[Ruby] Día 2

1 files changed, 17 insertions, 0 deletions

diff --git a/ruby/grep.rb b/ruby/grep.rb
new file mode 100755
index 0000000..61d60b0
--- /dev/null
+++ b/ruby/grep.rb
@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+
+exit 1 if ARGV.size < 2
+
+pattern = ARGV[0]
+
+ARGV[1..-1].each do |fname|
+	unless File.file?(fname)
+		puts "File #{fname} does not exist or is a directory"
+		exit 1
+	end
+	File.open(fname, 'r') do |f|
+		f.each_line do |line|
+			puts "#{f.lineno}:\t#{line}" if line =~ /#{pattern}/
+		end
+	end
+end