Programming :: Make Detect Plugged Number Of NIC's On A PC?
Jun 24, 2010
I am working on debian based OS and my query is,how to make detect the Number of NIC's plugged on a PC.
I describe it: Exact requirement would, assume, If I plug 3 NIC's for a PC,one for Internal Network,one for External Network and Other remaining one for DMZ,so I need to make an application(Firewall Kind)in such a way that,once my PC is started,it should detect how many NIC's are plugged and Whats their role played(As Mentioned above)..?
I hope u guys got a basic idea on what and how it it can be implemented..
I request to send some clues,or some related URL's/Tutorials or which part of the Linux File System needs to be edited(/etc or/proc),etc.
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Aug 7, 2010
i tried searching on google but found it difficult to say exactly what I was looking for.Task - Capitalise x number of letters at the start of words.eg. Original line - one.two.three.fourRevised line - One.Two.three.four (here only requiring 2 changes)Test data:
Code:
wire.in.the.blood.s04e01.ws.pdtv.xvid-river.avi
wire.in.the.blood.s04e02.ws.pdtv.xvid-river.avi
[code]...
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May 15, 2011
I tried, of course:
Code:
awk '/^./ {print}' FILE.TXT
That does not work, I just get an empty output, even if FILE.TXT contains lines which fit the desired regexp I've searched but did not found my way. I'd like to do it with awk, as I want my program to rely only on awk, nothing else such as sed, grep, etc.
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Sep 2, 2010
Does anyone know a way (hopefully a standard/generic way, e.g. through sysfs the interface) to determine if a VGA monitor is plugged in on Linux?
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Oct 14, 2010
Would like to make an installation with a number of programs. I would like to take a snapshot ( backup ) of my installation and being able to restore that later.
How can I take a snapshot, is it possible to 'save' everything to an ISO and burn
to a CD ?
I am using version 10.10.
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Jun 24, 2011
in terminal: if var = 2 and we write the file name "name$i" it would be "name2" but my file name is "name02" (in fact I wanna have a 'for' loop on about 50 files named: a01, a02, ... , a50)
is there any way to make a 2(n) digit number with additional zero(s) like "%02d" in C ?
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Jun 7, 2011
I have a Razer headset plugged in. Everytime I restart the computer I have to unplug/plug the headset to make it work. It even shows up the system:
lsusb
Bus 002 Device 002: ID 1532:001b Razer USA, Ltd
It does not show up as a valid sound device in system -> preferences -> sound.how I can make the headset "active" without replugging it to the computer?
uname -a
Linux unix 2.6.35-28-generic-pae #50-Ubuntu SMP Fri Mar 18 20:43:15
UTC 2011 i686 GNU/Linux
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Apr 2, 2010
I installed Ubuntu 9.10 yesterday on my computer. I had Windows XP and Windows 7 (I deleted the Windows 7 partition and installed Ubuntu 9.10). However, after installing Ubuntu, I couldn't access the grub boot menu. So I googled, and I found out how to make the menu show up again. That was okay. But Windows XP didn't show up. So I googled a bit more, searched the forums, and I added the following entry to my 40_custom file code...
As far as I know, that should work. The uuid I entered there is the one that gparted told me was the uuid of the partition. However, this isn't working. I get a disk read error when I try to boot my Windows XP.
According to my gparted, my Windows XP drive is inside an extended partition? I wonder if that has any influence on why I'm getting the disk read error, or anything. It's either that, or my 40_custom entry is wrong. I've been trying to sort this out for a while now, and I'm afraid I'm not getting anywhere with it.
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Aug 6, 2010
I installed a sound card but when I go to System->Preferences->Sound and go to Hardware it's not showing anything at all. If I boot from the Live CD then it will show the card and it works. How can I make my Linux installation detect this card? I was thinking that I could somehow copy the necessary files from the Live CD to make this work, but maybe there's an easier way.
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Jun 9, 2011
I need to write a small application which needs to detect if the system time is changed by an another application/user and perform some action as soon as it is detected (maybe log the data that time has changed, along with info about which application/user changed it).
How can this be achieved?
I have good programming experiences in shell script, c and beginner level in python.
I don't need to know when it was changed, just need to know who/what changed it.
The system uses NTP to sync the time, but it is also possible for anyone/any application to change the time(for eg: using the simple "date" command as well).
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Aug 10, 2010
I've try ubuntu lucid in DELL Inspiron, but touchscreen utilities is not run.
How can repair it.
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Aug 15, 2010
Everyone who deals with Linux knows that partitions on hard drives are designated as "sdx#", i.e., sda1 sdb2, etc. I know through experimentation that the number portion of the designation is assigned not according to order on the disk, but chronologically in the order they are created.
Further, if you have several partitions on the disk-say, sda1 through sda3-and you delete sda2, the designation of sda1 will remain the same, but sda3 will become the new sda2. The creation of any further partitions on the drive will start with designation sda3 and increment from that point.
At times this creates a conundrum, especially concerning bootable partitions. Some time back I rendered a partition containing OpenSUSE unbootable because of this, even though Ubuntu owned the GRUB bootloader in the MBR. Ubuntu's GRUB could find and point to the partition using the command "sudo update-grub", but when OpenSUSE took over the boot-up process, its GRUB was pointed to the wrong partition and would freeze up.
My question is this:
Under Windows, one is able to make a Drive letter persistent. Windows will keep the drive letter for that partition and assign around it. Is there a way to change a drive designation number, or at least make it persistent, under Linux? It would be a handy method to forestall these types of booting problems, among other things.
