gnu: Add rename.

* gnu/packages/admin.scm (rename): New public variable.

gnu/packages/admin.scm

@@ -18,6 +18,7 @@
 ;;; Copyright © 2017 Ben Sturmfels <ben@sturm.com.au>
 ;;; Copyright © 2017 Ethan R. Jones <doubleplusgood23@gmail.com>
 ;;; Copyright © 2017 Christopher Allan Webber <cwebber@dustycloud.org>
+;;; Copyright © 2017 Marius Bakke <mbakke@fastmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -42,6 +43,7 @@
   #:use-module (guix git-download)
   #:use-module (guix build-system cmake)
   #:use-module (guix build-system gnu)
+  #:use-module (guix build-system perl)
   #:use-module (guix build-system python)
   #:use-module (guix build-system trivial)
   #:use-module (gnu packages)
@@ -756,6 +758,31 @@ console window to allow commands to be interactively run on multiple servers
 over ssh connections.")
     (license license:gpl2+)))
 
+(define-public rename
+  (package
+    (name "rename")
+    (version "0.20")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "mirror://cpan/authors/id/R/RM/RMBARKER/File-Rename-"
+                    version ".tar.gz"))
+              (sha256
+               (base32
+                "1cf6xx2hiy1xalp35fh8g73j67r0w0g66jpcbc6971x9jbm7bvjy"))))
+    (build-system perl-build-system)
+    (native-inputs
+     `(("perl-module-build" ,perl-module-build)
+       ("perl-test-pod" ,perl-test-pod)
+       ("perl-test-pod-coverage" ,perl-test-pod-coverage)))
+    (home-page "https://metacpan.org/pod/distribution/File-Rename/rename.PL")
+    (synopsis "Perl extension for renaming multiple files")
+    (description
+     "This package provides a Perl interface (@code{Perl::Rename}) as well
+as a command-line utility (@command{rename}) that can rename multiple files
+at once based on a Perl regular expression.")
+    (license license:perl-license)))
+
 (define-public rottlog
   (package
     (name "rottlog")