there's 2 scripts that i want to run when my server start.I a bit new to linux, i found that i could use the script rc.local to run things at startup, although, what i want to run is 2 infinite loop, so the first loop run but not the second.
View 14 RepliesI'm doing a dual boot Ubuntu 11.04 and Windows 7 on my Asus UL80v. When I restart and keep going into Ubuntu I'm fine, but I think if I go to Windows and then restart, the infinite start up happens, and I'm currently stuck in this. It'll go to the OEM screen, then a black screen with a cursor, then it goes black, and then back to the OEM screen and so on and so forth.
Luckily I have Ubuntu 10 on my flash drive, so I'm booting to that while I try to figure out this. Which reminds me, when I use the flash drive, there's an option to boot to local disk which also does not work, if that's worth anything. Before this happened, I ran check disk on windows because I ran into some partition troubles. There seemed to be no problems, and I can still access the drives from this flash Ubuntu.
When running a program that has infinite loops in the terminal , how to bring back the command prompt ? ( I'm using Fedora core 5 )
View 7 Replies View Relatedi was playing around with c++ recently and for laughs and giggles i came up with this little program
Code:
#include <iostream>
using namespace std;
int main ()
{
[Code]....
theoretically that should be an infinite loop but it in fact does terminate eventually echoing out 'FIRE!'
just wondering if even though in theory this should be an infinite loop (a number repetedly divided by 2 should never reach 0 thus the conditions of the loop should never be satisfied, hence infinite loop) perhaps in practice limitations of the variable types prevent this?
I have a java server console program that I have configured xinetd to start when connection comes in on a given port and then the program runs in an infinite loop receiving inputstream from telephone exchanges. The thing is, when a new chunk of stream comes from the exchange xinetd forks a new process each time. I tried setting the wait parameter to yes and restarted the deamon, but no success. How can I stop this behavior and have the deamon just direct the stream to the process already running? Am I missing something in my config or is it just incorrect?
My config is as follow:
defaults
{
instances = 60
log_type = SYSLOG authpriv
log_on_success = HOST PID
log_on_failure = HOST
cps = 50 10
}
includedir /etc/xinetd.d
And then my actual config,
service aos_larmar
{
socket_type = stream
protocol = tcp
user = root
type = UNLISTED
wait = yes
instances = 256
server = /home/gunnl/java/start.sh
port = 5204
disable = no
}
My server OS is, Red Hat Enterprise Linux ES release 4 (Nahant Update 7)
It happens really randomly. Suddenly keyboard and mouse stop to react. Screen freezes. However if I have for instance skype running during that "crash", I can still continue to talk over internet. For me looks like x serwer crash. Xorg logs however are empty. I had to hard reboot only to get control over pc (magic sys key + SUB) only works. Trying switch to another session is not working. I run Slackware 13.1. Kindly asking to help me to solve that irritating issue. I pasted errors usually I find at Xorg.0.log.old after hard reboot only
Code:
2.6.35.4 #2 SMP Tue Sep 14 19:33:55 CEST 2010 i686 Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz GenuineIntel GNU/Linux
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 8800 GT/PCI/SSE2
OpenGL version string: 3.2.0 NVIDIA 195.36.15
OpenGL shading language version string: 1.50 NVIDIA via Cg compiler
[Code]...
I have recently been running into the "EQ overflowing" message. It has been happening when I open an image with gimp or a xls with open office. I noticed some were having this issue with earlier kernels. I am using the nouveau driver to run two nvidia cards with three monitors. I am currently running the 2.6.34.6-54.fc13.x86_64 kernel. Here is the output of my Xorg.0.log file:
[Code]...
I think i came across a bug in X server in squeeze. I would report it to the bug tracking system in debian packages but the think is I am not entierly sure about it.When i start X (whether it is through startx or service gdm start or auto startup through init when the pc boots) the computer PC seems to lock up.The screen goes black right after X initializes and before anything is show in the screen and if i wait a about 10 minutes the monitor either goes in standby or out of range. PC seems unresponsive to both keyboard commands and mouse but my LCD screen in my G15shows the time skips 1 sec every 2 sec (from 19:22:22 goes straight to 19:22:24).
