Networking :: Ensure Reliable RS-232 Connection?
Oct 15, 2010
I have a configuration file for a network device(2100 lines). This device is configurable only over console line. If I copy chunks of those lines into terminal(I use minicom), there will be mistakes (sometimes some characters missing, space characters added etc). Hardware flow control and software flow control doesn't help either. I tried with cu utility, but same issues appeared. There will be mistakes even if I copy in ~100 line parts. What causes those missing/added characters? How to avoid those?
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Oct 18, 2010
Am attempting to setup an NFS partition for use by a number of users. I would with to use quotas to ensure equitable use of the HDDs resources. However, I keep getting the following error:
[Code]...
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Jan 18, 2011
I'm looking for an inexpensive but reliable web hosting service. Have been using Byet, but they have yet to successfully renew the subscription, so am in the market for another service. It doesn't need to have great tech support, just reliably keep the site up. cpanel, of course, is a plus.
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Jul 24, 2009
Fedora 10 (dual boot w/ XP) on Dell Optiplex with a Dell wirelessntennaI am on a university campus with campus-wide wifi network (so no router). I have a wireless HP printer that I want to be able to print to using an ad-hoc connection. The wireless antenna, networking, and wireless printing are all working in Windows XP (so hardware is OK). However, on the linux side, the wifi is really really finicky.
When I first boot up to fedora, it usually connects no problem to the campus-wide wifi network. If I try to switch to the ad-hoc printer network (which it sees), will not connect and, furthermore, it will no longer connect to the campus-wide network (and sometimes it doesn't "see" this network at all). It seems that restarting the Network Manager service sometimes helps to reconnect to the campus-wide network, but not always and I can't connect to the ad-hoc regardlessNOTE: I'm just barely a linux user, and I didn't set up my system - don't assume that I did anything that would be common sense and, if you can, walk me through your suggestions.
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Sep 26, 2010
I have a dual booth system (ubuntu (64 bit) and windows 7 (also 64))... In both systems I have trouble with my wifi:Sometimes it works for a few hours without trouble and then I stops working every 10/15 seconds after reconnecting. In windows it keeps on reconnecting, but in ubuntu sometimes also the wifi logo/picture disappears from my panel, so I can't start wifi again or see it's status.
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Mar 8, 2010
how do I ensure a gnome-terminal is kept in focus?
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Feb 3, 2009
I have 3 WD External USB hard dives. 2 are the same and are rotated for backup purposes and my system assigns them both to /dev/sdb (one is only plugged in at a time), this is fine.The 3rd drive is used for a different purpose and may or may not be plugged in at the same time as one of the others.How can I make the 3rd drive be allocated to /dev/sdc all of the time whether one of the other drives is plugged in or not?
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Mar 16, 2011
Password strength in Linux can be ensured by setting parameters in /etc/pam.d/common-password file. But these policies apply only for non-root users, when they set password for themselves.s there any way to ensure strength of passwords assigned by root?Example: Normally root can assign passwords like "hello" "password" etc. Is there a way to ensure that passwords assigned by root must contain a special character and a digit as mandatory?
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Feb 10, 2010
How can I check if Ubuntu deletes all the content in /tmp folder at each shutdown
(without trial and error)?
How can I tell Ubuntu to delete it?
What about the deletion of other tracks like swapfile at shutdown?
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Feb 14, 2010
When update ubuntu 8.04 amd 64 show this message: Could not download all repository indexes. The repository may no longer be available or could not be contacted because of network problems. If available an older version of the failed index will be used. Otherwise the repository will be ignored. Check your network connection and ensure the repository address in the preferences is correct. Failed to fetch [URL] 404 Not Found. Some index files failed to download, they have been ignored, or old ones used instead.
