steven@server:/var/www$ sudo pecl install imagick
downloading imagick-2.3.0.tgz ...
Starting to download imagick-2.3.0.tgz (86,976 bytes)
.....................done: 86,976 bytes
12 source files, building
running: phpize
Configuring for:
PHP Api Version:         20041225
Zend Module Api No:      20060613
Zend Extension Api No:   220060519
Please provide the prefix of Imagemagick installation [autodetect] :
building in /var/tmp/pear-build-root/imagick-2.3.0
running: /tmp/pear/temp/imagick/configure --with-imagick
*** ... snip ... ***
checking ImageMagick MagickWand API configuration program... configure: error: not found. Please provide a path to MagickWand-config or Wand-config program.
ERROR: `/tmp/pear/temp/imagick/configure --with-imagick‘ failed

 need below command.

sudo apt-get install libmagickwand-dev libmagickcore-dev

/etc/init.d/apache2 restart

pecl install imagick