I want to start by stating that I don't have any issues that I'm trying to resolve other than a hypothesis. And I could RTFC, but there's a lot of filesystem code that I'd have to familiarize myself with ;) I'm curious what would happen if I were to open a file and then unlink it in the filesystem (but still have the open handle). Then the system crashes.
Specifically: I'm curious as to whether the files inode will still indicate that it has references, but nothing in the filesystem points to it anymore, or whether it's up to the OS to know that it can't write to the space, but as far as the inode is concerned it's free.
I have a pthread waiting forever on a POSIX message queue and then call mq_close and mq_unlink on the POSIX message queue. I've found that the pthread never wakes up from it's call to mq_receive and remains blocked indefinitely. Is there a way to wakeup all pthreads blocked on a POSIX message queue after calling mq_close/mq_unlink? The goal is to include error handling during message queue deletion to avoid leaving any pthreads blocked forever.
I work for a company that makes portable devices running Linux and I was recently asked to make the underlying file system read-only for "security" purposes. Since the distribution is based on LinuxFromScratch, I know that very little writing happens at run time. So, even if the device runs on a usb flash device, I doubt that putting the root file system RO will be that beneficial. I am actually more concerned about a process actually breaking because it cannot open a file in RW mode than a process going rogue and filling the root file system with log files, etc. I'd really like to ear what kind of advantages disadvantages there really is with read-only file-systems.
I'm currently stuck at 6.13 GMP-5.0.0 of the LFS installation. After running make, I receive the following:
error while loading shared libraries: libbfd-2.20.so: cannot open shared object file: No such file or directory make[2]: *** [libmpn.la] Error 127 make[2]: Leaving directory `/sources/gmp-5.0.0/mpn'
I am using xubuntu and there are a few types of files on website that instead of downloading and saving and then opening with emacs, I would rather when the radio button choice comes up say open with emacs. I am using xubuntu with xfce, and there is no line for a command to be entered as some ubuntu editions have. In the choice of changing the opening program from mousepad to something else, it says search and allows to navigate to find a program, but I cant find emacs anywhere not in etc/ or elsewhere. So where is its executable to direct the program chooser to?
I'm trying to install PCSX2 (PS2 emulator) and I get the following error: ./pcsx2: error while loading shared libraries: libgtk-x11-2.0.so.0: cannot open shared object file: No such file or directory
I've followed the instructions here http://pcsx2.net/downloads.php and believe I have all the dependencies installed. My system has the following file:
error message when I ran my program that I couldn't open my local file. I have two files first one is called client, second one is called server I am using named pipes to sent a message from client to the other file called server in client I used mknod() to create the two named pipes,one for read,one for write and created new thread in client using fork() spawned a child process that executed the server file both named pipes are opened the client file got the message from the user and sent it through the named pipes to the server file when the server receives the message , it needs to verfify it is correct in the server file, a local file descriptor is created to read and send this verifing message when it is not correct but I am getting an OPEN() error when I tried to open this shared local array buff and attach it to a file descriptor where the message is kept why do I get this error in server file
int main() { /*both named pipes are open*/ rfd=open(IFIO1,0); wfd=open(IFIO2,1);
I am using RHEL 5.I have a very large test file which cannot be opened in vi.The content of the file has some 8000 lines.I need to view ten lines between 5680 to 5690.How can i view these particular lines in a large file.what is command and option i need to use.
I have a remote Debian 5 machine on which I'm trying to extract a tar-file (Django 1.2.1, but that's unimportant). The first 1300 or so files extracts just fine (of about 2800 in total), after which errors liketar: Django-1.2.1/tests/urls.py: Cannot open: No such file or directoryshows up for the rest of the files, finally ending up with atar: Error exit delayed from previous errorsI use the commandtar xzvf Django-1.2.1.tar.gzI've also tried with sudo (but I'm extracting in my home directory, which I should obviusly have permissions to use without). I've tried gunzipping first (runs flawlessly) and then running tar xvf, but to no avail. I've fetched the file using wget:
I need to goto a folder, open a script file (same file every time). The file has different function calls, I need to comment all other function calls and just un-comment the one I want to use.
