Error statement

I was building a ruby environment with reference to the following site ... https://qiita.com/naoki_mochizuki/items/814e0979217b1a25aa3e

[naoki] sudo yum install \ #install yum
git make gcc-c++ patch \ #c and c++Compiler, git diff changed to patch file
openssl-devel \ 
libyaml-devel libffi-devel libicu-devel \
libxml2 libxslt libxml2-devel libxslt-devel \
zlib-devel readline-devel \
mysql mysql-server mysql-devel \
ImageMagick ImageMagick-devel \
epel-release

Various errors occur

-bash: openssl-deve:Command not found
-bash: libxml2:Command not found
* The error statement has disappeared, but the same error occurs with git.

Solution

I was completely misread. When executing the specified command, you must prefix it with sudo yum install as shown below. Now everything has passed the command. It took me a while to notice ...

【sudo yum install】　＋　【git make gcc-c++ patch】

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