For those familiar with entrez direct commands, I'm wondering how I can use commands like efetch, esearch, elink to get the necessary information from local databases. For example, here is a piece of code that I would like to do locally:

system("esearch -db protein -query $inputGI | elink -target nuccore | efetch | xtract);

the databases are downloaded locally, and I am aware of the SearchIO on Bioperl but I am very unsure how I can use that to extract the information I need.