CentOS Linux is a free and open source operating system that is functionally compatible with its upstream source, Red Hat Enterprise Linux (RHEL). CentOS conforms fully with the upstream vendor's redistribution policy and aims to be 100% binary compatible. It aims to provide enterprise-class capabilities on community-supported infrastructure.
A Ruby Gem is a package that contains code and executables. A Ruby Gem package allows developers to bundle up the code into a single package that can be installed through one process. Gem is great for shell scripting, system administration, and application scripting. You can easily open a local or remote file on the command line. gem goes beyond simply splitting lines of files; it does word splitting too. And you can check to see if two words are in the same group made of delimited words.
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