The Parrot Virtual File System
Parrot is a tool for attaching existing programs to remote I/O systems through the filesystem interface. For example, here's how to use Parrot with vi in order to edit a file on a remote file server:% parrot_run vi /chirp/server.nd.edu/mydata
Parrot "speaks" a variety of remote I/O services include HTTP, FTP,
GridFTP, iRODS, HDFS, XRootD, GROW, and Chirp on behalf of ordinary programs.
It works by trapping a program's system calls through
the ptrace debugging interface, and replacing
them with remote I/O operations as desired.
Parrot can be installed and operated by any user without
special privileges or kernel changes and can be applied to
almost any program without re-writing, re-linking, or re-installing.
Parrot is particularly useful for running batch jobs in large
scale distributed systems.
Parrot is currently only available on the Linux operating system.
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