Linux_Easy Publish

Author: Leerais Page views: 891 DT: 07/06/08 10:36

06Jul

1、编译Subversion遇到的问题

configure: error: APR-UTIL was installed independently, it wont be
possible to use the specified Berkeley DB: /usr/local/BerkeleyDB.4.4

网上的说法很多，费劲一番周折还是没有解决，最终解决办法，使用SVN自带的依赖包，即同时下载这两个文件：

-rw-r--r-- 1 leerais leerais 6604640 2008-07-05 18:20 subversion-1.5.0.tar.gz
-rw-r--r-- 1 leerais leerais 3257964 2008-07-05 19:11 subversion-deps-1.5.0.tar.gz

然后解压到一块就行了，至于编译选项，就不要舍近而求远了，不用指定 arp、arp-util等选项，直接编译就行。屡试不爽啊！

SVN源文件链接：http://subversion.tigris.org/servlets/ProjectDocumentList?folderID=260&expandFolder=74

2、MySQL远程连接遇到的问题

leerais@debian:~$ mysql -h 192.168.2.2 -u leerais -p
Enter password:
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 0

具体原因我没找着，知其然而不知其所以然，解决办法是在你的MySQL配置文件，一般是 /etc/my.cnf 里面加入下面这一行：

skip-name-resolve

以下是我的部分配置文件：

# The MySQL server
[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-locking
skip-name-resolve
key_buffer = 16M
max_allowed_packet = 1M
table_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M

Author: Leerais Page views: 906 DT: 04/12/08 16:48

12Apr

Q. I am using vim under Ubuntu Linux and whenever I type following command:

syntax on

I’m getting an error which read as follows:

E319: Sorry, the command is not available in this version: syntax on

How do I fix this problem?

A. Vim is a text editor that is upwards compatible to Vi. It can be used to edit all kinds of plain text. It is especially useful for editing programs.

There are a lot of enhancements above Vi: multi level undo, multi windows and buffers, syntax highlighting, command line editing, filename completion, on-line help, visual selection, etc

Ubuntu Linux comes with tiny version of vim.

All you need to do is installed full vim version by typing following command:

$ sudo apt-get install vim

You can add syntax on command to ~/.vimrc file

原文参考：http://www.cyberciti.biz/faq/howto-install-full-vim-under-ubuntu-linux/

Author: Leerais Page views: 774 DT: 04/12/08 10:08

12Apr

或许今年真的有些不顺……连安装下MySQL都给我出问题……

root@localhost:/usr/local/mysql# scripts/mysql_install_db --user=mysql
Installing MySQL system tables...
ERROR: 1062 Duplicate entry 'localhost-' for key 1
080411 14:38:09 [ERROR] Aborting

080411 14:38:09 [Note] ./bin/mysqld: Shutdown complete

Installation of system tables failed!

查看下 scripts/mysql_install_db 脚本，发现安装时调用的建立系统表的SQL文件是下面这个：share/mysql_system_tables_data.sql

-- Fill "users" table with default users allowing root access
-- from local machine if "users" table didn't exist before
CREATE TEMPORARY TABLE tmp_user LIKE user;
INSERT INTO tmp_user VALUES ('localhost','root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y'
,'Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0);
REPLACE INTO tmp_user VALUES (@@hostname,'root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y'
,'Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0);
REPLACE INTO tmp_user VALUES ('127.0.0.1','root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y
','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0);
INSERT INTO tmp_user (host,user) VALUES ('localhost','');
INSERT INTO tmp_user (host,user) VALUES (@@hostname,');
INSERT INTO user SELECT * FROM tmp_user WHERE @had_user_table=0;
DROP TABLE tmp_user;

这下找到问题所在了，我的系统主机名默认 localhost，应此插入时导致重复。
解决办法：
1、更改主机名
2、修改上面这段SQL脚本

INSERT INTO tmp_user (host,user) VALUES (@@hostname,'');

更改为：

REPLACE INTO tmp_user (host,user) VALUES (@@hostname,'');

