Merge pull request #760 from uberhacker/add-cron-package

Add cron package

packages/cron.rb

+require 'package'
+
+class Cron < Package
+  description 'Job scheduler - Background-only application which launches and runs other applications, or opens documents, at specified dates and times.'
+  homepage 'https://directory.fsf.org/wiki/Cron'
+  version '3.0pl1-128'
+  source_url 'http://cdn-fastly.deb.debian.org/debian/pool/main/c/cron/cron_3.0pl1.orig.tar.gz'
+  source_sha1 'f8d00de4c7c0eae97bedb4a3ec10ea21d43ece84'
+
+  depends_on 'patch'
+  depends_on 'vim'
+
+  def self.patch
+    system "wget http://cdn-fastly.deb.debian.org/debian/pool/main/c/cron/cron_3.0pl1-128.diff.gz"
+    abort "Checksum mismatch. :/ Try again.".lightred unless Digest::SHA1.hexdigest( File.read("cron_3.0pl1-128.diff.gz") ) == "6b5c00d9dc79d05525f9f1bd76dbdbe4c540dc14"
+    system "gunzip cron_3.0pl1-128.diff.gz"
+    system "patch -p1 < cron_3.0pl1-128.diff"
+  end
+
+  def self.build
+    self.patch
+    system "make"
+  end
+
+  def self.install
+    system "sudo mkdir -p /var/spool/cron/crontabs"
+    system "sudo chgrp -R $(whoami) /var/spool/cron"
+    system "sudo chmod -R g+w /var/spool/cron"
+    system "mkdir -p #{CREW_DEST_DIR}/usr/local/bin"
+    system "mkdir -p #{CREW_DEST_DIR}/usr/local/man/man1"
+    system "mkdir -p #{CREW_DEST_DIR}/usr/local/man/man5"
+    system "mkdir -p #{CREW_DEST_DIR}/usr/local/man/man8"
+    system "mkdir -p #{CREW_DEST_DIR}/var/spool/cron/crontabs"
+    system "cp cron #{CREW_DEST_DIR}/usr/local/bin"
+    system "cp crontab #{CREW_DEST_DIR}/usr/local/bin"
+    system "cp crontab.1 #{CREW_DEST_DIR}/usr/local/man/man1"
+    system "cp crontab.5 #{CREW_DEST_DIR}/usr/local/man/man5"
+    system "cp cron.8 #{CREW_DEST_DIR}/usr/local/man/man8"
+    system "touch #{CREW_DEST_DIR}/var/spool/cron/crontabs/$(whoami)"
+    puts ""
+    puts "To start cron, execute: sudo cron".lightblue
+    puts ""
+    puts "In order to edit with crontab, you must assign the EDITOR environment variable:".lightblue
+    puts "echo 'export EDITOR=/usr/local/bin/vim' >> ~/.bashrc && source ~/.bashrc".lightblue
+    puts ""
+  end
+end