Ubuntu :: Invalid Blocking Factor With Tar

Mar 3, 2010

I am trying to backup my system with a script I found here. It gives me an error message of invalid blocking factor for --exclude=lost+found I have no idea what this means. I tried to search this form for that message and received no hits.

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Programming :: C - For System Calls, Is Blocking Or Non-blocking Default?

Mar 23, 2010

For system calls, is blocking or non-blocking default in C? Simple question, just am not seeing the answer super quickly.

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Programming :: Blocking And Non Blocking TCP Send/recv?

Dec 25, 2010

I have a device that is working on modbus protocol andI have written a small program(with block TCP read method ) to read its registers via modbus protocol.my program is working very well but except those times that I unplug the Ethernet cable or turning off the modbus gateway during programs work.at this time my program stops on recv system call (if it reach this system call exacly when I unplug Ethernet cable or turning off the modbus gateway during programs work).I changed my source to work in nonblock TCP method, at this time with the same situation my program does not stop/block on recv system call but after pluging back the Ethernet cable or resuming the connectivity situation back it reads data incorrectly .this is my code:Quote:

#define DEBUG
#include <fcntl.h>
#include <string.h>


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Ubuntu Security :: Multi-factor Encryption Under 10.04?

Aug 3, 2010

I am currently running 8.10 with full-disk (excluding /boot) encryption. I am going to be installing 10.04 on a new laptop, and I was wondering whether it supports multi-factor authentication. Specifically, I would like to have a keyfile on USB/SD memory that is required, in addition to the password, to decrypt the disk. Anyone know of a guide out there? So far my searches have turned up nil.

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Ubuntu Installation :: Two-Factor Authentication On Dm-crypt/LUKS?

May 15, 2010

Since i'm on-the-road a lot encryption is crucial, with windows i've always used TrueCrypt and DiskCryptor, this is very easy to setup and allows me to create usb/cd devices that i can boot off and contain a keyfile, on boot it also requires a passphrase. Currently all i need to do is boot from harddisk and enter my passphrase. I would like to be able to boot from external device (in this case USB) that contains the bootloader and an integrated keyfile, also it should requist the passphrase. I found a guide on how to achieve two-factor authentication with dm-crypt on feisty but it's quite an old guide and is realy realy complicated for a newbie

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Programming :: Is Spacing As Used Non-factor When Declaring Pointers?

Jul 3, 2010

I've seen all three uses:

type * pointer
type *pointer
type* pointer

Are these 3 forms essentially the same, i.e., is the spacing as used here a non-factor when declaring pointers?

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Debian :: Two-factor Auth With PAM Aborts On Incorrect Password

Jan 13, 2016

I am trying to setup 2-factor authentication for SSH with PAM. Its working well, but if the password is incorrect, it does not ask for validation code, but rather asks for the password again. Any way not to warn about an incorrect password?

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Security :: Which Distributions Have True Multi Factor Authentication

Feb 15, 2010

The distribution I've been using does not have a proper two-factor login scheme. The daft buggers have configured the system so that whomever is sitting in front of a machine is gifted with the entire list of user names having access to the system. This, of course, only requires them to guess only one of the factors instead of both. So while said system is still a two-factor system it's one whose security has been crippled down to a single-factor system. Does anyone know which distributions have proper two-factor authentication schemes for logging in users?

No, I will not name the distribution I'm using so that a 'fix' can be provided. If the distributions creators have been willing to knowingly bugger the security of the system for the sake of user laziness at the login then heaven only knows what other holes exist. I have neither the time nor the inclination to discover or ask what they might be and how to 'fix' them as well. Better to simply move on to a distribution who won't knowlingly bugger the security.

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Slackware :: Gkrellm On --current - Can't Change Any Sensors 'factor'

Jan 28, 2010

Was wondering if anyone else had a work around for not being able to change the sensor's "factor"? I need to divide the fan speed by 2, but I'm not able to change anything in the configuration.

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Hardware :: Redhat 5.3 Compatible Small Form Factor Config?

Jan 20, 2010

I'm looking to buy hardware to run my company's software.It usually runs on rack systems, but I want something that I can take with me on the plane, so a Small Form Factor system is what I'm looking for. My colleagues just stay in the server room, so don't know what to advise to take on the road ...

Here are the minimum specs:

- compatible with redhat 5.3
- 4GB of ram, extensible to 8GB
- 64 bits Intel processor, 2 or 4 cores.


