Is there any difference in cpu usage for process in init.rc(runs automatic when boot is happened) and manually running process. Will these both have same priority by default...?
View 1 RepliesI have a project in which many processes run. p1,p2,p3.
->There are some .so files are included in some process when needed example ppp.so in process p1 (when ppp is needed and will go like a plugin) but it has a init () function how a process includes a init() function ?
->process p1 has main function i.e main()
->so evry process has main() right ?
what is the difference between init () and main () functoins. where is init () used and how many init() a process van have ?
Further to solved LQ thread Bash: how to populate a list of arbitrarily named files?, what is the functional difference between feeding a loop with process substitution and feeding it with a here string with embedded command substitution? ABSG pages: process substitution, here string and command substitution. This works
Code:
while IFS= read -r -d '' file
do
files+=("$file")
done < <(find $dir -type f -print0)
[code]....
I have a shell script to identify whether the process is running or not. If the process is not running, then I execute another script file to run my application. Below is my script and saved this script as monitorprocess.sh Code: #!/bin/bash
result=$(ps -ef | grep -v grep | grep "applicationname.sh" | awk '{print $2}')
echo $result
if [ "$result" == "" ];
[code]...
I tried googling but didn't get any answer for this.I have a process called "abc" and it is running with PID "123".I have a putty session opened with PID "999".I am giving kill -TERM 123 from putty session.My process "abc" before dying it should catch the PID of the terminal which provided TERM signal to it.Is there any way to find this out
View 2 Replies View RelatedI have a shell script to identify whether the process is running or not. If the process is not running, then I execute another script file to run my application. Below is my script and saved this script as monitorprocess.sh
Code:
#!/bin/bash
result=$(ps -ef | grep -v grep | grep "applicationname.sh" | awk '{print $2}')
[code]...
I want to kill parent process after "fork()" method. but if I kill parent process with "exit(0)" method, main() thread is terminated as well so child prosess doesn't work anymore. Is there any way to kill only parent process without affecting to child process?
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
[code]....
recently I've updated my kernel, i had to reconfigure some stuff, in particular, the b43 module is not loading at init process, my question is: what command should I use to load it from the init? or what file should I hagve to edit?
View 1 Replies View RelatedI have a script in /etc/rc.d/init.d named foo. I want to start/stop/restart my process as follows:$ foo start But I do not see the [OK] message once it starts. There is no shell prompt returned either. It seems that my own process is the problem. The executable that foo calls is built from this sample code:
int main()
{
do {
printf("Hello world
");
sleep(1);
} while (1);
}
Do I have to return some kind of signal handle for this to work?
I am using suse 10.3 and my machine is giving this error.
inittab file is ok
no partition is 100% used.
reinstall sysvinit package
Consider the following code:
Code:
int main()
{
int i=0;
pid_t pid;
for(i=0;i<2;i++)
[code]....
I get the following output:
Parent: chid_pid=4356 i=0 parent's pid=4355
This is child 4356 i=0
This is child 4357 i=1
[code]....
I can observe instead of two children(as I expect) processes there are three. This is because child process 4356 creates its own child. Why all the messages of the type "This is child X i=Y" are concentrated one under another? How exactly fork works? Is affected by the fact that I have a dual-core processor?
I've some file with .sh extensions that runs some softwares.Now,how do I stop running that filesI know we run the command ./start_tomcat.sh to start the apache.Is there any command to stop that file/process or is it just kill the process to stop the process
View 2 Replies View RelatedI 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 Ubuntu 10.10 installed. When I boot, this error message appeared "init: ureadahead main process 388 terminated with status 5" After that, another error message appear saying " *ERROR* render ring head not reset to zero"
View 2 Replies View RelatedCode: init: ureadahead main process (423) terminated with status 5 Ubuntu 10.10 lorentz tty1
lorentz login: The first line of the above shows up during boot before the display goes graphical. I can see it again (all of the above) when I Ctrl+Alt+F1 to access the first text console. Anyone know what is causing this, what problems can happen as a result, and what should be done about it? I moved from 9.10 on one machine to 10.10 on a new machine, so I don't know if it's a hardware problem or software. I am running 64-bit. I am not really seeing any problems happening besides the few scattered application and GUI glitches that are common with a new/migrated setup.
I keep getting this message as the first thing I see when I boot up. Afterwards, it displays the ubuntu logo and dots under it and then the screen blacks out, but the display lights act like its OK (wireless ETC). should I use a boot CD or something? The hard drive is fine and this happened after the computer blacked out during updates. i scanned the hard drive and its OK, according to the little scan thing you can do before booting up. I have a Compaq Presario V200. For specs, thats all I know.
View 1 Replies View RelatedI found below message in my boot.log. init: ureadahead-other main process (814) terminated with status 4
View 4 Replies View RelatedCan't seem to get past this error Doing a google search resulted with no good answers that pertained to this issue. Not sure what's halting the system from starting up, but it just sits and hangs at this forever. Only able to view the error when booting into single user mode - normal boot hangs after "enabling /etc/fstab swaps: [OK]"
View 3 Replies View RelatedI have upgraded my ubuntu to the latest version a few days ago. Prior to the update I played a little with my partitions (transferred about 15GB from my windows partition to ubuntu partition).Up until yesterday everything worked. For some reason ubuntu will not load up now. After selecting ubuntu on grub i get the following msg: init: mountall main fsck process (574) terminated with status 3 mount of filesystem failed one or more of the mounts
View 3 Replies View RelatedI had been having problems with every LiveCD after 8.04.1 I tried both xubuntu and ubuntu (same internals, same results)
I ended up installing xubuntu 10.4 using the text mode installer.