I have a custom 2.6.33 kernel which i build but it happens with both 2.6.32-trunk and 2.6.32-3 offical kernels from the squeeze repository so i dont think that this is the problem.My PC is a P4 3.75Ghz with 2Gb RAM and an NVidia 6800GT with the binary drivers from nvidia. I have tried diffrent versions from my grapgics drivers (NVIDIA-Linux-x86-173.14.25-pkg1.run & NVIDIA-Linux-x86-195.36.15-pkg1.run) with no change in the behaviouThis is the syslog from the time my pc started and then "stuck". I left it for some time before i hard reset it
I want to figure out what is going on in this small script.Its really strange.I think its the infinite loop again.All I want to do is to collect some data from the zenity dialog box in an array and then echo it.Here is the code
Code:
#!/bin/bash
#export PS4='+${BASH_SOURCE}:${LINENO}:${FUNCNAME[0]}: ' debugging info
[code]...
I am trying to develop a process monitor, or use existing monitors to achieve the below given actions.
1) Restart a processes if it crashes.
2) Restart a processes if it is stuck in an infinite loop.
The sample code below describes the structure of the process.
while(1)
{
statement 1....
statement 2....
while (1)
{
[Code].....
The goal is to restart the process if it is stuck in a loop, inside the outer while loop. Given this scenario, what would be the most efficient way to monitor such a process?
A sample solution would look something like this: statement 3 will write to file1 every time it is executed and we know that the maximum execution time of the outer while loop is 30 seconds. A second, timer driven process, checks for file1 being modified every 30 seconds. If the file is not modified, process 1 will be restarted assuming, process1 is stuck in a while loop.
I'm using debian etch and I've installed some automatic updates, after that some programs weren't running. So I restarted the pc. Now that the computer boot up normally but when it reaches the login screen it just emit a sound in the pc's speaker,he login screen flickers and is showed another login screen again and again and again (it's automatic). I can logon using the option single-user mode in the grub options, any idead on how can I fix it?
View 5 Replies View RelatedWhen I boot one of my machines, it gets as far as GRUB, then proceeds to a blank screen for a second, and then repeats the cycle all over again - ad infinitum. I have tried previous kernels on the list with the same results Also, I cant boot into recovery mode either.
I have run Memtest successfully from the GRUB options and no errors appear in the results. I have tried booting from a Live CD and here I get as far as the "OS choosing screen". When I then select one and hit Enter, the screen goes blank and the machine reboots as before.
I upgraded to 10.10, system rebooted but it is stuck at a constant loop.
I can go into safe graphics mode and things look fine except compiz isn't running. I have tried going into login and changing it to log me in automatically but the problem remains.
I've tried using my previous kernal and I have the same issue as this newer one.
I've tried loading gdm from CLI and the problem is still there.
I installed Xubuntu and was thrilled to see that it had already setup my Brother HL-2140 USB laser printer.However, there is something seriously wrong with the setup. When you try and print, even a test page - it just churns through the entire paper tray printing nothing. Also, when you restart the computer it tries to print the jobs again. I went to Printing and selected the printer but could not find where you could see the print job queue. I did see it during troubleshooting and was able to delete the jobs on the troubleshooting screen.
View 3 Replies View RelatedFedora 15, fresh install.I changed the wallpaper from default to a solid colour. After switching between gradient to colour the system crashed logged me out and upon logging in it simply runs endlessly accessing my harddisk but never actually loading the desktop.I can kill X and reboot, but it's the same problem waiting for me on restart. I really don't want to re-install or delete users (to put it in context, I just spent 3 days trying to install Fedora because Anaconda doesn't know how to install GRUB correctly).
