# convert -sample 500x500! 512.png 500.png #把512*512的图片修改为500*500的图片 # which convert /usr/bin/convert # rpm -qf /usr/bin/convert ImageMagick-6.7.8.9-15.el7_2.x86_64 # yum search ImageMagick Loaded plugins: fastestmirror, langpacks Determining fastest mirrors * base: mirrors.tuna.tsinghua.edu.cn * epel: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirror.vodien.com =========================== N/S matched: ImageMagick =========================== ImageMagick-c++.i686 : ImageMagick Magick++ library (C++ bindings) ImageMagick-c++.x86_64 : ImageMagick Magick++ library (C++ bindings) ImageMagick-c++-devel.i686 : C++ bindings for the ImageMagick library ImageMagick-c++-devel.x86_64 : C++ bindings for the ImageMagick library ImageMagick-devel.i686 : Library links and header files for ImageMagick app : development ImageMagick-devel.x86_64 : Library links and header files for ImageMagick app : development ImageMagick-doc.x86_64 : ImageMagick html documentation ImageMagick-perl.x86_64 : ImageMagick perl bindings GraphicsMagick.i686 : An ImageMagick fork, offering faster image generation and : better quality GraphicsMagick.x86_64 : An ImageMagick fork, offering faster image generation : and better quality ImageMagick.i686 : An X application for displaying and manipulating images ImageMagick.x86_64 : An X application for displaying and manipulating images php-magickwand.x86_64 : PHP API for ImageMagick php-pecl-imagick.x86_64 : Provides a wrapper to the ImageMagick library Name and summary matches only, use "search all" for everything.