where I can to find mapping between man section number and it's description in standalone mashine.In other words, where I can to find description of some man section when I have not connection to Internet? For example:
1 -> User commands
2, 3 -> Linux programmer's manual
and so on..
I have a microphone that I connected via USB. When I do dmesg it shows [37830.040274] usb 5-1: new full speed USB device using uhci_hcd and address 4 How do I find out what /dev/??? identifier has been associated with the device? I want to record something using XVidCap and need to set the microphone for it to work.
View 5 Replies View RelatedI'm wondering where I can find description of mpstat output?.. I'm talking about the output of all available counters presented by mpstat. For instance:
Code:
$ mpstat -Au
Linux 2.6.31-19-generic (lenovo-S102) 02/19/10 _i686_(2 CPU)
17:32:15 CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
17:32:15 all 36.00 0.18 10.39 0.73 0.08 0.03 0.00 0.00 52.60
17:32:15 0 36.81 0.15 11.58 1.14 0.16 0.04 0.00 0.00 50.11
17:32:15 1 35.26 0.22 9.31 0.34 0.00 0.02 0.00 0.00 54.86
[Code]...
How can I know what number descriptor is used by my usb device indicate via libusb_device_handle structure ? I can't find declaration of libusb_device_handle structure. I need this information to use poll() function where I need decripttion number of device.
View 1 Replies View RelatedHow can I know what number descriptor is used by my usb device indicate via libusb_device_handle structure ? I can't find declaration of libusb_device_handle structure. I need this information to use poll() function where I need decripttion number of device.
View 4 Replies View RelatedIs there some file in Linux that enumerates and describes mount options for file systems like /etc/services describes ports?
View 2 Replies View RelatedFound the below from RedHat Knowledgebase
The Completely Fair Queuing (cfq) scheduler in Red Hat Enterprise Linux 5appears to have worse I/O read performance than in version 4. It appears as though the Completely Fair Queuing I/O scheduler (cfq) has a regression and thus exhibits reduced read-side throughput which can affect performance for both local and NFS mounted file systems.
One way to mitigate this is to set the cfq's slice_idle parameter to zero. To change this value, execute the following command echo 0 > slice_idle in the /sys/block directory appropriate for your situation, as shown below:
echo 0 > /sys/block/hda/queue/iosched/slice_idle
We are using NFS file systems in RHEL 5.3. I would like to know how to find which /dev/Device is being used by the NFS file systems, so that I could try setting the slice_idle to '0' to see if there is any difference in performance? In /etc/fstab I only see the actual NAS volumes for the NFS file systems.
I'm very happy with 10.04 but want to take a look at 10.10. I can't seem to find a list & description of all the new features.
View 6 Replies View RelatedI have searched all over. I cannot find any info on the description of the Fedora mirror release directory structure and the reason for having a "Fedora" and "Everything" directory? Yes I looked at [URL] I mostly work with the Red Hat 5.x. The Fedora release software is kept on a mirror and the DVD release as, (using i386 release):
[Code]....
I am playing with grub and i change the root using:
How can i know what's x for /dev/sda7 ?
The problem is that in Gparted view, the order is not like sda5, sda6, sda7, ...but the order is like:
So what's x for /dev/sda7 ?
Can we find the inode of a particular file using its inode number?
The reason is i want to know how many blocks are occupied by specific file.
if we consider block size of 1K.
if the file size is of 100 bytes. In such a case, when the file is
stored on disk, the file will occupy 100 bytes or 1K (since we have
choosen block size to be 1K) ?
i need to know how to find number of files in a directory? is there any system calls in fedora 12.And i need to know how to perform a operation if the that count increases by one?
View 14 Replies View RelatedI have a file called abc.txt which has following contents.
10.180.8.231=31608
10.180.8.232=29011
10.180.8.233=31606
[code]....
I can track that my CentOS 5 ships with SVGA driver through:
cat /var/log/Xorg.0.log | grep SVGA
But how can I find the SVGA Version number?
how to find the driver module name using MAJOR NUMBER. In general major number list is available in Documentation/devices.txt but if i want to find out the driver module name specific for a given MAJOR NUMBER, what can be done?
View 2 Replies View RelatedDuring the installation of RHEL it asks that you may enter the installation number to get packages , updates .....etc, now my server is up and running and i need to get the number that I added during installation
View 2 Replies View RelatedI need to find TCSH shell and gzip version number by running a acript on several boxes through ssh. How can i do that? I made a script for tcsh but it is not working by ssh , it only works on my box . I dont know from where to find the gzip version info.
View 5 Replies View RelatedWhat offline method is there of finding out days since a certain date. Example: How would someone find the number of days from 1-Jan-2003 to 7-Dec-2010? Could someone write a script that takes in the 2 dates and output the number of days?
