interactive mode cpan. "cpan" doesn't work. "perl -MCPAN -e shell" does

Jeri has asked for the wisdom of the Perl Monks concerning the following question:

Hi, I recently deleted a local perl and cpan version on my server. (I wanted everyone to be using the same perl and cpan.) After I did that I started having a problem where if I type

 ionadmin@ion-torrent-server:/usr/share$ cpan
-bash: /usr/local/bin/cpan: No such file or directory
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This makes since, since I just deleted it, but why isn't it finding the system cpan? (/usr/bin/cpan) What's strange to me is if I type

 ionadmin@ion-torrent-server:/usr/share$ perl -MCPAN -e shell
Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v2.00)
Enter 'h' for help.

cpan[1]> exit
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it works just fine. How can I access the interactive mode by typing just "cpan"? How can I get cpan to locate itself at /usr/bin/cpan?

 ionadmin@ion-torrent-server:/usr/bin$ echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/game
+s
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Re: interactive mode cpan. "cpan" doesn't work. "perl -MCPAN -e shell" does by Anonymous Monk on Feb 12, 2014 at 18:40 UTC
What? Its simple, delete the existing cpan file, and re-install CPAN	[reply]
Re^2: interactive mode cpan. "cpan" doesn't work. "perl -MCPAN -e shell" does by Jeri (Scribe) on Feb 12, 2014 at 20:51 UTC
haha really?	[reply]
Re^3: interactive mode cpan. "cpan" doesn't work. "perl -MCPAN -e shell" does by Jeri (Scribe) on Feb 12, 2014 at 21:05 UTC
Thanks, sorry. It seemed complicated. Need to take a break.	[reply]
Re^4: interactive mode cpan. "cpan" doesn't work. "perl -MCPAN -e shell" does by Anonymous Monk on Feb 13, 2014 at 01:08 UTC