I have recently fresh installed ubuntu 10.10 on my Acer Aspire 5940G laptop. and everything seems to be going great apart from i keep on getting random system lockups when i am transfering files from my ipod or usb disk or copying large files on my hard disk.
I've got a system that has given me problems since day one. It's my oldest kids computer and she seems to open about twenty tabs in Firefox. The computer will freeze and she'll manually hold down the switch to reset. I've instructed her to please stop shutting it down manually but kids never listen.So anyway the thing reboots into initramfs. Seems unable to do anything with the hard disk. Now heres where I run into problems. In the past I've removed the drive and put it into one of my other Ubuntu boxes then ran fsck. fsck always recovers the journel quickly and I pop it back in and all is well.First question or situation if you will. I have tried left and right to get fsck to work from the livecd. If I let the livecd boot up and open a terminal fsck /dev/sda1 comes back with device or resource busy. Apparently the livecd get stuck automounting and causes problems.
I'm really tired of putting this thing in another box. I tried downloading knoppix but it wouldn't burn off for some reason. I've tried booting into rescue mode, but that seems to be missing from the livecd these days?Can I boot into single user mode somehow? Kill off some process that is causing the resource to be busy? I'm thinking once I maybe flagged the drive as dirty and had it clean itself on reboot.. will the livecd pick up on that?ok.. so thats the first situation.. second is upon recently fsck doesn't fix the problem. The drive recovers just fine, but after using the computer for a short while the drive will somehow magically mount as read only.. and then programs will freeze and shutting down is hard to do.
A process from some software I am running keeps crashing with seemingly no real pattern. I ahve tried using ddd/gdb to run the process in question but everytime it crashes no useful information is returned. I also tried getting a core file with the same result. It seems as though according to linux the program has exited normally.
This obviously points towards the process itself having a bug but there are other instances of the same program running on other machines in the network with no problems at all.
I have made comaprisons of hardware/drivers (lspci etc) installed on various machines and all are exactly the same as the machine in question so my question is (at long last): What else should I be looking for?
I upgraded to 11.04, but the updgrade crashed, and now it has some errors with Unity crashing every time I open a terminal. Is there any way to re-install without having to reconfigure all my programs? I am running a dual-boot.
I was installing some stuff and now after the install. The look of my kde is now totally changed and konquerer won't load and vlc also changed but its working. File manager (dolphin) keeps crashing if I try to open the video folder. how to revert back to the old KDE or at least make things right.
Have been having some problems with Libreoffice Writer crashing every time I try to save a file that contains any kind of multimedia (usually images) so I decided to completely remove the app and any trace of it and start again.
After complete removal I reinstalled from the Opensuse repo 3.3.1
The porblem I have now is that when I start typing in writer absolutely nothing happens. Wait approximately one minute and the text I typed appears. Try to backspac to delete or type some more and the behaviour persists.
My midterm instructions are in mth format. I wouldn't even know what program to use to open in Windows. The actual midterm itself is an htm file. I need help ASAP.
I have a file in some obscure directory that I want to open and edit. I don't want to do something like this...
vim ~/foo/bar/blah/doh/ugh.txt
I'd rather be able to say find this file and open it. I know there are commands like locate and find to find a file or directory, but I'm not sure whether these can (or even should) be utilized in what I'm trying to do. Basically, what is the simplest way to open a file with a program w/o specifying its exact location? (In cases where there isn't another file with the same name in the entire system, and cases where there are multiple).
Say I have a file that's downloading (from a source that's hard to re-download from), but accidentally deleted from the filesystem namespace (/tmp/blah), and I'd like to recover this file. Normally I could just cp /proc/$PID/fd/$FD /tmp/blah, but in this case that would only get me a partial snapshot, since the file is still downloading. Furthermore, once the download completes, the downloading process (e.g. Chrome) will close the FD. Any way to recover by inode/create a hard link? Any other solutions? If it makes any difference, I'm mainly concerned with ext4.
I'd like to determine what process has ownership of a lock-file. The lock-files are simply a file with a specific name that has been created.So, how can I determine what process has a particular file open in Linux? Preferably a one-liner type or a particular Linux tool solution would be optimal.
