echo ‘flush_all’ | nc 127.0.0.1 11211

or

echo ‘flush_all’ | netcat 127.0.0.1 11211

or

nc 127.0.0.1 11211<<<"flush_all"

admin:tot
admin:ttt
admin:true
admin:mi^8viNxvgi=yjo
admin:3bb

จะเกิด warning แบบนี้ใน nginx error log เพราะ cache ที่เราตั้งไว้มันไม่พอใช้ครับ
แก้ไขได้โดย เพิ่ม cache size ครับ

fastcgi_buffer_size 4k;
fastcgi_buffers 256 4k;

ref:
http://wiki.nginx.org/HttpFastcgiModule

เสร็จ!

apt-get install build-essential openssl libreadline6 libreadline6-dev zlib1g zlib1g-dev libssl-dev ncurses-dev libyaml-dev

wget ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p125.tar.gz
tar -zxvf ruby-1.9.3-p125.tar.gz
cd ruby-1.9.3-p125
rm -rf /tmp/ruby193
time (./configure –prefix=/usr && make && make install DESTDIR=/tmp/ruby193)

/var/lib/gems/1.8/bin/fpm -s dir -t deb -n ruby193 -v 1.9.3-p125 –description “Self-packaged Ruby 1.9.3 patch 125″ -C /tmp/ruby193 \
-p ruby193-VERSION_ARCH.deb -d “libstdc++6 (>= 4.4.3)” \
-d “libc6 (>= 2.6)” -d “libffi5 (>= 3.0.4)” -d “libgdbm3 (>= 1.8.3)” \
-d “libncurses5 (>= 5.7)” -d “libreadline6 (>= 6.1)” \
-d “libssl0.9.8 (>= 0.9.8)” -d “zlib1g (>= 1:1.2.2)” \
-d “libyaml-0-2 (>= 0.1.3)” \
usr/bin usr/lib usr/share/man usr/include

# Post installation test
apt-get remove ruby rubygems
apt-get install libffi5 libyaml-0-2
dpkg -i dpkg -i ruby193-1.9.3-p125_amd64.deb
ruby -ropenssl -rzlib -rreadline -ryaml -e “puts :success”

credit:
https://gist.github.com/futuremill/2318876

/etc/bash.bashrc

เพิ่ม

#Java Environment Variable
JAVA_HOME=/usr/lib/jvm/jdk1.7.0/
export JAVA_HOME
JRE_HOME=/usr/lib/jvm/jdk1.7.0/jre
export JRE_HOME
PATH=$PATH:$JAVA_HOME:$JRE_HOME
export PATH

ถ้าเป็น JAVA 8

#Java Environment Variable
JAVA_HOME=/usr/lib/jvm/jdk1.8.0/
export JAVA_HOME
JRE_HOME=/usr/lib/jvm/jdk1.8.0/jre
export JRE_HOME
PATH=$PATH:$JAVA_HOME:$JRE_HOME
export PATH

2013/03/27 14:48:45 [error] 7924#0: *2436 open() “/home/nginx/activity.xxx.com/htdocs/favicon.ico” failed (2: No such file or directory), client: 119.44.16.42, server: activity.xxx.com, request: “GET /favicon.ico HTTP/1.1″, host: “praew.xxx.com”
2013/03/27 14:48:48 [error] 7924#0: *2436 open() “/home/nginx/activity.xxx.com/htdocs/favicon.ico” failed (2: No such file or directory), client: 119.44.16.42, server: activity.xxx.com, request: “GET /favicon.ico HTTP/1.1″, host: “praew.xxx.com”
2013/03/27 14:48:50 [error] 7924#0: *2436 open() “/home/nginx/activity.xxx.com/htdocs/favicon.ico” failed (2: No such file or directory), client: 119.44.16.42, server: activity.xxx.com, request: “GET /favicon.ico HTTP/1.1″, host: “praew.xxx.com”

ทางแก้คือ.. บอกให้ nginx ส่งค่า 204 ไปยัง browser ครับ

nginx.conf

http {
....
...
..
.
server {
        location = /favicon.ico {
                return 204;
                access_log     off;
                log_not_found  off;
                }
        }
}

# git clone git://github.com/mattes/epeg.git
# aptitude install build-essential cdbs debhelper libjpeg62-dev automake 
# ./configure
# make 
# make install
# cp src/lib/.libs/libepeg.so* /usr/lib/

ทดสอบการใช้งาน

root@server:# time convert -resize 230 london-hq-sunny.jpg london-hq-sunny_230.jpg 

real	0m0.889s
user	0m0.336s
sys	0m0.032s

root@server:#  time epeg -w 230 -h 144 london-hq-sunny.jpg london-hq-sunny_230.jpg

real	0m0.016s
user	0m0.004s
sys	0m0.012s

เร็วสุดชีวิต!

ref:
http://superuser.com/questions/249646/fastest-jpeg-thumbnail-generator-for-linux

$ mv item_display/* ../item_display/
bash: /bin/mv: Argument list too long

แก้โดย

find /path/to/file -type f | xargs -i mv “{}” /path/to/move

หรือ

find /path/to/file -type f -name '*' -exec mv {} /path/to/move/. \;

หรือแบบยากๆเลย

http://www.linuxjournal.com/article/6060

Requirements problem
The following error must be resolved before you can continue the installation process:
register_globals is enabled. Drupal requires this configuration directive to be disabled. Your site may not be secure when register_globals is enabled. The PHP manual has instructions for how to change configuration settings. (Currently using PHP register globals Enabled (’1′))

แก้ได้ด้วยตัวเองโดยไม่ต้องบอกให้ system admin แก้ไขระบบ ด้วยการ

สร้าง php.ini ไว้ที่ root document โดยมีข้อมูลข้างใน คือ

 
[PHP]
register_globals = Off

ref :
http://drupal.org/node/216882