must be a local file that contains this information. I have tried using grep and find without any luck.
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