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Slackware :: Plasma Netbook In 13.1 - Goes Back To The Desktop Form Factor

Jul 4, 2010

After falling out with KDE4.2.4 and using fluxbox for a while, I was sufficiently impressed with my experiments with KDE4.4.3 in slackware 13.1 that I decided to go back to KDE. In particular I'm keen to use plasma netbook on my eee pc 1000H.

But I've hit an annoying snag. The problem is that if I set it to use plasma netbook (System settings>Desktop>Workspace>Form factor>Netbook) it works just fine for the rest of that session but next time I startx it goes back to the Desktop form factor.

The strange thing is that this didn't used to happen, it only started recently and to the best of my knowledge I haven't made any other significant changes or updates to the system. I tried removing the ~/.kde dir and letting kde setup from scratch but that didn't help.

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General :: Invalid ACPI: Invalid PBLK Length [5] During Debian Boot

Sep 20, 2010

I installed Debian 5.03 Lenny successfully on my machine. I got this error during boot: ACPI : invalid PBLK length [5]. After that the Operating System boots properly and starts normally. What does this error statement mean? Is it safe to work with this installation despite this error?

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General :: Parsing Err Or Invalid $END - Correct User Use Of Invalid Characters

Feb 10, 2011

Trying simply to insert into table. Have succeeded in doing this but now want to correct user use of invalid characters. If I'm understanding correctly, Real-escape-string seems to correct these, so I've been trying to figure out how to use it. A short, test code version gives me a syntax error at INSERT VALUES, which--because it still has the single quotes in the text--tells me the real-escape-string didn't work. The code below gives me a parseing error with invalid $END at </body>.

Insert Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' VALUES (UTC_TIMESTAMP,'What's happen' bra?')' at line 1 Parse error: syntax error, unexpected $end in /home/powere15/public_html/DB/exercises_insert_record.php on line 94
<html><head><title>Exercise Catalog Insert Record</title></head>
/* Change db and connect values if using online */

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Software :: Blocking Socket Vs Non-blocking Socket?

Mar 31, 2010

My question is quite simple:What are type of applications where socket in blocking mode can be used ?
And where non-blocking mode to be used ??

TCP is blocking by default.

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Ubuntu Installation :: Grub And 9.04 - Error "invalid Command" Or "invalid Execution Format"

Aug 16, 2011

Bottom Line: Dvd Drive died in my toshiba laptop and it was replaced (not before tech for some reason reformatted the Win7 partition... which was 100% un-needed, but thats beside the point now. I redid win7 (the tech installed vista) and am TRYING to "redo grub". Facts: The Slackware AND Ubuntu Partitions ARE STILL THERE and when i use SuperGrub Boot CD (which doesn't restore my grub by itself) to boot into slackware, i can see ALL THE CONTENT of both Linuxes still there including grub on ubuntu partition

(Tri-Boot: Ubuntu, Slackware, and WIn7) I had it working for two years or so, SO i know this "setup" works fine. I am A) Trying to do this as simply as possible. B) Trying to avoid the need to download a 800MB ISO (as seen for this issue on this forum) and trying not to have to reformat Ubuntu Partition (though I have the .Debs I have downloaded for it backed up ... all 1.7GB of them) I have /dev/sda1 as win7, /dev/sda2 as Slack and /dev/sda3 as Ubuntu (which contains Grub Legacy).. Every command I do seems to result in an error like "invalid command" or "invalid Execution format " (i think that second one is right) type errors. I compiled (awhile back) a few kernels for Slackware, but feel goofy that I cant figure what i this out (what i thought was going to be a "2 minute" fix)

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Ubuntu Servers :: SSH Behind NAT Blocking IP Using UFW?

Mar 18, 2011

I have a SSH server on Ubuntu 10.04 running behind a NAT. I have done the port-forwarding at the router. However say for example I want to restrict people connecting to the SSH server by country IP's. When I configure ufw with the following rule it still lets the IPs that are restricted through. Any idea why

sudo ufw allow from xxx.xxx.xxx.xxx/24 to any port 2556

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Ubuntu :: ISP - Cox - Is Blocking Port 80

Jun 7, 2011

My ISP (Cox) is blocking port 80 and I would like to know if there is a way to open it again. I am to taking about 8080, 8000 or 81 I want to use 80 so I can host my website and every one can access it without the need to put [url]:[PORT] at the URL

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Ubuntu :: Package Seems To Be Blocking Itself?

Jun 8, 2011

I'm trying to install libbz2-dev on my labtop.I'm running Kubuntu 10.04.Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming.

