I have a long-running process that was started in bash terminal on Debian. Unfortunately it wasn't started inside screen.
Is there a way to disconnect this process from current console and connect to it from screen?
I noticed that if I bring up an openvpn client connection with the $openvpn client.ovpn command from console, I cannot get out of it.Even if I close the console it was started from it remains on.I tries a bunch of stuff, that all ultimately failed, and eventually rebooted.
View 1 Replies View RelatedI 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].....
How do I change the screen blanking behavior on Linux virtual terminals?
For example, if I switch to a VT from X, login, and leave the system alone for 5 minutes or so, the screen will blank like a screensaver. It comes back with any keypress, like a screensaver.
Mostly I just want to change the timeout, but I'm also interested in other settings.
If it helps, one of my systems is running Ubuntu 10.04 with the stock graphics drivers. fbset shows the console using the radeondrmfb framebuffer device.
I want to write an operating system of my own ! I've started studying Minix. For getting started I wanted to know is there a way to write and add a background process [printing 'hello'] in the Minix operating system ?
View 7 Replies View RelatedWhenever someone copies a data Our system get very slow. Load average of system starts increasing. How would i find which process is causing the same. I have tried following top 10 CPU utilizing process command but it didn't help much.
Code:
ps -auxf | sort -nr -k 3 | head -10
My distribution detail.
Code:
# lsb_release -a
LSB Version: :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID: EnterpriseEnterpriseServer
[code]....
I am working on a light version of linux for no particular reason other than to see how small I could make it. I was wondering if INIT was necessary, or if I could perform all of the INIT-related tasks (fsck, unmounting, etc) by hand/bash scripts?
I do not need multi-user functionality (Or much of anything for that matter). I started off with a Gentoo base 2.0.2 Install with kernel 2.6.38.
I have forgotten my administrative password and am locked out of my system. I have an HP Mini 1120NR and I am running Edubuntu software. I cannot remember which key I need to press during the restart process to bring up the system restore/recovery option.
View 9 Replies View RelatedI am writing a script that tells me which process consumes the most memory in the system this is what I have but I keep getting an error:
#! /bin/bash
# Autor: Jose miguel Colella
# Descripcion: Que proceso consume mas memoria
ps -e -o %mem -o args | sort -k 1 | tail -n2 | head -n1 | cut -d -f 3
I keep getting this message: cut: delimiter mist be a single character
I'm writing a C++ application and need to work with process substitution in the Bash shell. I'm trying to find a way to validate the paths passed as arguments to my program, some of which point to FIFO files created by process substitution.
Is there a shell (or C++) way that I can check if the system creates these files in /dev/fd or if they are created somewhere else?
To get the kernel messages of new java process, i refer the details from /proc/<java pid>/stat and /proc/<java pid>/statm files. For some java processes, I didn't find any details in the /proc/<java pid>/statm file. It has only 7 number of 0s. But /proc/<java pid>/stat file has the details. And also this kind of process will have the life time of nearly 1 minute.
Kernel version using: Linux-2.6.18-8.1.8.el5 Is there any possibility of java process without the memory details in the /proc/<java pid>/statm file? If it is possible, how to know the memory related details of that processes?
I have minor problem with upgrading a hard drive. I am running an old pentium lll with two hard drives. On the first hard drive I have two partitions of around 90GB each. On the first partition is installed winXP and on the second partition I have Suse 10.3, both booted by grub and living happily side by side. My second hard drive (which is formatted for windows is only 4GB.
My problem arises when I try to replace the 4GB with a 80Gb hard drive. When I disconnect the 4GB drive the system fails to boot up and complains with error 21.
I installed slackware 12.1 from files i downloaded and converted to cd (images). There are six "disks" i downloaded from the slackware site and converted to images via a homemade .cmd in windows xp and then burned using imgburn.
I partitioned my hd (canibalized from an acquaintance's emachine and connected it to my desktop (1G ram, 2Ghz processor). Booted from disk 1 and fomatted the 80G HD for 2 partitions of linuxswapable at 2G apeice and 2 partitions of bootable linux. (Because i want to try another distro later). I ran the setup installing most everything and all seemed to go well. After i exited setup and restarted, it identifed the cd/hd as normal and then went into some sort of recovery mode with the emachine logo call pcangel, after which it tells me.
STOP: c0000021a (fatal system error) The session manager initialization system process terminated unexpectedly with a status of 0xc000003a (0x00000000 0x00000000). the system has been shut down. So, is this indeed an xp error message, and if so, why am i getting it after formatting everything?
I am checking something out in my connection and I just wanted to ask, is there a way to auto-disconnect and connect from the internet.For example say I want to disconnect now and reconnect to the internet in 0.05 seconds, is there any program that does that on Fedora Linux?
View 1 Replies View RelatedI'm using openvpn under linux OS which is Fedora Core 14, in the folder "/etc/openvpn" i put 5 files which belongs to the network server that I should connect to, files are :
two files with the extension ".crt"
two files with the extension ".key"
one file with the extension ".conf"
Now, when I issue the following command (as root) :
Code:
/etc/init.d/openvpn start
It asks for my username & password to the network server, & after I entered the required authentication information, I successfully login, but I get disconnected automatically after two or three seconds.
