function centos7 {
  release=`cat /etc/redhat-release|awk '{print $4}'|grep ^[7]`

  if [ "$release" != "" ]; then
     centos7='yes'
  fi

}

centos7

echo "$centos7"



We create a function called "centos7" and then call it by just typing "centos7"

We then access a variable that may be set if we are running centos7 which is also called "$centos7".

If the value is present it should be = "yes" which means we are running Centos 7.

bash, scripting, functionfunction, centos, etc, redhat, awk, grep, quot, fi, echo, typing, variable,

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