yum install ImageMagick #注意大写
Dependencies Resolved

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 Package                            Arch                         Version                                 Repository                  Size
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Installing:
 ImageMagick                        x86_64                       6.7.8.9-18.el7                          base                       2.1 M
Installing for dependencies:
 OpenEXR-libs                       x86_64                       1.7.1-7.el7                             base                       217 k
 ilmbase                            x86_64                       1.0.3-7.el7                             base                       100 k
 libwmf-lite                        x86_64                       0.2.8.4-41.el7_1                        base                        66 k

Transaction Summary
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Install  1 Package (+3 Dependent packages)

Total download size: 2.5 M
Installed size: 9.1 M
Is this ok [y/d/N]: