And another way. Where mod_list contains a list of modules to check for. 
#!/bin/bash

export FTP_PASSIVE=1

cat mod_list |
while read module
do
    perl -M$module -e exit 2> /dev/null || {
        echo "Missing $module"
        perl -MCPAN -e "install $module"
    }   
done

[download]

In reply to Re: Checking and installing a perl module by mhearse
in thread Checking and installing a perl module by Anonymous Monk

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