WebDav and fstab

digitaleagle How To, Uncategorized 3 Comments

We have a webdav enabled web site that I wanted to connect to on a regular basis.  I wanted it to mount on my filesystem as opposed to just using it in nautilus so that I could use meld to copy files to it.

So, I added a line to the end of /etc/fstab   (sudo gvim /etc/fstab):

https://mywebsite/~docs    /dir/to/mount/on    davfs    user,noauto,rw    0    0

Then, I added the following line to /etc/davfs2/secrets:

https://mywebsite/~docs    myusername    mypassword

Originally, I had just the unsecure http:// url.  But, it gave me this error:

/sbin/mount.davfs: Mounting failed.
401 Unauthorized

I fixed it by changing the urls to https://.

When I mounted it as root, it worked fine.  But, when I mounted it as my regular user, I got this message:

/sbin/mount.davfs: program is not setuid root

To fix it, I had to run this command:

sudo chmod u+s /sbin/mount.davfs

Then, I changed the file /etc/davfs2/davfs2.conf.  I changed the dav_group setting.  For me, I found a line that said “dav_group staff”.  I replaced staff with my username, which is my default group.  The thread I read mentioned using the users group.

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Oracle on Eclipse

digitaleagle Eclipse, Software to Watch, Uncategorized Leave a comment

I saw the new release today of Oracle Enterprise Pack for Eclipse.

I found this quote on Oracle’s website:

Eclipse is one of several open source communities (Apache, PHP, and Glassfish are other examples) in which Oracle invests significant development resources. A Strategic Developer and Board Member of the Eclipse Foundation, Oracle is a leading participant in the Eclipse Web Tools Platform and Technology projects.

It is just interesting to me since I work with Oracle’s PeopleSoft software.  I waiting for Eclipse to be used with PeopleSoft!

Jasper Reports

digitaleagle JasperReports, Java, Uncategorized Leave a comment

I have found Jasper Reports to be a great tool for allowing printing from Java-based applications.  I am using the iReports tool to create the reports in a GUI mode much like Crystal Reports.  Then, with a few lines of Java, I can display the report to view the report and allow him to print.

Jasper Reports Home Page

iReport Home Page

SourceForge Page

Right now, I am trying to figure out how to display totals on the page.  I found this nice article explaining the basics:

Open Source Reporting with JasperReports and iReports (Totals on Page 3)

Gpsd: Fixing for Ubuntu

digitaleagle gpsd, How To, Install Help, Uncategorized 1 Comment

I have an LT-20 Delorme Earthmate GPS.  It may not be the best GPS, but it gets the job done.  Getting it to work in Ubuntu was no easy feat.

I had to fix a bug in a cypress module.  I followed the instructions from here.

To get the kernel version, I ran:

uname -r

Then, to install the kernel source, I ran:

sudo apt-get install linux-source-2.6.24

Then, I changed directories into the installation directory and unzipped the source:

cd /usr/src
sudo tar -xvf linux-source-2.6.24.tar.bz2

Then, I copied the two files:

cd linux-source-2.6.24/drivers/usb/serial/
sudo mkdir /usr/src/modules
sudo cp cypress_m8.h cypress_m8.c /usr/src/modules/

Next, I created the make file (note that I have installed gvim.  I saw a note saying that they had problems using the gedit text editor):

cd /usr/src/modules
sudo gvim Makefile

And, I pasted these lines into the Makefile:

obj-m := cypress_m8.o
KDIR := /lib/modules/

$(shell uname -r)/build
PWD := $(shell pwd)
default:
$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules

Then, I edited cypress_m8.c and commented out line 408.  The original instructions have more detail on this.  I thought the line number might be different, but it was the same as the original instructions.

When running make (sudo make) I had trouble with “make: Nothing to be done for `default’.” message.  I just opened the file and deleted and readded the tab in front of the last line.  Then, it ran fine.

Then, I ran the command:

sudo install -m 644 cypress_m8.ko /lib/modules/`uname -r`/kernel/drivers/usb/serial/cypress_m8.ko
sudo depmod -a

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Convert Youtube Videos

digitaleagle ffmpeg, Uncategorized Leave a comment

I found this command that successfully strips the audio into a wav file:

ffmpeg -i Blessed_Be_Your_Name.flv -vn -acodec pcm_s16le \
   -ar 44100 -ac 2 Blessed_Be_Your_Name.wav

Here is the same command that includes the video that will play in Window’s Media Player:

ffmpeg -i Blessed_Be_Your_Name.flv -vcodec msmpeg4v2 -acodec pcm_s16le \
   -ar 44100 -ac 2 Blessed_Be_Your_Name.avi

I was able to use this command to convert an flv file from a downloaded Google Tech talk to an mp4 file that I could play with mplayer in Linux:

ffmpeg -i Using_bluemail_to_renew_the_design_and_study_of_enterprise_email.flv \
    -vcodec xvid -acodec pcm_s16le -ar 44100 -ac 2 \
    Using_bluemail_to_renew_the_design_and_study_of_enterprise_email.mp4

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Thunderbird

digitaleagle Email, Install Help, Thunderbird, Uncategorized Leave a comment

Well, work demands are forcing me to begin to use a fat client for my mail.  Up until now, I have been using GMail successfully.  So, I am choosing Thunderbird.

Here is what I like about GMail:

  • I can access GMail from any computer (I used to work on multiple computers depending on the client/day of the week)
  • I can manage multiple email addresses (Each client was giving me an email address with their domain name)
  • I like the GMail interface
    • threads instead of messages
    • labels
    • Ability to type the name of a person in the to box

But, there were a few features that I needed that forced me to switch to Thunderbird:

  • HTML Signatures (or at least formatting)
  • Different signature for each email account
  • Use a third party SMTP server — sending through GMail leaves an “on behalf of” message even if you choose to send with another email address.

I have started with two extensions that I thought were helpful:

One of the frustrations that I found was that when I replied to a message, it would put the quoted message above my reply.  Most email programs place the original programs below the new message.  I found a thread that explains you can change this in the Account Settings, Composition and Addressing settings.

The signature is in the Account Settings as well.  It is on the main page for each account.  I created an HTML file in my home directory and attached it to account.

Zindus was easy to configure.  You can access the setings in Tools > Zindus.  I just entered my GMail account information and I was off.  I did have an issue with duplicate contacts because I had already sent a couple of emails to people already in my GMail contact list.  Thunderbird automatically adds to your contact list people to whom you send an email.  I just deleted those contacts, and everything synced fine.

The Lightning settings were in the Preferences — that is in the Edit menu for Linux and Tools menu for Windows.

The Provider for Google Calendar was a little more difficult to figure out.  I finally found some instructions on the wiki.  I had to open the Google Calendar web interface.  Then, if you click settings on the calendar list, you get your list of calendars.  Next, click on the link for your specific calendar that you want in Thunderbird.  At the bottom of the settings list, you will find the XML links.  I right clicked on the XML button for the Calendar address and selected Copy Link Location.  Once I had the link copied, I went to Thunderbird.  First, I had to click on the Calendar button on the lower left hand corner of the screen.  Then, I could choose File > New > Calendar.  I chose a calendar on the Network.  Next, I chose a Google calendar and pasted the XML link into the Location.  Then, it asked me to log into the Google account.  Finally, it asked for a name/description for the calendar.