View 5 Replies View RelatedI have just upgraded from 10.4 to 10.10 (x64), and now when I run gnu screen the new shell session goes into an infinite loop displaying:
Quote: Linux dave-desktop 2.6.35-22-generic #35-Ubuntu SMP Sat Oct 16 20:45:36 UTC 2010 x86_64 GNU/Linux
Ubuntu 10.10
Welcome to Ubuntu! * Documentation: [URL]...
0 packages can be updated.
0 updates are security updates.
repeatedly until I hit CTRL-C and break out of screen. I tried tmux and that did the same thing, so it is a problem with the shell initialisation rather than with the screen program. However I can start bash, zsh or sh directly in a terminal with no problem.
One of my servers needs to issue an "apt-get update" command on each of the clients in a lab. However, after the first update, it exits. In trying to replicate the problem with a simpler script, I created the following which fetches the listings of multiple directories from a client:
NUM=0
cat paths | while read DIR; do
ssh server-name ls $DIR > /tmp/$NUM.txt
NUM=`expr $NUM + 1`
done
Again, after the first iteration, the script exists. I tried the following line too, but it made no difference:
bash -c ssh server-name ls $DIR > /tmp/$NUM.txt
The only thing that worked so far is this
xterm -e ssh server-name ls $DIR > /tmp/$NUM.txt
I am setting up a CentOS server that has no screen connected, and only has 2 Tesla cards. I have created a minimal xorg.conf and xinitrc file that doesn't load mouse or keyboard, and only creates two screens, one for each card at 320x200x24 bit. This is so I don't waste VRAM on a framebuffer I can't see.
I modified the xinitrc to just load tdm and nothing else as GNOME is a RAM hog. I am then using this setup to render stuff offscreen using OpenGL into FBOs which I read back to CPU and process. Currently for development I just run startx& when I login. I now want to know how to set x server to start automatically at boot. The CentOS docs say that it will try to load the GNOME login manager. The thing is that I don't want a login manager as it is useless as I login remotely via SSH.So:
1 - how to enable automatic x server in CentOS (im used to Ubuntu so not sure how to do this on Red Hat variants)
2 - leave x server running without starting login manager
In the code segment below is a for loop I am having some considerable difficulty with. It just keeps iterating endlessly and totally ignores the 70 times limit specified. I can't ever remember having this problem before and am absolutely Clueless.
Code:
for ( x = 0; x < 70; x++ )
{
fputs ("CSN00", target);
fprintf (target, "%d", userid);
[Code].....
I have a mytext file with month and year as two separate fields. likemytext fil
08 2010
09 2010
10 2010
........
........
........
I want to read the values of each field i.e., month and year into an awk script.
I've installed ssh, as well as a script of my own, in /etc/init.d, and I've added both of them to the startup sequence (I've tried both the "rcconf" graphical utility, and "update-rc.d"). The installation utilities seem to be working just fine and report success, and everything seems to be where it should be, but on reboot, my startup scripts don't start up.
I have these scripts running on MANY machines withOUT the GDM/Gnome Desktop running. On this ONE machine, though, I have Gnome running.
Is there some fundamental difference between the GUI Desktop's startup sequence and the text-mode-only startup sequence?
I have just installed a fresh Ubuntu 10.04 x64 installation. I have a script that I am added manually that is not starting on startup like it should, but I also have 2 normal startup scripts that are not running either. Apache2 and mt-daapd are 2 applications that I installed with sudo apt-get install apache2 mt-daapd. Neither application is starting during bootup. I tried making sure there were in the rc.d by using update-rc.d but both said that they already existed. Another script (mount_data) I made myself also has been added and is executable like it should be that isn't running at bootup.
View 9 Replies View RelatedI noticed my computer seemed to be running excessively noisily, and upon checking into System Monitor, I noticed that my CPU was being held constantly at 100%. None of the processes listed on the process tab seemed t be responsible, but I found this thread which gave me the 'top' command.