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Jun 21, 2011
I need to know particular mount point mounted or not before send data to that mount point.Are there any commandsi used this command. mount -t nfs 172.16.102.50:/root/ESSR_share /root/shared_storage/pc50 -o rw,hard,intr but it take long time (when machine(172.16.102.50) is not available)
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Jan 8, 2010
I was considering adding the below to my RHEL5 system's /etc/pam.d/system-auth file.
password required pam_cracklib.so try_first_pass retry=3 minlen=8
dcredit=-1 ucredit=-1 ocredit=-1 lcredit=0
auth required pam_unix.so nullok try_first_pass
[code]...
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Aug 10, 2010
In a research environment how can I ensure that all RPMs / packages that appear on one system will exist on another? I.e. when using rpm -qa all libraries on one system will be there on another. The reason for this is to ensure they are as close as possible. Is there an easy way to do this without dealing with a larger management suite tool?
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Jun 9, 2010
How do I ensure that my home partition does not get deleted the next time I reinstall Ubuntu, as I can see there is a choice between formatting the whole drive and manually partition it, but if I reinstall won't I delete the home partition as well?
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May 17, 2011
I use Skype on my computer at work for IMs, I don't even try to use it for voice or video calls, but I constantly have problems with it.It seems like what's happening is a backend part of the program keeps freezing. The UI is responsive, but I'll notice when I try to send messages, I'll get a 'caution' icon next to them with a tooltip reading "Your message has not been delivered". If I try to quit Skype, it hangs and I have to kill -9 it.So my question is, is there a more reliable way to use Skype in Ubuntu, maybe a different program than the official Skype client? Remember, I only care about text chat.
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Dec 17, 2010
I'm running succesfully Debian 6.0 after first trying Debian 5.0 and ran into missing partitions. This is solved by using Debian 6.0 (Beta 2).
Now it's NVidia's turn: Under Ubuntu (yes...i know it by now...) you had to install a proprietary driver for NVidia to ensure that 3D was supported. What about Debian? There's nothing like this under Debian? How do i know if 3D is supported?
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Apr 4, 2011
The graphics card on a openSUSE11.4-32-bit system is a ATI RV530LE [Radeon X1650 PRO] It looks as though xorg sets it up with the RV535 or RV560 chipset if the radeonhd driver is selected Is there a way to ensure the RV530 chipset version is loaded when booting.
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Jul 8, 2010
After moving a website folder on my local development machine to another drive, then moving it back, I got a 403 error. Most of this problem had probably to do with rights that got messed up. After deleting the code and restoring it from SVN, the rights seemed allright. The error stayed however.
The setup is a bit complex, as follows:
I have Ubuntu 10.4 as development machine, trying to mimic the server as much as possible We use Eclipse + SVN and I create all projects in a local folder under my user account In /var/www-vhosts I create folders for each vhost, like this one: test.localhost test.local/index.php: includes the index file of the project
test.local/.htaccess is a dynamic link to the htaccess file in a project subfolder
I get the following error in the apache error log:
The problem seems to be the .htaccess file, or the link to it. When I empty the htaccess, nothing changes When I remove the link, the index-include produces some output (in the apache error log) When I remove the link and replace it with the actual file, I get another error:
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Apr 4, 2010
Any suggestions?
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Feb 17, 2010
Since a few days all of my computers (3) running Ubuntu 9.10 report on startup that my external drive has "lots of bad sectors".I have checked this disk on Windows XP with chkdsk and with the SeaTools diagnostic tool dowloaded from Seagate. Both report no problems.Does anyone else suspect these Ubuntu "bad sector" warnings are unreliable?
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Jun 23, 2010
I installed ubuntu server 10.04 32-bit and I installed XRDP so I can connect to it using RDP sessions. I was wondering if there is a better alternative to it. I have the following issues with it: 1. When I connect to the server locally using rdp it works just fine the first time. Then when I close the session I cannot connect to it again (it says connection timed out). Then if I uninstall then reinstall it will work again for another time then do the same thing. 2. I receive a protocol error when using Windows 7 or RDP version 6.1.7600 (Newest RDP version)
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Jan 14, 2010
Looking for the latest sources for s/key, which is apparently now called OPIE. The root site for this appears to be on [URL].. but that is off the air. Anybody know what the current version is, and reasonably trustable mirror that carries opie?