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Ubuntu Security :: How To Check What The UFW Is Blocking

Mar 26, 2010

I can see what Firestarter is blocking in the Firestarter/Events tab, but after reading all the man pages of UFW, I still don't know how to check what the UFW is blocking.

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Ubuntu Security :: Ufw Not Blocking Ports?

Apr 1, 2010

After reading a lot about networking and security I decided to check the security of my own ubuntu box. So I went installing Nmap and discovered that port 139 was "open". Since I 'd read how to use ufw I created a deny rule for port 139. After a second scan with Nmap it still said that port 139 was open as shown below.


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Ubuntu :: Keyring Error Blocking VNC?

May 11, 2010

I'm trying to use VNC on my headless desktop server that's running lucid, but I can only use SSH because a pop asking me to unlock the keyring shows up every time I try to use VNC. I don't have a monitor for that desktop, so I was wondering, is there any way to remove the keyring/to automatically unlock it during autologin? I don't remember what a site I found it on, but I used this to remove my keyring yesterday. It's no longer working today.

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Ubuntu Installation :: Blocking The Application In 10.04?

May 25, 2010

I need assistance blocking application in Ubuntu 10.04. block all applications for certain users if they do not exist in a certain directory.For example,we would like to prevent users from launching a portable copy of Firefox from a portable HDD or Flash drive.

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Ubuntu Security :: Firestarter Keeps Blocking Ip's?

Mar 8, 2011

im having a bit of a problem with Firestarter, i have Transmission opened and i am downloading a movie but when i check Firestarter i see hundreds and hundreds of Ip's that are blocked, and like 10ip's every second that get blocked.


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Ubuntu Security :: Ufw Is Blocking Some Port 80 And Should Not?

Apr 15, 2011

I have the default to deny all. The only rule I have in there is:

To Action From
-- ------ ----


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Ubuntu Security :: UFW Is Blocking Connections Even Though It's Set To Allow For In/Out

Aug 1, 2011

I might be misunderstanding the log but it looks like UFW is blocking connections. I want to allow all incoming and outgoing. I guess what I'm saying is that the servers on my computer will open ports but all other ports should respond with closed just like a default Ubuntu install. Trying to use UFW to monitor connections without really doing any firewalling.

Aug 1 07:14:07 universal-mechanism kernel: [311111.963762] [UFW BLOCK] IN=eth0 OUT= MAC=00:1f:c6:8a:e9:66:00:01:5c:32:f4:c1:08:00 SRC= DST= LEN=40 TOS=0x00 PREC=0x00 TTL=233 ID=51984 DF PROTO=TCP SPT=80 DPT=54466 WINDOW=8201 RES=0x00 RST URGP=0

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Ubuntu :: Ufw Blocking RST And ACK Packets When Rules Should Allow It

Aug 31, 2010

I've setup ufw rules on my system but noticed that the rule i created to allow traffic from my local network is still dropping some RST and ACK packets. here's part of the output of dmesg


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Ubuntu Servers :: Cox Cable Blocking Port 80?

Jan 30, 2010

So first off, it probably seems this question has been asked thousands of times before. but I did do a search, mostly archived posts that ended up being something other than a true ip blocking of the port. [URL]..

So my port 80 is truly blocked. Ive tried setting up the port forwarding on my router, Ive tried manually allowing all traffic on port 80 through ip tables. Ive even dabbled with setting up something like openDNS to see So far nothing, Im only available on my local network.

There has to be some way to do a redirect though. even something as simple as an htaccess file redirecting [URL].. xxxx (the space is there to avoid my url being interrupted by a smiley

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Ubuntu Servers :: SquidGuard Not Blocking Sites

Mar 16, 2010

not blocking sites


dbhome /var/lib/squidguard/db
logdir /var/log/squid
dest block {
domainlist block/domains


under db I created a directory block where I created a domain file and a urls file dosen't seem to be working

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Ubuntu Multimedia :: ATI & GLX: Mesa Blocking The Driver?

Apr 2, 2010

Once again I'm trying to get Enemy Territory running on my system. However as usual my graphics card is being a bitch. First of all some system information:

$ uname -a
Linux abel 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 05:23:09 UTC 2010 i686 GNU/Linux


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Ubuntu :: Wine Blocking MSI File From Launching

Jul 4, 2010

I've been able to run *.*msi files in the past through WINE. Apparently the latest version of Ubuntu is blocking the action of launching my *.*msi file. Any way of unblocking this? Uploaded with ImageShack.us. BTW, the app I'm trying to install is Steam.exe.

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