Upgrade to Feisty Fawn(Part One: Edgy first)

Three days ago, Ubuntu 7.04(Feisty Fawn) arrived. I'm still on Dapper, I'm very happy with it but decide to upgrade to Feisty because I want to try firefox2, this post says it does better hardware compat and I can't wait for next lts version that someone said "may be 2009".

I'm not sure upgrading from Dapper to Feisty directly is possible or not. But ubuntu site say "You can only directly upgrade to Ubuntu 7.04 ("Feisty Fawn") from Ubuntu 6.10 ("Edgy Eft")", so go to Edgy by

pnix@pnix-a7:~$ gksu "update-manager -c"

It will lunch update-manager with option -c(or equivalently --check-dist-upgrades). This option switch instructs Update Manager to look for upgrades. By default, the Ubuntu 6.06 LTS release will not offer that automatically because of its long support cycle and high stability. Then click the "Check" button.

then need to download about 771 M

Let's go. Hope that upgrade will be perfect

Comments

Fixing sendmail take a long time to start

I notice that my database box[FC6+Oracle10.2] take along time to startup. Sendmail and sm-client very very slow to start[ about 5 minutes ]. There's something wrong in /etc/hosts file. 'newalises' command take long time to update and finish with error below. [root@ora10g ~]# newaliases WARNING: local host name (ora10g) is not qualified; see cf/README: WHO AM I? /etc/aliases: 76 aliases, longest 10 bytes, 765 bytes total [root@ora10g ~]# cat /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost 192.168.1.55 ora10g [root@ora10g ~]# To fix this, custom hostname[ora10g] need to append to localhost line in /etc/hosts. [root@ora10g ~]# cat /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost ora10g 192.168.1.55 ora10g [root@ora10g ~]# newaliases /etc/alia

Too many open files

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using Class.getResource() load resource file in Eclipse

There are many ways to load resource file in java app. What sun recommended is using Class.getResource(" resource_name ") or Class.getResourceAsStream(" resource_name ") then you will get URL and InputStream respectively. If resource_name is specified without "/", it will be prepend with Class package. So resource file must be in same place[folder structure] as the Class. What I love to do is call getResource() with "/" and put resource file at the root of package. This way i can have separate resource folder. below is in Eclipse, 1. From Package explorer right click src folder->click import 2. In import dialog, Choose General->File System ->next 3. from directory:->Browse to your resource folder. 4. to folder:-> I add "resource" as a folder name under src folder. then click "Finish". In the code, load resource with this.getClass().getResource("/resource/buttons1.png") or this.getClass().getResourceAs

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