Presently, when a person has installed Linux side-by-side with Windows and want to delete the Windows partition and expand the Linux partition into the free space, I will tell them to format the partition, then shrink it to next to nothing instead of deleting it. This preserves the partition ID scheme while giving them the space to expand their Linux partition into...especially helpful with a seasoned Linux installation that would be a PITA to reinstall and set back up.
Oh, and I already know about UUID. This article explains it, but if you look down through the comments, you will see reasons that it is problematic for desktop application and usage. I want to make it as simple as possible for new Linux users (and myself! ).
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Mar 31, 2010
Can I make Yast/Ldap accept usernames that start with a number. All our current users have the format 09-first.last or 10-first.last etc.
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May 12, 2010
I installed Debian on a old hard drive (quantum 5gb) and ran with it for a couple of days.. BUT all my data (including windows) is on my other hard drive.. so my question is What do I have to do to make grub detect windows and linux when I attach the 2-nd hard drive?
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Feb 1, 2010
I have some code that opens a directory and reads in the names of files which are e.g. 0001, 0002, 0003 up to 9999I need to get all these numbers and then generate a new number that is not one of these numbers already.here is my code to check the files in the directory
DIR *d;
struct dirent *dir;
int i = 0;
[code]....
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Jul 7, 2011
But what is the easiest way to figure out the Unicode number of a character when you already have the character?
For instance, I pasted this character here from a PDF:
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Apr 13, 2011
Anybody knows How can I get the number of cores of a machine?I know that I can use POPEN and get the stream of this:
Code:
grep -i 'processor' /proc/cpuinfo | wc -l
But, I think that a simple method to do this.
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Mar 4, 2011
i want to generate random number in c programming from -1 to 1
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Jan 26, 2010
How, using the command line can I detect my wireless card and make it work under SUSE Enterprise Desktop? The wireless card works in Win XP.
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Aug 6, 2010
1) I need to search a field value to check for exact 0. If the number is 0, it should throw error.
The line to be searched looks like as below. "Output Rows [1], Affected Rows [1], Applied Rows [1], Rejected Rows [0]"
Here I have to search whether the affected rows is 0. But the code below picks up other values also (lie 10, 20.. etc). How do we write to get an exact match for 0? Code: affected=`echo ${line} | cut -f6 -d" " `
affectedcount='echo ${affected} |grep 0 ` 2) Also, I need to check whether the rejected rows > 0
Code: rejected=`echo ${line} | cut -f12 -d" " `
rejectedcount='echo {rejected} |grep [1-9]`
3)Can we combine these two statements in a better way to get the desired results?
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Apr 30, 2011
I've created (as a homework) to create as many folders as told but I still need to check if the variable is a number or not :
Code: #!/bin/sh
echo "Veuillez saisir un nombre"; read nmbr
nmbrf=$nmbr
while [ $nmbrf -gt 0 ]
do mkdir -p "foo$nmbrf"
nmbrf=`expr $nmbrf - 1`
echo "$nmbrf"
how do I check that nmbr is a number or something else?
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Jan 10, 2011
I try to get the absolute value of a floating number but i could not until now. I am using bash script btw.lets say A is a floating number:A=-0.125
Code:
absA=$(echo '$A' | nawk '{print ($1>=0)? $1:0-$1}')
the above code gives absA=0, whereas
[code]....
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Jul 7, 2011
I'm having a hard time trying to get the number of digits in a uint64_t variable. The reason I'm using this is I want to make sure I get x amount of digits inside of a variable before I use it, but since the higher the digits, the better the program is.I currently use the following code, and it works, but my loop will never exit because the length is always 0:
Code:
/**
* numbdigits()
* number: The number to evaluate [in]
*
* Returns the number of digits found in a number.
[code]....
getrand() returns a uint64_t as well (and works). The only way the while() loop ends without my intervention is if I do curd += numdigits(val) instead...but, that gives a false value as well.
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Jan 27, 2011
I have a char*[] array:
Code:
char* myarray[] = {"Hello", "there!", "LQ"};
and I wish to use/ write a function to find the number of elements in myarray (in this case, its 3).
*equivalent of .NET's array.size() that returns number of elements in array
How do I achieve it?
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Apr 23, 2009
I have a text file that contains the following string of numbers and letters:
Code:
Mean track length: 3.45 +/- 1.23 mm
or
Code:
Mean track length: 22.45 +/- 12.23 mm
In the first example, I would like to grab only 3.45 and write it into a new file. Then I would like to grab only 1.23 and write it into another file.
I have 80,000 files to do and those numbers can be different every time.
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May 9, 2010
I want to be able to run a piece of AWK code on a record specified by number, not by a regex.
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Jun 16, 2010
User submits a ms word file, and the php can recognize the number of words? Is it only possible for ms win server?
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Sep 15, 2010
I want to gave much details as possible. working directory (~/a1/shell) in the shell directory i have Makefile. also in the shell directory i have subdirectory's (obj, src, include)
My current Makefile
Quote:
#What needs to be built to make all files and dependencies
clean:
# End of Makefile
I wanted it so: all .o files are created in the obj subdirectory, and my application, sshell, is created in the shell directory.
I am getting this error when i run the make run: No rule to make target 'shell.h', needed by 'shutil.o'. stop
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May 10, 2011
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.
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May 10, 2011
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.
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