[Perl]install DateTime module

 

To install the DateTime module in Perl, you have a few options depending on your system setup. I’ll outline the most reliable and professional methods, starting from the most standard approach.

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1. Using CPAN (Perl’s built-in module manager)

This is the canonical method. Run the following command in your shell:

perl -MCPAN -e 'install DateTime'

If you haven’t configured CPAN before, it will walk you through an initial setup (you can accept defaults if unsure).

After installation, test it with:

perl -MDateTime -e 'print DateTime->now, "\n";'

If it prints a timestamp, it’s installed correctly.

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2. Using cpanm (Recommended for developers)

If you have or can install App::cpanminus, this is a cleaner and faster method:

cpanm DateTime

If cpanm is not yet installed, install it first:

perl -MCPAN -e 'install App::cpanminus'

Then repeat:

cpanm DateTime

This approach is script-friendly and avoids the verbose CPAN shell.

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3. Using your system package manager (less flexible)

If you’re on FreeBSD, Debian, or Red Hat, you can often install DateTime through system packages:

• FreeBSD:

  pkg install p5-DateTime
  

• Debian/Ubuntu:

  sudo apt install libdatetime-perl
  

• Red Hat/CentOS/Fedora:

  sudo dnf install perl-DateTime
  

However, this version may lag behind CPAN.

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4. Manual Installation (only if all else fails)

You can fetch it manually:

wget https://cpan.metacpan.org/authors/id/D/DR/DROLSKY/DateTime-*.tar.gz
tar xzf DateTime-*.tar.gz
cd DateTime-*
perl Makefile.PL
make
make test
sudo make install

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⚙️ Dependencies

DateTime depends on:

• DateTime::Locale

• DateTime::TimeZone

• Params::Validate

cpanm or CPAN will handle these automatically.

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Would you like me to show you how to bundle it locally (e.g., without root privileges, for a custom Perl environment)? That’s often necessary on shared or restricted systems.