How To Install perl-constant.noarch on Amazon Linux 2
Introduction
In this tutorial we learn how to install perl-constant.noarch on Amazon Linux 2.
What is perl-constant.noarch
This pragma allows you to declare constants at compile-time use constant PI => 4 * atan2(1, 1); When you declare a constant such as “PI” using the method shown above, each machine your script runs upon can have as many digits of accuracy as it can use. Also, your program will be easier to read, more likely to be maintained (and maintained correctly), and far less likely to send a space probe to the wrong planet because nobody noticed the one equation in which you wrote 3.14195. When a constant is used in an expression, Perl replaces it with its value at compile time, and may then optimize the expression further. In particular, any code in an “if (CONSTANT)” block will be optimized away if the constant is false.
We can use yum to install perl-constant.noarch on Amazon Linux 2. In this tutorial we discuss both methods but you only need to choose one of method to install perl-constant.noarch.
Install perl-constant.noarch on Amazon Linux 2 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
After updating yum database, We can install perl-constant.noarch using yum by running the following command:
sudo yum -y install perl-constant.noarch
How To Uninstall perl-constant.noarch on Amazon Linux 2
To uninstall only the perl-constant.noarch package we can use the following command:
sudo yum remove perl-constant.noarch
perl-constant.noarch Package Contents on Amazon Linux 2
/usr/share/doc/perl-constant-1.27
/usr/share/doc/perl-constant-1.27/Changes
/usr/share/doc/perl-constant-1.27/README
/usr/share/doc/perl-constant-1.27/eg
/usr/share/doc/perl-constant-1.27/eg/synopsis.pl
/usr/share/man/man3/constant.3pm.gz
/usr/share/perl5/vendor_perl/constant.pm
References
Summary
In this tutorial we learn how to install perl-constant.noarch on Amazon Linux 2 using yum.