Here we compare compatibility of a few Web cameras with Ubuntu 8.04 (Hardy) and Fedora Core 8. Please note that in 2011 situation the improved significantly, and the article is rather outdated.Read more
$ java -version gij (GNU libgcj) version 4.1.2 20080704 (Red Hat 4.1.2-44) $ alternatives --install /usr/bin/java java /usr/java/jre1.6.0_14/bin/java 2 $ alternatives --config java There are 2 programs which provide 'java'. Selection Command ----------------------------------------------- *+ 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java 2 /opt/jdk1.6.0_07/bin/java Enter to keep the current selection[+], or type selection number: 2 $ java -version Java HotSpot(TM) Client VM (build 14.0-b16, mixed mode, sharing)
Since Yum does not have a force flag, rpm commands must be used along with Yum to do some heavy lifting. Here are a few ways to force the reinstall of a broken package on a Yum Managed system. Yum Remove and then Install.The easiest solution is to yum remove the package and then yum install the same package. If there are too many dependencies at stake with the package in question, try another method.
yum remove PACKAGE yum install PACKAGE
Force Erase and then Yum Install.RPM dependencies sometimes make a simple yum remove impossible and Yum will want to erase your entire OS before moving on. In this case, use rpm to force erase, then yum to install.
rpm -e --nodeps PACKAGE yum install PACKAGE
Prune RPM Database and then Yum Install.If your package install is so corrupted that an rpm -e is dangerous or impossible, even with --nodeps, remove the package from the local RPM database to trick yum into reinstalling the package. No files are deleted when using rpm -e with --justdb.
When you run Qip for the first time, wine detects and attempt to show a web page. Let it install GECKO or manually do it: download and install Mozilla ActiveX Control 1.7.12. Ignore installer's requirement to point to mozilla directory.
Obtain and copy msvcp60.dllinto /system32. Copy Mozilla Control DLLs into /system32:
find ~/.wine/dosdevices/c\:/Program\ Files/Mozilla\ ActiveX\ Control\ v1.7.12/* -iname '*.dll' -type f | while read x; do echo cp "$x" "~/.wine/dosdevices/c\:/windows/system32/"; done
and see the reason.If it stops pending on reverese DNS lookup, check twice your DNS zones for duplicate records.Also restart your DNS server and see what it spits in /var/log/messages. If it pends in the gssapi-with-mic authentication, edit /etc/ssh/ssh(d) and set
Another reason for hang could be slow DNS. SSH uses reverse DNS check of incoming IP address.
I'm using an HP DeskJet 840C connected to the parallel port of a Fedora Core 5with cups-1.2.5-1, hpijs-1.6.6a-1.1, and hplip-1.6.6a-1.1.All packages are binaries from the Fedora repository. The printer has been successfully installed using the hp:/ backend, andthe device URI in CUPS is hp:/par/DESKJET_840C?device=/dev/parport0. Thebuilt-in test page works, and CUPS can produce its test page -- however, allprintouts are unreadable due to what I presume are cartridge alignmentissues. If I attempt to run hp-align, I get the following:
HP Linux Imaging and Printing System (ver. 1.6.6a) Printer Cartridge Alignment Utility ver. 2.5 ... Using device: hp:/par/DESKJET_810C?device=/dev/parport0 [WARNING]: No status available for device. An alignment page will be printed. Please load plain paper into the printer. Press to continue or 'q' to quit. [ERROR]: Channel write error Traceback (most recent call last): ... raise Error(ERROR_DEVICE_IO_ERROR) base.g.Error: ('Device I/O error', 12)
The fix is:
$ su $ cd /usr/share/hplip/data/xml $ gvim models.xml
Running "strace -f -o trace.log some_multithreaded_app" (BTW -f is importantas otherwise strace wouldn't print at least pids) on Fedora Core 2where the application links with the NPTL implementation by defaultcan very probably freeze sooner or later at a point like:
futex(0x583844, FUTEX_WAIT, 2, NULL) = -1 EINTR (Interrupted system call)
I found this can be helped by disabling NPTL via running strace as(don't ask me why 2.4.19 ;) )
WARNING! This is for advanced users of the shell, this is NOT a howto or tutorial. The thing is, I googled how to uninstall cpanel and for once in my life I came up empty.. And certainly the cpanel official sites themselves don't provide any instructions other than to say "Dont uninstall it, reinstall your entire operating system without it.".. they sure don't seem confident that they know exactly what their code is doing. At this point this is more of a series of notes than a guide. Ok now go have some fun!
Why? Because I have always built my servers, php installations, perl installs, ruby, iptables, everything from source. I read the INSTALL/README docs, I read the man pages, and I read the info pages as well. I google for configuration advice, I google for tips, and I don't need a web-based perl script messing my stuff up!
The main problems I had with cpanel, which really is a great bit of software for millions of website developers, is that it was incredibly sneaky! I used it for about 6 months and spent that entire time trying to figure out what the heck it was doing. A couple issues that I really disliked, it takes over your bind install, it takes over your apache install, it takes over your php install. And although it does let you configure some things (very few) for custom configurations and the like, I just don't need any of that. By removing the darn thing I am saving GIGS of space on my server, tons of bandwidth, and most importantly to me I am saving CPU and processing time along with RAM and IO speed.Read more
bidilink is a general purpose Unix tool for linking two bidirectional data streams together. It extends the standard Unix "filter" paradigma to bidrectional streams.
socat is a relay for bidirectional data transfer between two independent data channels. Each of these data channels may be a file, pipe, serial device, pseudo terminal, a socket, an SSL socket, proxy CONNECT connection, a file descriptor, readline, a program, or a combination of these.Read more
Записки старого сисадмина (C) 2007-2011 by Silver Ghost AKA Дмитрий Лялюев.
Доброго времени суток, уважаемый читатель. Я конечно понимаю, что я далеко не известный и уж тем более не писатель. Я самый обычный блоггер, и еще более давний системный администратор. Для чего же мне тогда надо это все? Для чего мне сидеть ночью и набивать этот текст, компоновать свои же блоггерские посты в эту PDF «книгу»? Все довольно просто. В блоге я уже писал для чего я это делаю и первой же заметкой поставлю как раз ее.
Tesseract is an Open Source OCR Engine. Orignally developed at Hewlett Packard Laboratories Bristol and at Hewlett Packard Co, Greeley Colorado, all the code in this distribution is now licensed under the Apache License.
The TurboPrint printing system for Linux not only offers high-quality printer drivers, but also comfortable tools for printer monitoring, error diagnosis, color profile management, printer configuration etc.
Our drivers support nearly all features of your printer like special print media, CD/DVD printing on certain printers, photo inks and highest print resolution.
A highlight of TurboPrint is the new integrated color management – it is easy to use and ensures perfect colors. You can choose the document color space, adjust the light source and correct color & grey balance.
TurboPrint comes with a new printer status monitor that continually shows printer status, remaining ink and print jobs – even over a network connection.