View 5 Replies View RelatedYou maybe know that VirtualBox has an "immutable" feature for HDD images. I.e. setup the system, if the stuff is in place, you can set the image to IMMUTABLE to prevent any changes to the image. Differences are written to a separated image. So on the next boot you'll see that all the (unintended) changes are gone and the "old" system is up & running again. I run an old SuSE 10.3 on a write-protected SD-IDE-Adapter. Changing and playing with RPMs is a mess due to around 50 changes I had to do to make that work. Is there any option to mount an SD-card as RO and having all the changes written to e.g. /dev/sda3? To make it clear: I thought about something like a RAID-X system, but could not find any description on how to setup a raidtab.
View 3 Replies View RelatedI read this thread but
Code:
anisha@linux-uitj:~> su
Password:
[code]...
I am unable to find a description of alsa's programing language, this sort of stuff:
[Code]...
I need to know what, for example, 'ttable' means and what is its syntax. This seems to be a state secret.
How can I see a description of a program or read its man pages before doing apt-get install program?
View 2 Replies View RelatedI did an adduser to create a new account, but i forgot to add a description to the account, so it just looks like this when i look at the passwd file. how can i go back and add one? all my other accounts have descriptions after the two numbers.
testuser:x:512:512::/home/testuser:/bin/bash
Displays ONLY the description text for the RPM package
how can you do it , ive read online that
"# rpm -qi " gets you all the information how can i just get description ?
I would like to download a Flash game and play it without using Firefox under Ubuntu Lucid - any ideas how? I can download the game fine, I'm just wondering how to play it without Firefox. Is there a standalone Flash Player I can use?
View 2 Replies View RelatedDoing some research I was leaning towards buying an inexpensive laptop and either install linux or buy one already installed (maybe Debian or Ubunutu). The uses for this laptop would be for developing linux device drivers and having the option to control the OS for any customized applications which I could develop. Didn't want to go the dual boot with Windows approach.
View 1 Replies View Relatedi have a standalone system in my home. i don't have cd/dvd drive and no any facility to install it form network. i want to install redhat 5.3 using pen drive on my pc.
View 3 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 RelatedI enabled D-Link (DSL-502T) router web management (I am aware of security implication). I was able remotely to login to the router (by typing http://23.45.xx.6y) before changing the default number 80. Then I changed the port number from the default value 80 to 21908 (https option is not available) for better security, and when I tried to login to the router by typing this :
http://23.45.xx.6y:21908
Yes I am aware that if I am physically near to the router then I can check that , but this is not the case with me. How can I make sure that I had changed port number form 80 to 21908? Does NMAP do a trick to reveal which port is used for web management ? or are there other better options?
I'm in the process of writing a program that is a server- it will accept connections and stuff, and spawn a child process for each. However, i've run into a small problem. I do NOT want to bother with keeping track of the processes unless i need to. So, i set SA_NOCLDWAIT (#ifdef) on a SIG_IGN to the SIGCHLD handler through sigaction interface. The standard says that it the kernel will then keep track of reaping zombie processes for me (a HUGE plus). However, upon receiving a SIGINT signal, i want to stop the server from accepting new connections (done), and then wait for there to be no new connections. I was thinking of just putting a loop like so:
Code:
while((wait(NULL) != (pid_t)-1) && errno != ECHILD);
However, I'm not *sure* that this will work, especially with SIGCHLD still ignored. So how can i tell if there are still child processes? I can't find any call like int getnumchld(pid_t proc); (i wish). Plus it would be inefficient to spin on that function anyway. OTOH, i would rather *NOT* have to do the same thing in a loop with a system("ps |...>file"); read(file); etc. either. Is there a way i can portably implement this feature (I was hoping i could run it on linux and the major BSDs, at least).
TO SUM IT UP:
How can i tell if a process has no child processes if i've SIG_IGN'd SA_NOCLDWAIT'd the SIGCHLD? Is there a _reasonably_ portable way to do so? I *don't* want to manually wait for EVERY process. Maybe only those still active at the time of SIGTERM, but that requires keeping track of the number of connections and whether those have terminated...
EDIT: Does anyone know if the above code *would* work, even with SIGCHLD ignored and the kernel cleaning up zombies *for* me? I checked the manpage and it doesn't say much.
EDIT1: Note that all of the processes are in the same process group and session. SO i can find them through this as well. Perhaps even setting the uid/gid and finding all processes run by that group?
EDIT2: i have an idea if the above isn't feasible. If there is no "elegant" way to do it, i could reduce the complexity by sending a SIGUSR1 to the whole process group. Each process would then set a flag telling it to send a SIGUSR1 in reply and send a SIGUSR2 when it is done executing. Then i could keep a count of signals. Maybe that would be *easier*. Or perhaps a count of all child processes and just a termination signal to decrement the counter.