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Dec 27, 2010
Things beyond my control are causing me to rush a bit in getting the website moved. I'm working hard to try and get it done, but something else has come up that SSL Certificate.I know that our website's "basket" area is protected by an SSL certificate to ensure customer information, especially credit info, is secure. With the move to Amazon's service, it looks like I may need to create our own self-signed SSL certificate to ensure the basket area remains secure.
I have found guides that walk through how to make one yourself and configuring apache to allow it, but something else has come to mind. The guides I found don't really indicate where the SSL certificate goes afterwards, and also doesn't suggest which sections should be governed by the certificate (as only the basket section uses it, not anything else). How would I find out that information?
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Jun 2, 2011
Have used 10.04 for almost a year now, and the 'upgrade' now beckons.How can I ensure that my programs and Download files remain intact following the process? I already have 11.04 as an .iso on cd, but am unsure how to proceed.
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Jan 26, 2010
I am looking for a Backup Tool running well on Fedora 12. GUI or command line are both fine but it should be easy to use yet transparent in case of an error. Also not only creating but using it to restore the system should be easy to do. I would like to save on a different partition AND burn it on DVD and it should be as small as possible.
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Feb 4, 2011
Is gscan2pdf a reliable and good package now?My text scans are washed out and hard to read. And when I make setting adjustments the program freezes and needs to be restarted. Is there package from synaptic adequete or should I get an rpm version or what?
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Feb 19, 2010
Does anyone know how I can get a good reliable theme for openSUSE 11.2, that which is easy to install (I have little experience)?
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Jan 22, 2010
I have been running a fedora server without issues for many years and recently updated to FC12. It turned out that there is a bug in OpenSSL in FC12 that caused me a lot of problems and I had to build apache, mod_ssl and OpenSSL from source to get it working.I'm now looking at migrating to another distribution becasue Fedora is not appropriate for a production server environment in a growing company.
What I want to know is what is the most reliable distribution with regards automatic updates (bug free that is)? I'm comparing RedHat, Ubuntu LTS, Debian, etc. at the moment. Is there any report that looks at this topic?I'd expect RedHat would have the best, but I also have to take cost into account as it is the only platform that you have to pay for these updates.I read this but it seems to quickly move away from the "bug-free" question initially asked.
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Mar 3, 2010
I'm wanting to create a one-time snapshot archive of all my data in case something catastrophic ever happens to my main hard drive and my backup drive. I should add that I update my main backup regularly, which means that I wouldn't notice any creeping data corruption problems until it's too late...which is another reason a one-time snapshot is so important.Since I'm archiving a snapshot of all of my data at once, only a hard drive is big enough to handle the job. (I'll copy a small fraction - the truly 100% irreplaceable stuff - to DVD-R's too, but that doesn't mean I particularly want to lose any of the other stuff either.) Unfortunately, this means my storage medium doesn't inherently have any CRC's, error correction/redundancy bits, etc. built into it like data DVD's might.
So: What archive format would you suggest using for maximum reliability and resistance to corruption?My main concern is making sure that I can still open the archive and extract surviving files even if some of the bits (or the entirety of other files) go corrupt. This is my last-ditch fallback archive, so if I ever need to use it, I really, really don't want to get a message saying the archive is corrupt and cannot be opened at all! Because of that, it's important that the individual files and folders are compressed separately from each other...if at all. I don't care about the compression ratio, and I'd even be happy if the archive was 150% the size of my data thanks to a gigantic recovery record. I also care about CRC's and such, since I'll want to know which files/folders/etc. are corrupt vs. which ones are still intact.
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Mar 28, 2010
i want to buy a laptop and stuck between choosing a Dell or Toshiba. Which brand it more reliable and last longer(as in how many years) from your experience or knowledge?
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