solution add jsr173_api.jar to you java build path.
an unknown item is declared as the root
If you get this error after changing flex/flash versions, in eclipse go to window -> preferences -> flex/flash -> Installed Flex SDKs -> Reset SDK list choose the sdk to use hit apply and restart eclipse.
My First 10k run
Today I ran my first ever official 10k and it was something else, I have run the same distance several times myself while just jogging but it was different while doing it for competition, and the course was not forgiving at all which I had heard from a few people who had participated at the us10k classic before. I was happy with my results though coming in at 500 0f 2998 timed racers, I was able to set a personal best time of 50 min my earlier record was 1h2min for the same distance and my race number is here just so I can always remember. After the race I got to learn that the lady who was first in women had parked her car at the finish line jogged to the start line started with everyone and finished fourth overall in a time of 35min, it felt impossible for me to comprehend this especially since I felt as if my body was about to fall apart and I had only ran half the distance she ran this morning.
Next am looking forward to my first half marathon.
p7zip Command Line
In CentOS to use p7zip from command line the cmd is 7za and not p7zip or 7z, I wasted some time on this as most manuals online tell you to use p7zip [options] filename.
To extract a file you would do:
7za x filename.7z
You can substitute the .7z extension with whatever archive extension you are trying to xtract e.g tar,gz,zip etc as long as its an extension that can be handled by 7zip which should be most of the common formats.
After reading several articles on this topic I decided to try it, so I went to the local grocery store and bought some sprouts, started up my blender to make my smoothie as usual but this time I added raw sprouts into the mix. To tell you the truth the first few days do take some getting used to. The raw sprouts have a distinct flavor and smell which can take some adjusting to. Right now am on my second week and I can drink it without a problem. I have come to love sandwiches from mellow mushroom as they add sprouts to their veggie sandwiches.
Black screen FreeNX/NX
I have been running my FreeNX for several years with no problem then all of a sudden I tried to log in today and I received a black screen. After several searches I found out that it’s a problem with the window manager temporary files being corrupt. Just to test I changed the settings on my nx client to use another window manager “KDE” in the system and it worked. To resolve the issue I SSHed into the box and deleted all gconfd, orbit and mapping tmp folders/files for the affected user. Tried to reconnect again and it worked.
Great Linux CMDs
In this post I will be making a list of great Linux cmd’s that I find all over the net one great place to stop by is commandlinefu.com they have a great deal of important linux cmd’s.
First cmd is mtr, it combines your ping and netstat cmd’s. In CentOS you have to su- to run this cmd:
The following cmd I just started using recently and it has been a life saver I don’t know how I went all that time without it. The cmd is screen it works like your VNC or NX but for the terminal, it is especially handy if you SSH into your box but you don’t want to leave the terminal running waiting for a task to finish, you just start a screen run your cmd and detach from the screen. Now even if your connection gets disconnected or you disconnect yourself all you have to do when you connect again is run “screen -dR” and you are connected back to your earlier session and you can check on the progress of your task. To list screen instances “screen -ls”.
Ctrl+a ->pressing this twice moves to the next screen
Ctrl+a+c ->adds a new screen to you screen instance
Ctrl+a+d ->detach from screen session
Ctrl+d ->exit a screen
screen -dR ->connect to/start a screen session
Mount a drive world writeable
mount -t ntfs-3g -o umask=000 /dev/drive /mnt/mountpoint
mount -t cifs -o umask=000,username=username,password=password //ipaddress/folder /mnt/mountpoint
by adding the option umask=000 any user can write to the mounted folder, this comes in handy when you want to write to a mounted drive as a regular user. I have had a problem with some slack based distro’s not accepting this option in the current format and might need to play around with the mask cmd placement to see what works.
Update vs Clean Install
I just upgraded to CentOS 5.5 and while talking to a friend of mine we got into talking about updating vs clean install. After my update I had to restore to an image before the update as my mail system was not working, checked all packages contained in the update and zeroed the cause to a sendmail update. Which was disabling my current MTA “postfix”. I fixed that and another issue with my open office and I was ready to go. While my friend prefers to just do a clean install.
To me it just comes down to preference, if you have a heavily customized system it’s time saving to just do an upgrade, but if you are running a generic system with few modifications a clean install might be the best way for you.
Do a back up a recoverable system backup or a backup for all important docs you have on system before you proceed with the commands below
yum clean all
yum update glibc\*
yum update yum\* rpm\* python\*
yum clean all
Check your new version with :
IP change notification by email
I had installed ipupdate while trying out dnsexit.com and loved its simplicity, dnsexit.com provides a great service but in the end I chose to stick with my current registrar lqconsulting who is a major supporter of Linux users, they also run linuxquestions.org of which am a member. I had tried to configure ddclient to work with my registrar but I did not have enough info about my registrar’s requirements of the client to work with their site. So in the mean time I have edited ipupdate to send me an email everytime my ip address changes while still doing evrything else it does. I prefer it this way over updating my registrar, since I do a lot of remoting in and it takes a few minutes before a new IP is updated to nameservers “around 20min”, but if I already have my new IP in my mail when it changes I don’t have to wait until nameservers update my site IP for me to be able to remote in. I have provided the edited file below for anyone who wants to use it also the tar,rpm and deb files that install it.
For install instructions go to:
My edited file
You can replace the installations ipupdate.pl with mine for v1.6-2 or just copy over my additions to them whichever works for you.