OK ……

Author: Leerais Page views: 1328 DT: 04/10/08 10:17

10Apr

选择越多，麻烦也就越多。这是用LINUX最不爽的地方。

想要在LINUX上看中文，安装相应的语言包就够了，问题是我不用LINUX做桌面，况且Console下也没法看中文，除非又来个第三方的东东，譬如zhcon……

想要输入中文，修改环境变量中的 LC_CTYPE就够了，用不着搞那么复杂，可Debian的配置文件东一个西一个，搞得我好乱啊……

针对Etch版本，按照优先级，相应的locale配置文件：

~/.bash_profile
/etc/default/locale
/etc/enviroment

Author: Leerais Page views: 851 DT: 04/09/08 10:49

09Apr

每次开机，Debian总是默认关掉小键盘，当然还有CapsLock，ScrollLock等。内置命令中有这么个，setleds，但是作用只是瞬时性的，永久性的点亮就必须修改配置文件了。

vim /etc/console-tools/config

#
# This files tells the console-tools package:
#
# - whether to load a specific font and boot (and maybe a screen-font map,
# but you should avoid that if possible).
# - whether to setup an Application-Charset Map other than the default CP437.
# - whether to start "vcstime" to have time on all text VC'S.
#
# You can also specify per-VC settings by suffixing variable names as in
# the examples below. This only works on framebuffer devices.
#
# CAVEATS:
#
# - When using the new framebuffer devices, the "global setting" for a font
# only affects the current console (ie., at boot-time, the first one)
# - ACM setting involves 2 steps (maybe loading a user ACM, and activating
# it on a given charset slot - see charset(1) for details), the 1st of which
# affects the entire system, but the 2nd of which only affects the current
# VC (ie., at boot-time, the first one).  So that if you want to use the same
# ACM on all VCs, you have to specify "APP_CHARSET_MAP_vc<N>=user" for all
# relevant values of <N>.
#
# Example:
#
#SCREEN_FONT=iso01.f16
#SCREEN_FONT_vc2=LatArCyrHeb-16
#
#APP_CHARSET_MAP=iso05
#APP_CHARSET_MAP_vc2=user
#
# Set the following - more euro-friendly default than kernel font.
# SCREEN_FONT=latcyrheb-sun16.psf

#DO_VCSTIME=yes
#
# Forget this one unless you _know_ it is necessary for your font:
#SCREEN_FONT_MAP=iso01

#  **** screen saver/DPMS settings: all VCs ****
# These settings are commented by default to avoid the chance of damage to
# very old monitors that don't support DPMS signalling.

# screen blanking timeout.  monitor remains on, but the screen is cleared to
# range: 0-60 min (0==never)  kernels I've looked at default to 10 minutes.
# (see linux/drivers/char/console.c)
BLANK_TIME=30

# blanking method (VESA DPMS mode to use after BLANK_TIME, before powerdown):
# on: the default, no DPMS signalling. near instant powerup, no power saving
# vsync: DPMS Standby mode. nearly instant recovery, uses 110/120W (17" screen)
# hsync: DPMS Suspend mode. typically 3s recovery, uses 15/120W (17" screen)
# powerdown,off: DPMS Off mode, typ. 10s recovery, uses  5/120W (17" screen)

# Those values are for my 17" Mag, but some monitors do suspend the same as
# standby.  xset dpms force {off|standby|suspend|on} is useful for this, if X
# supports DPMS on your video card.  Set X's DPMS screensaver with xset dpms
# or use option power_saver in XF86Config
#
# DPMS set by default to on, because hsync can cause problems on certain
# hardware, such as Armada E500 laptops
BLANK_DPMS=off

# Powerdown time.  The console will go to DPMS Off mode POWERDOWN_TIME
# minutes _after_ blanking.  (POWERDOWN_TIME + BLANK_TIME after the last input)
POWERDOWN_TIME=30

# rate and delay can get only specific values, consult kbdrate(1) for help
#KEYBOARD_RATE="30"
#KEYBOARD_DELAY="250"

# Turn on numlock by default
LEDS=+num

看到最后一行了吧？当然，你还可以加上适当的参数来点亮CapsLock，ScrollLock。如果就这么点亮了，你运气够好，不行的话，接着看下面。

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