無語録むごろく

今天突然用不了ssh

error message 只有

Permission denied (publickey).

http://codept.blogspot.com/2006/11/permission-denied-publickey.html

這裏說只要把

If this happen, set value for ChallengeResponseAuthentication to yes.

那個key 在 /etc/ssh/sshd_config.

回家試一下

這幾天因需要故emerge mysql,發現不知何故要用USE="-berkdb"才能emerge 進去，百思不得其解

首先下載以下兩個文件:

migrate-xscreensaver-config.sh

xscreensaver-config.xsl

把它們都移到 /usr/libexec/gnome-screensaver 之下，方便管理。

把 migrate-xscreensaver-config.sh 變為可執行

chmod +x migrate-xscreensaver-config.sh

以下是把其中一個GLMatrix 轉成 Gnome-screensaver 可用的︰

將工作目錄移到 /usr/share/applications/screensavers/
用以下的命令把原本 Xscreensaver 的設置轉成 Gnome-screensaver︰
你會發現有很多.desktop吧，它們都是 Gnome-screensaver 的設置文件呢！

/usr/libexec/gnome-screensaver/migrate-xscreensaver-config.sh /usr/libexec/gnome-screensaver/xscreensaver-config.xsl /usr/share/xscreensaver/config/glmatrix.xml

之後你會發現在 /usr/share/applications/screensavers/ 多了一個 glmatrix.desktop 文件。

把 Xscreensaver 用的 screensaver 文件移到 Gnome-screensaver 的作用目錄下:

cp /usr/lib/misc/xscreensaver/glmatrix /usr/libexec/gnome-screensaver/

這樣子就成了！開啟 gnome-screensaver-preferences 看一下吧~！

如果你是用 Gentoo 以外的版本，請參考︰
Howto: Add xscreensavers to gnome-screensaver

無聊下的練習作品，寫得不太好，看倌有用的話就拿來用吧！

#/bin/bash

file_name=`echo $1 | awk -F/ '{print $NF}'`
file_name_main=`echo $file_name | awk -F. '{print $1}'`
file_name_format=`echo $file_name | awk -F. '{print $NF}'`
file_location=`echo $1 | awk -F$file_name '{print $1}'`

file_name_prefix=`echo $file_name_main | awk -F[[:digit:]] '{print $1}'`
file_name_suffix=` echo $file_name_main | awk -F[[:alpha:][:punct:]] '{print $NF}'`
file_name_suffix_len=`echo $file_name_suffix | awk '{print length($file_name_suffix) }'`

#file_padding=`echo $file_name_suffix | awk -F[1-9] '{print $1}'`

min=$2
max=$3

mkdir $file_name_prefix
cd $file_name_prefix

while [ $min -le $3 ]
do
        file_name_suffix_mod=`echo $min | awk '{line = sprintf( "%'$file_name_suffix_len's", '$min'); print line }' | awk '{gsub(/[[:space:]]/, '0');print}'`
        echo $file_location$file_name_prefix$file_name_suffix_mod.$file_name_format >> wget.temp
        let min+=1
done

wget -i wget.temp
rm -f wget.temp
cd ..

One has to distinguish between incoming and outgoing connections. Normally, all ports of a router are open for sending data (outgoing connection).

So, in this normal case, You only have to configure the ports for incoming connections:

aMule works even with no specific ports opened, but you won't get a HighID in this case. As mentioned above, to be given a HighID, port 4662 TCP (or the one set in the Preferences) must be listening (i.e. opened in your firewall and forwarded in your router).

Apart from that port, to have an optimal ED2K experience, two more port should be enabled for listening as well: UDP ports 4672 and 4665 (that is, TCP_PORT+3) (both can be changed to any other number in the Preferences).

If you are using Kad and your router is doing NAT (Network Address Translation), you should prevent your router from remapping the port of outgoing UDP port 4672 packets. This might help if you have a high ID but Kad status is 'firewalled'.

What does each port do?

Well, since most ports can be configured to be set to any other number, the defaults will be listed. The traffic direction is from client perspective (you):

* 4661 TCP (outgoing): Port, on which a server listens for connection (defined by server).
* 4662 TCP (outgoing and incoming): Client to client transfers.
* 4665 UDP (outgoing and incoming): Used for global server searches and global source queries. This is always Client TCP port + 3
* 4672 UDP (outgoing and incoming): Extended eMule protocol, Queue Rating, File Reask Ping
* 4711 TCP: WebServer listening port.
* 4712 TCP: External Connection port. Used to communicate aMule with other applications such as aMule WebServer or aMuleCMD.