Adobe 8 Error on FC 8

After installing Adobe Reader 8 on FC 8 I received the error message, “Unable to find HTML rendering library (libgtkembedmoz). Please specify the folder location in Edit- >Preferences > Internet..”

This fix in my case was to copy the XULrunner package to the /usr/lib folder (I’m on an AMD 64 box, but I did not copy to /usr/lib64) as describe on the following link and it worked fine. I downloaded the latest version of XULrunner here. Note that after copying XULrunner to the /usr/lib folder, you need to update the preferences in Adobe Reader.

Here’s the link and relevant excerpt:

Acroread: Adobe Reader 8.1.1 FAQs

Check to see if you have XULrunner installed (you can install the latest XULrunner from here), and find the folder containing libgtkembedmoz.so in the XULrunner installation. Set this folder in the “Preferences > Internet > libgtkembedmoz Folder” preference in Adobe Reader.

Iced Tea

Getting Java up and running properly used to be quite a pain on early versions of RedHat and Fedora. If you’re running FC7 or above and you’re running into Java issues (trouble with web-based Java apps, for example), try installing IcedTea.

Gizmo on FC8 problem

The following was taken from this page at the Gizmo website:

Solution We have identified an issue when using Gizmo Project and the ALSA Plug-in PulseAudio.

PulseAudio is a type of sound server that can be networked meaning you can play music from your computer on other networked computers. More info about this ALSA plug-in is available here PulseAudio.

Currently, this plug-in has been determined to cause problems with LinGizmo resulting in a Crash. We are aware of this compatibility issue and are currently working on a fix.

As an additional note, PulseAudio is selected as the default setup for at least 2 major Linux distributions, currently Fedora 8 and possibly Ubuntu soon to come.

There are a couple of workarounds that can be done, please see below.

1. Configure Gizmo to use OSS in 'Preferences -> Audio' (before logging in). -The drawback is Gizmo will hog the sound device (i.e. no software sound mixing).

2. Prevent ALSA apps using PulseAudio by removing the pulse audio ALSA plugin. On Fedora 8 this would be done w/ the the following command as root:$ yum remove alsa-plugins-pulseaudio

DimSum Chinese language learning software

DimSum is a Chinese-learning java application for annotating Chinese text. It also includes flashcards and dictionaries. In order to run it in Linux, java must be in the user's path. The following lines must be added to the .bash_profile:

PATH=/usr/java/jre1.5.0_09/bin:$PATH export PATH

JAVA_HOME=/usr/java/jre1.5.0_09 export JAVA_HOME

The location and version of java on your machine are probably different from the above.

The simplest way to run DimSum on Linux is go to a command prompt, cd to the directory with the JAR file, make sure java is in your path, and type "java -jar DimSum.jar".

The home page for DimSum is http://www.mandarintools.com/dimsum.html.

FC6 and Acrobat Reader 7.0.8+

If you’re having trouble installing Acrobat Reader on FC6, you might want to read this:

http://www.mjmwired.net/resources/mjm-fedora-fc6.html#acrobat

Or you can get to the link by going to mjmwired.net then clicking on FC6 install notes.

The following was copied and pasted from that site:

NOTE: There is a problem with v7.0.8 and will not work properly in FC6. To fix, edit as root:

[mirandam@charon ~]$ sudo gedit /usr/bin/acroread

Make the following changes:

Line ~418:

From: echo $mfile| sed 's/libgtk-x11-\([0-9]*\).0.so.0.\([0-9]\)00.\([0-9]*\)\|\(.*\)/\1\2\3/g'

To: echo $mfile| sed 's/libgtk-x11-\([0-9]*\).0.so.0.\([0-9]*\)00.\([0-9]*\)\|\(.*\)/\1\2\3/g'

Line ~643:

From: MIN_GTK_VERSION="240"

To: MIN_GTK_VERSION="2040"

Restricting users on SSH

I rarely have to configure the SSH server, and so I never remember how to restrict users. There is documentation readily available for restricting users on SSH2, but I'm still using SSH and there just deosn't seem to be much other there. It's very, very simple. Simply add an AllowUsers line to the sshd_config file. List the users you want to allow following the line, separated by a space but no comma. In SSH2, the same line, along with other variables, is placed in a separate file, I believe named sshd2_config, but that's well documented on the ssh site.

Moodle, PHP4, PHP5, and GoDaddy

There is a discussion on the Moodle site regarding a bug with themes on sites hosted by GoDaddy. GoDaddy runs both PHP4 and 5, which may be part of the problem. The fix appears to be to change the following value in the styles.php file of the standard theme, and possibly of the theme being used as well:

filemtime(’styles.php’)

needs to be changed to:

time()

That took care of it for me. I changed it in the theme I had set as the default, but kept having the problem until I changed it in the standard theme as well.

The thread on the Moodle site is located at: http://moodle.org/mod/forum/discuss.php?d=41814

FC5, Flash, Firefox

There seems to be a bug that affects Flash installations on FC5. The following two links had information that took care of it for me:

useradd on FC4

If the useradd command fails, try /usr/sbin/useradd [newuser]. Alternatively, instead of logging on using su, use su - (with space before the dash; the dash is actually short for -l, the login option). Then useradd should work by itself. More at this thread.

Skype on Linux: Sound card failure after first call

It appears that a fix for this problem is to go to the sound directory and delete the hangup.wav file. On FC4, this should be located in /usr/share/skype/sound. See this thread for details.

Gregarious feed aggregator

This is a great web-based feed aggregator and it set up on my FC4 server in seconds. Find details at http://gregarius.net/. The Sourceforge download page is located at this url.

DHCP in FC4

The /etc/dhcpd.conf file doesn't exist by default. The thing to do is copy /usr/share/doc/dhcp-3.0.2-14/dhcpd.conf.sample to /etc/dhcpd.conf and make necessary changes. See this discussion for more. Here's the meat of that page:

It seems there are other servers for which one also must copy the conf file from a docs folder. Dovecot?

Jave on FC

To get Java to work in browsers on Fedora, create a symbolic link in the browser plugins directory to the file in the java directory. Example (if already in plugins directory in shell): ln -s /usr/java/j2re1.4.2_05/plugin/i386/ns610-gcc32/libjavaplugin_oji.so ./libjavaplugin_oji.so

Of course, the exact syntax would depend on the location and version of java installed.

Getting Totem to work in FC

The default installation of Totem doesn't seem to work in FC4. To get it to work, uninstall totem using Yumex, then install totem-xine using Yumex using Livna.