Running it, I found a process running as root called 'bmcapture' that was responsible for the CPU use. Trying to 'kill' it failed; using 'sudo kill' gave me no error messages, but the process continued to run. This carried on through a restart.
I then proceeded to shut the computer down and leave it off for a minute. When I booted up again, the CPU was still running at full, and using 'top' I determined the same process was responsible; however, 'sudo kill' successfully killed it this time, with apparently no adverse effects.
My question is if anyone has any information about what 'bmcapture' is, whether its harmful (aside from the obvious issue of it using full CPU) or malicious, and if there's any way to stop it running on startup, because as it is I'm having to manually 'sudo kill' it every time I turn my computer on to stop it eating my CPU alive.
I'm trying to get synergy+ to work on Fedora 12 on start up. I'd like to be able to log into Fedora using my keyboard and mouse through synergy+. I've tried adding the line
Code:synergyc <localipaddress> at the end of the /etc/rc.local file but I still can't use my keyboard and mouse to log in. I've also tried adding the lineCode:su <username> -c "synergyc <localipaddress>" to /etc/rc.local but it still doesn't work. Just to clarify, I do have synergy+ working on Fedora but I need to start it after logging in on each reboot by switching my keyboard over to the other computer.
I have a program I have made, and I would like it to run as soon as the system is finished booting. I am using Ubuntu Mini Remix to recreate a LiveCD/USB stick. After booting, it drops me to a command line where I can enter "sudo qct" and it will run my program (which is called qct, and it has to be run as root).I want this to be automated.Instead of going to a command line, I want it to run the program itself at that point. How would I go about doing this? I have read many tutorials about scripting but I cannot seem to get it to work.
View 11 Replies View RelatedI have not been able to find any information on this, mostly because I am sure I am searching for the wrong terms. Let me explain what it is I need to do.I have a timeclock process that needs to be running all the time on my Red Hat server. Right now, I manually start the process from terminal:Code:# ./timeclockThis runs the process inside the terminal. The only problem is that if I close the terminal by accident, the timeclock stops working. This is all well and good for now, until I get more timeclocks.Then I will need to have one terminal open per. What I would like to do is to make this process run at start up, and run behind the scenes (no terminal). At the same time, I need to be able to re-run the process (again, hopefully behind the scenes) in case the timeclock goes offline or the process crashes.I know very basic things about Linux administration, and I know it is possible to do this (as there are processes now setup by someone else that do this), I just do not know how. EDIT: An idea I had would be to make the script run every minute, checking to see if the process is already running, and if it is not, then to start it. That way it would automatically correct itself if it went offline.
View 3 Replies View RelatedAs you can see on the output of the script, the two 'testing echoes' I do at the end don't print anything.That's the point, I do NEED this array further in my script.I'd understand my "param" var is local to the for, but is the other one too ? I tried to use "declare -a file" before the for, but i get same exact result !
View 2 Replies View RelatedI'm having some problems getting my screensaver to work automatically.If I start the screensaver config program then it gives me this message: "The XScreenSaver daemon doesn't seem to be running on display ":0.0". Launch it now?" If I click yes then my screensaver works exactly as expected.How can I get the XScreenSaver daemon to start automatically?
View 3 Replies View RelatedI have installed OpenSUSE 11.4 using the Gnome Live USB version, and I have updated to Gnome 3.I use a USB CDMA modem which is not detected automatically (it never did).after reading a lot of forums regarding similar issues I have been able to solve my problem, I have to run this script after login, modprobe usbserial vendor=0X05c6 product=0x00a0as RootI was wondering is there anyway that this script runs automatically at start up.
View 4 Replies View RelatedIs there a way I can run 'completely' one of my script when ubuntu's desktop appears no matter if root , administrator, desktop user or an unprivileged user logged in?
What does the script do? The script mounts a partition, looks for a file in that partition and finally on the basis of that file a decision of copying a partition to another partition is made. That copying is done via
[Code]...