- I connect to the network without any disconnection or problems under windows
- I use openvpn version "openvpn-2.1.1-2.fc13.i686"
- there was a bug in my OS "Fedora core 14" which is that I cannot activate or deactivate any ethernet cards, which solved by disabling NetworkManager in all run levels
- I disabled iptables
- I disabled selinux
- I got this error in /var/log/messages file when I disconnect from the openvpn network "
Jan 15 21:45:15 ViRuS openvpn[4143]: script failed: could not execute external program
Jan 15 21:45:15 ViRuS openvpn[4143]: Exiting
Jan 15 21:45:15 ViRuS avahi-daemon[1494]: Withdrawing workstation service for tun0.
- I couldn't find the file called "/etc/openvpn/update-resolv-conf"
I have two questions :
1) Is it possible to truncate the file content , not to drop the file ? i.e, I want to just delete a file's content only, not to drop the file .
2) I can find the connectd user using command 'w' or 'who' . Now How can I force disconnect a session from the list of 'w'/'who' command ?
I installed Fedora Linux and I am using GNOME. I've created a vpn connection and is connected to the server without problem (Please see attached photos); But after being connected, Upon opening the site ,Vpn will automatically disconnect.
View 1 Replies View Relatedi have installed ubuntu 11.04 linux by wubi (windows 7 ultimate is the other operating system). after some logins it started disconnect from internet.
View 11 Replies View RelatedIf I ssh to a remote machine and then lose internet connectivity, the session freezes. I can't control-c or otherwise abort and go back to my local xterm or terminal prompt but if I wait several minutes it will do so.
There must be some way to force it to abort the remote ssh session when connectivity is lost. I'm on a Mac but I believe this happens on cygwin or linux as well.
I've just started experimenting with SSH tunnels. I wanted a way to connect to MySQL on our website VPS but wanted the connection encrypted rather than just using PHP's mysql_connect() function and connecting to the remote IP. This seems to be working great. I'm also looking into autossh to make sure that the tunnel gets reconnected when it drops.is there a command/utility that can list the currently active SSH tunnels? Be great if there was a way of terminating an active tunnel through a command as well. Or is it a case of manually digging through the process list and killing the specific PID like I have been?
View 1 Replies View RelatedI have mounted an NFS share with ISO images on my kvm Server. If i connect such a iso to a VM (using virt-manager) for installing a operating system i get the following error on startup: Error starting domain: internal error Process exited while reading console log output: char device redirected to /dev/pts/1 qemu: could not open disk image /mnt/iso/public/Linux/Distributions/Debian/debian-504-amd64-netinst.iso: Permission denied
The problem is definitly that kvm (or qemu or libvirt-bin, i don't know) tries to set permissions (rwx owner for libvirt-qemu, --- for kvm group, --- for other) on the file, although it has read permissions. Is it possible to change this behavior?
I'm thrilled using wicd to connect to wireless networks. But when I suspend my laptop using the special keys, I just want to disconnect from wireless without having to use any kind of GUI or curses user interface. It says in the documentation that wicd works by sending DBUS messages, so presumably it's possible to write a command that talks to the daemon directly.But I can't figure out how.Does anybody know by means of what shell command I can tell the wicd daemon to disconnect me from my wireless network?
View 2 Replies View RelatedI am using tcp for data transmission between 2pcs running linux.During transmission, I have noticed that if I unplug the network cable and reinsert it quickly,connection is not lost(same as i expect)and the sender start to resend the packet after 5s(what i expect is that network packets sent immediately after quick physical disconnect and reconnect).My question is can i reduce 5s to 0s(resend immediately after network cable reconnect)?Any parameters(tcp rto,txqueuelength,..) can be modified to achieve this condition?
View 10 Replies View Relatedone tell me the internal working of kill command. that is how it kills a process internally or from where it picks file to continue its process.
View 3 Replies View RelatedI have a high priority service that I start with sudo nice -n -10 process. This process does not need superuser rights though, except for the priority elevation. But nice requires superuser privileges to elevate priority.
View 3 Replies View Relatedsend the details raid configuration how to use in linux el5 and how to indentify the raid degrade process and how to rebuilt the process.
View 4 Replies View RelatedCode:
#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.
Is there any way to monitor one process' CPU usage and RAM usage over time on Linux? I am trying to change to a cheaper VPS and need to work out what level of CPU and RAM I need!
View 2 Replies View Relatedas we all know Process Scheduler does Process scheduling and its a process as well. I was just wondering that if this happens then the Process "Process Scheduler" should be a part of Process queue as well.
So if there are 5 process are there in Process queue & process scheduler is administrating them then since its also a process, once it puts a process under RUN state it should itself go inside queue because at one instant only one process can get executed on a processor. This is quite confusing for me. Please help me out. I tried to search on this but could not find any relevant topics.
How do you find the parent process of zombie processes?
When the child process is something where the parent is not entirely obvious...
Is there some way to list processes in tree format or something?