You may run the below command on your server to check if ImageMagick is already installed or not.
# which convert
/usr/bin/which: no convert in (/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin)
The output clearly defines it's not installed.
Installation Steps :
==============
If you have Yum installed and well configured, then you can follow the below given steps to install ImageMagick.
# yum install ImageMagick
# Total download size: 15 M
Is this ok [y/N]: y
After entering above commands it'll show the below ImageMagick installation status,
======================================
turbopanel-fc7 100% |=========================| 951 B 00:00
updates 100% |=========================| 2.3 kB 00:00
turbopanel-base 100% |=========================| 951 B 00:00
fedora 100% |=========================| 2.1 kB 00:00
Setting up Install Process
Parsing package install arguments
Resolving Dependencies
--> Running transaction check
---> Package ImageMagick.i386 0:6.3.2.9-3.fc7 set to be updated
--> Processing Dependency: liblcms.so.1 for package: ImageMagick
--> Processing Dependency: libwmflite-0.2.so.7 for package: ImageMagick
--> Processing Dependency: libgs.so.8 for package: ImageMagick
--> Processing Dependency: librsvg-2.so.2 for package: ImageMagick
--> Running transaction check
---> Package librsvg2.i386 0:2.16.1-1.fc7 set to be updated
--> Processing Dependency: libgsf-1.so.114 for package: librsvg2
--> Processing Dependency: libcroco-0.6.so.3 for package: librsvg2
--> Processing Dependency: libcroco >= 0.6.1 for package: librsvg2
--> Processing Dependency: libgsf >= 1.6.0 for package: librsvg2
---> Package libwmf.i386 0:0.2.8.4-14.fc7 set to be updated
---> Package ghostscript.i386 0:8.15.4-4.fc7 set to be updated
--> Processing Dependency: ghostscript-fonts for package: ghostscript
--> Processing Dependency: urw-fonts >= 1.1 for package: ghostscript
---> Package lcms.i386 0:1.16-3 set to be updated
--> Running transaction check
---> Package urw-fonts.noarch 0:2.4-1.fc7 set to be updated
---> Package libgsf.i386 0:1.14.3-4.fc7 set to be updated
---> Package ghostscript-fonts.noarch 0:5.50-16.fc7 set to be updated
---> Package libcroco.i386 0:0.6.1-2.1 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
================================================== ===========================
Package Arch Version Repository Size
================================================== ===========================
Installing:
ImageMagick i386 6.3.2.9-3.fc7 fedora 3.5 M
Installing for dependencies:
ghostscript i386 8.15.4-4.fc7 updates 5.9 M
ghostscript-fonts noarch 5.50-16.fc7 fedora 802 k
lcms i386 1.16-3 fedora 172 k
libcroco i386 0.6.1-2.1 fedora 127 k
libgsf i386 1.14.3-4.fc7 fedora 110 k
librsvg2 i386 2.16.1-1.fc7 fedora 179 k
libwmf i386 0.2.8.4-14.fc7 fedora 818 k
urw-fonts noarch 2.4-1.fc7 updates 3.2 M
Transaction Summary
================================================== ===========================
Install 9 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 15 M
Is this ok [y/N]: y
Downloading Packages:
(1/9): libcroco-0.6.1-2.1 100% |=========================| 127 kB 00:00
(2/9): ghostscript-fonts- 100% |=========================| 802 kB 00:00
(3/9): libgsf-1.14.3-4.fc 100% |=========================| 110 kB 00:00
(4/9): libwmf-0.2.8.4-14. 100% |=========================| 818 kB 00:00
(5/9): librsvg2-2.16.1-1. 100% |=========================| 179 kB 00:00
(6/9): ImageMagick-6.3.2. 100% |=========================| 3.5 MB 00:00
(7/9): lcms-1.16-3.i386.r 100% |=========================| 172 kB 00:00
(8/9): ghostscript-8.15.4 100% |=========================| 5.9 MB 00:00
(9/9): urw-fonts-2.4-1.fc 100% |=========================| 3.2 MB 00:00
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing: ghostscript-fonts ######################### [1/9]
Installing: urw-fonts ######################### [2/9]
Installing: ghostscript ######################### [3/9]
Installing: libcroco ######################### [4/9]
Installing: libgsf ######################### [5/9]
Installing: librsvg2 ######################### [6/9]
Installing: libwmf ######################### [7/9]
Installing: lcms ######################### [8/9]
Installing: ImageMagick ######################### [9/9]
Installed: ImageMagick.i386 0:6.3.2.9-3.fc7
Dependency Installed:
ghostscript.i386 0:8.15.4-4.fc7
ghostscript-fonts.noarch 0:5.50-16.fc7
lcms.i386 0:1.16-3 libcroco.i386 0:0.6.1-2.1
libgsf.i386 0:1.14.3-4.fc7 librsvg2.i386 0:2.16.1-1.fc7
libwmf.i386 0:0.2.8.4-14.fc7
urw-fonts.noarch 0:2.4-1.fc7
Complete!
======================================
Run the below command to check successful installation of ImageMagick.
======================================
root@server # yum list imagemagick*
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* addons: centosb2.centos.org
* base: centosh2.centos.org
* extras: centosb2.centos.org
* updates: centosh2.centos.org
addons | 951 B 00:00
base | 2.1 kB 00:00
extras | 2.1 kB 00:00
updates | 1.9 kB 00:00
Excluding Packages in global exclude list
Finished
Available Packages
ImageMagick.i386 6.2.8.0-4.el5_1.1 base
ImageMagick-c++.i386 6.2.8.0-4.el5_1.1 base
ImageMagick-c++-devel.i386 6.2.8.0-4.el5_1.1 base
ImageMagick-devel.i386 6.2.8.0-4.el5_1.1 base
ImageMagick-perl.i386 6.2.8.0-4.el5_1.1 base
======================================
If you do not have Yum insatlled on your server, then you can follow below given steps to install ImageMagick.
======================================
Download ImageMagick :
root@server # wget
ftp://ftp.imagemagick.org/pub/ImageM...eMagick.tar.gz
Enter into ImageMagick directory :
root@server # cd ImageMagick-6.6.1
Compile ImageMagick :
root@server # ./configure
root@server # make
Once finished with compilation start to install with following command. You must have Administrator privileges for this.
root@server # sudo make install
Done !
======================================
Run the below command to check the installtion.
======================================
root@server # /usr/local/bin/convert --version
Version: ImageMagick 6.6.1-4 2010-04-23 Q16
http://www.imagemagick.org
Copyright: Copyright (C) 1999-2010 ImageMagick Studio LLC
Features: OpenMP
======================================
Done ! 
You are ready to use ImageMagick to convert, compose, or edit images.
ImageMagick Installation (manually and with Yum)
Linear Mode
