How To Install perl-autovivification on CentOS 7
Introduction
In this tutorial we learn how to install perl-autovivification on CentOS 7.
What is perl-autovivification
When an undefined variable is dereferenced, it gets silently upgraded to an array or hash reference (depending of the type of the dereferencing). This behavior is called autovivification and usually does what you mean (e.g. when you store a value) but it’s sometimes unnatural or surprising because your variables gets populated behind your back. This is especially true when several levels of dereferencing are involved, in which case all levels are vivified up to the last, or when it happens in intuitively read-only constructs like exists.
We can use yum or dnf to install perl-autovivification on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install perl-autovivification.
Install perl-autovivification on CentOS 7 Using yum
Update yum database with yum using the following command.
sudo yum makecache
After updating yum database, We can install perl-autovivification using yum by running the following command:
sudo yum -y install perl-autovivification
Install perl-autovivification on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf using the following command.
sudo dnf makecache
After updating yum database, We can install perl-autovivification using dnf by running the following command:
sudo dnf -y install perl-autovivification
How To Uninstall perl-autovivification on CentOS 7
To uninstall only the perl-autovivification package we can use the following command:
sudo dnf remove perl-autovivification
References
Summary
In this tutorial we learn how to install perl-autovivification on CentOS 7 using yum and dnf.