The system basically works, I can not get gdm running.
dbus fails as noted above. I found launchpad bug #446971 and tried some of the work arounds with no success.
The system is an old eMachines T1120
Code:
CPU: Intel Celeron Processor 1.20GHz (w/256KB)
Operating System: Genuine Microsoft Windows XP Home Edition
Chipset: Intel 810e chipset
[Code]....
I have inherited ownership of a Debian server process that logs its error message to stdout/stderr. Currently its initscript has lines like:
start-stop-daemon [options] --exec $DAEMON -- $DAEMON_ARGS < /dev/null 2>&1 | logger $LOG_OPTIONS 2> /dev/null &
I have tried to abstract as much of that away as possible. The options specify a pid file, to make a pid file. A subsequent line tries to establish whether the process is up, though I think several conditions are not checked for. This script seems pretty ropey to me. I am trying to start again with the lsb-base one in /etc/init.d/skeleton though that is going to require a lot of modification. get the code change to use the syslog API however that is out of the question at least for now.
1.) Create a named pipe
2.) Start up a logger daemon that reads from the named pipe
3.) start up the server process that writes to the named pipe
It would be ideal for this if start-stop-daemon offered options to specify where the IO of the daemon process should be redirected to. However I am not about to offer to adopt that package (with ~400 bugs) so I doubt that will happen. Trying to specify the redirection on the command line does not work. In the case of the logger daemon start-stop-daemon seems to hang on the system call. In the case of the server process the pipe gets closed when start-stop-daemon exits, so the logger daemon exits. None of that seems surprising.So what I am doing now is to write simple wrapper scripts for the server and logger processes. Both wrapper scripts have this structure:
1.) sanity check the arguments
2.) exec program [suitable redirection of IO]
Then the start-stop-daemon can call the wrapper scripts as daemons. From my experiments so far this seems to work. However I feel a bit uncomfortable with this. It introduces several new wrapper scripts.I cannot think of any obvious security holes but I suppose race conditions are inevitable.
i am bit confused about the two process that is zombie and orphan procees,both is different so what is the exact difference between the two process that makes it different and if there is no parent process then init adopts the children in both the case.
View 5 Replies View Relatedi am looking for a detailed description of the login process for both root and normal user , also locally and remotely.i read some sentences that the files .bashrc and bash_profile are needed for this process. But that was very concise.
View 9 Replies View RelatedAm using ubuntu for a year Now am getting some prob am unable to boot it is showing init rcefault(2111) main process terminated
View 1 Replies View RelatedI am using Ubuntu 10.04 LTS. Two days ago I updated using update manager. After that I can not boot Ubuntu. When I trying to boot system showing message " Ubuntu is running in low-graphics mode Your screen, graphics card and input device settings could not be detected correctly. You will need to configure these yourself" But I can not configure it.I can not boot to 'recovery mode' also
/var/log/boot.log
Code:
fsck from util-linux-ng 2.17.2
/dev/sda6: clean, 304282/1680960 files, 2964945/6723194 blocks
init: Failed to spawn ufw pre-start process: unable to execute: No such file or directory
[code]....
Now I am using Live CD.
I have an Acer 9410Z laptop that I believe is running the Maverick Meerkat version of Ubuntu Studio. I just did an upgrade using Synaptic. I get to GRUB, but When I try to boot 2.6.35-22 (or the recovery mode or a real time kernel I had installed )I get the error:
INIT: Failed to spawn ureadahead main process. No such file or directory I then get the Ubuntu Studio splash screen for 2 seconds but then instead of a normal boot I end up in the terminal.
I upgraded from Ubuntu 10.0.4 to 11.0.4 on a Dell Optiplex. Now, when I boot, I am given the option to boot into different kernels. I select "ubuntu, with Linux 2.6.38-8-generic", which results in a black screen that reads
Code:
init: plymouth main process (58) killed by SEGV signal and that's where it hangs. Pressing ENTER or hitting Esc does nothing. What steps can I take to recover my machine and all the files I used to have on it?
What are the differences if I build (./configure, make, make install) an app when log in as root vs a "regular" user other than I have to use sudo for make install? If an app is built from a non-root account, will it be available to every other user on the system?
View 4 Replies View RelatedI just updated from 9.04 to 9.10 (it's a long story, and I still can't go beyond 2.30).The update got rid of WICD, which is what I used and installed network-manager. Network-manager was not working at all, so I uninstalled it again and installed WICD. I could connect perfectly and had no problems.However, now the computer hangs during boot, saying that init can't start network-manager. I assume that something went wrong during the uninstalling process, since it wasn't updated.
This is the message: init: Failed to spawn network-manager main process: unable to execute: No such file or directory.
So how do I update it or manually change it so it stops requesting network-manager?
My machine is dual booted with Fedora 14 and RHEL 6. (I have only installed Red Hat because I am studying for RHCE). Just now I tried to install the Banshee player on my Red Hat OS. I ran various scripts inside the directory to see what really happens and after I ran the 'Makefile.in' file my terminal froze. It displayed '/bin/ not found'Then i restarted my computer and I got the following messages:
init: Failed to spawn readahead-collector main process: unable to execute: no such file or directory
init: Failed to spawn rcS main process: unable to execute: No such file or directory
init: Failed to spawn readahead main process: unable to execute: No such file or directory
[code].....
I tried run level 1 and run level 3 but I get the same error messages.
PS: My Fedora 14 installation is working fine.