hrk's blog

Mac OSXにhomebrewでmysqlをインストール

どうもrootのパスワードが設定できなくて、2回ぐらいuninstallしましたが、
テーブル定義？(/usr/local/var/mysql/)がのこっていたので、うまくいかず、
まっさらな状態にするとインストールできました

$ brew uninstall mysql
$ rm -r /usr/local/var/mysql

インストール
$ brew install mysql

==> Downloading http://mysql.mirrors.pair.com/Downloads/MySQL-5.1/mysql-5.1.54.tar.gz
[省略]
==> Caveats
Set up databases with:
unset TMPDIR
mysql_install_db

If this is your first install, automatically load on login with:
cp /usr/local/Cellar/mysql/5.1.54/com.mysql.mysqld.plist ~/Library/LaunchAgents
launchctl load -w ~/Library/LaunchAgents/com.mysql.mysqld.plist

If this is an upgrade and you already have the com.mysql.mysqld.plist loaded:
launchctl unload -w ~/Library/LaunchAgents/com.mysql.mysqld.plist
cp /usr/local/Cellar/mysql/5.1.54/com.mysql.mysqld.plist ~/Library/LaunchAgents
launchctl load -w ~/Library/LaunchAgents/com.mysql.mysqld.plist

Note on upgrading:
We overwrite any existing com.mysql.mysqld.plist in ~/Library/LaunchAgents
if we are upgrading because previous versions of this brew created the
plist with a version specific program argument.

Or start manually with:
mysql.server start
==> Summary
/usr/local/Cellar/mysql/5.1.54: 220 files, 45M, built in 8.2 minutes

ひとまずインストール完了

上記のコマンドをそのままやっても良いが、
自動的に起動してほしくないので、
セットアップのみ実行

$ mysql_install_db
$ mysql.server start
$ /usr/local/Cellar/mysql/5.1.54/bin/mysql_secure_installation

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!

In order to log into MySQL to secure it, we'll need the current
password for the root user. If you've just installed MySQL, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.

[ルートのパスワード設定しますか？]
Set root password? [Y/n] Y
New password:
Re-enter new password:
Password updated successfully!
Reloading privilege tables..
... Success!

By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL without having to have a user account created for
them. This is intended only for testing, and to make the installation
go a bit smoother. You should remove them before moving into a
production environment.

[ルート以外のユーザは削除する？]
Remove anonymous users? [Y/n] n
... skipping.

Normally, root should only be allowed to connect from 'localhost'. This
ensures that someone cannot guess at the root password from the network.

[リモートからルートのログインする？]
Disallow root login remotely? [Y/n] Y
... Success!

By default, MySQL comes with a database named 'test' that anyone can
access. This is also intended only for testing, and should be removed
before moving into a production environment.

[テスト用のデータベースは削除する？]
Remove test database and access to it? [Y/n] n
... skipping.

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

[今すぐ設定を反映させる？]
Reload privilege tables now? [Y/n] Y
... Success!

Cleaning up...

All done! If you've completed all of the above steps, your MySQL
installation should now be secure.

Thanks for using MySQL!

Mac OSX 起動時に実行するアプリケーションの設定方法

Windowsで言うとこのスタートアップ

システム環境設定
↓
アカウント
↓
ログイン項目
↓
"＋"を押して追加

memcached の中身を見る

memcachedに接続する方法

$ telnet localhost 11211
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.

statでいろいろな情報を表示（よくわからない・・・。）

$ stat
STAT pid 7692
STAT uptime 19177
STAT time 1297328806
STAT version 1.2.6
STAT pointer_size 32
STAT rusage_user 0.017997
STAT rusage_system 0.058991
STAT curr_items 83
STAT total_items 163
STAT bytes 21606
STAT curr_connections 5
STAT total_connections 500
STAT connection_structures 9
STAT cmd_get 406
STAT cmd_set 163
STAT get_hits 234
STAT get_misses 172
STAT evictions 0
STAT bytes_read 46646
STAT bytes_written 23103
STAT limit_maxbytes 67108864
STAT threads 4
END

コマンド形式は
[]\r\n

取得は
# get hoge
VALUE hoge 0 3
var

設定は
# set hoge 0 5 3
# var
STORED

ちなみに、こっちでも表示することが可能

$ memcached-tool localhost dump

FireMobileSimulatorを楽に使う方法

vimperator
https://github.com/zentooo/rc/blob/master/.vimperator/plugin/fms_switcher.js


FireGestures
 * fire mobile simulator OFF
    firemobilesimulator.core.resetDevice();
 * ある端末を設定(リストの順番)
    firemobilesimulator.core.setDevice(1);

make test で Test::mysqld を永続化させる方法

http://blog.livedoor.jp/xaicron/archives/51188199.html

勉強

Perlの文字列比較のテストを少し楽にする方法

テストは何のためにあるのかという話もありますが、
テストを動かしながら正しく通るテスト結果をよくつるく今日この頃ですが。。。

今までのやり方だと


 my $text = <<'...'; Test string text ... my $expects = <<'...'; test string word ...  is $text => $expects, 'test func is';
#   Failed test 'test func is'
#   at test_differences.pl line 33.
#          got: 'Test
# string
# text
# '
#     expected: 'test
# string
# word
# '

そしてTest::Differencesを使うとこんな感じに


 eq_or_diff $text => $expects, 'table diff';
#   Failed test 'table diff'
#   at test_differences.pl line 34.
# +---+--------+----------+
# | Ln|Got     |Expected  |
# +---+--------+----------+
# *  1|Test    |test      *
# |  2|string  |string    |
# *  3|text    |word      *
# +---+--------+----------+

どこに差分があるのか分かりやすい。ただ改行入ってないと意味ないけどね。

Perlの文字列をバイナリにして確認したい時

文字列=>バイナリ
print unpack("H*", "AB"); # 4142
バイナリ=>文字列
print pack("H*", "4142"); # AB