I need some help with my ruby script. I have code like this:
#!/usr/bin/ruby
require 'rubygems'
require 'json'
require 'date'
system 'curl https://xxx/yyy/zzz --cacert xxx.pem --cert xxx.pem --key xxx.pem >> hosts.txt'
document = JSON.load File.new("hosts.txt")
file = JSON.load File.new("admins.txt")
new_file = File.open("newfile.txt", "w")
personal_data = file['admins'].group_by { |e| e.delete('name') }
dupa = []
document['results'].map do |h|
dupa << h.merge(personal_data[h['name']].first) if personal_data[h['name']]
end
#puts dupa
dupa.each do |a|
if a["global_status_label"] != "OK"
last_report = a["last_report"].to_s
last_report = last_report[0..9]
date_last_report = Date.parse last_report
current_Date = Date.today
difference_dates = (current_Date - date_last_report).to_i
if difference_dates > 5
new_file.puts "#{a['name']}\t #{difference_dates}"
end
end
end
new_file.close
Everything works fine, but I need to send mail with some informations using only shell command mailx/mail. I know how to execute shell commands in Ruby and if I wanted to send only a mail it would not be a problem, but doing thay way I have to create new file with data new_file.puts "#{a['name']}\t #{difference_dates}" and then send this in email. Is there any possibility to put data like a['name'] or difference_dates or anything elese to the text of email? I think abou something like that:
system 'echo "Your server a['name'] is not responding since difference_dates, fix it!" |mailx -s "Warning" anything#anything.com'
is it possible and correct?
Related
I have done a program that sends requests to a url and saves them in a file. The program is this, and is working perfectly:
require 'open-uri'
n = gets.to_i
out = gets.chomp
output = File.open( out, "w" )
for i in 1..n
response = open('http://slowapi.com/delay/10').read
output << (response +"\n")
puts response
end
output.close
I want to modify it so that I can execute it from command line. I must run it like this:
fle --test abc -n 300 -f output
What must I do?
Something like this should do the trick:
#!/usr/bin/env ruby
require 'open-uri'
require 'optparse'
# Prepare the parser
options = {}
oparser = OptionParser.new do |opts|
opts.banner = "Usage: fle [options]"
opts.on('-t', '--test [STRING]', 'Test string') { |v| options[:test] = v }
opts.on('-n', '--count COUNT', 'Number of times to send request') { |v| options[:count] = v.to_i }
opts.on('-f', '--file FILE', 'Output file', :REQUIRED) { |v| options[:out_file] = v }
end
# Parse our options
oparser.parse! ARGV
# Check if required options have been filled, print help and exit otherwise.
if options[:count].nil? || options[:out_file].nil?
$stderr.puts oparser.help
exit 1
end
File::open(options[:out_file], 'w') do |output|
options[:count].times do
response = open('http://slowapi.com/delay/10').read
output.puts response # Puts the response into the file
puts response # Puts the response to $stdout
end
end
Here's a more idiomatic way of writing your code:
require 'open-uri'
n = gets.to_i
out = gets.chomp
File.open(out, 'w') do |fo|
n.times do
response = open('http://slowapi.com/delay/10').read
fo.puts response
puts response
end
end
This uses File.open with a block, which allows Ruby to close the file once the block exits. It's a much better practice than assigning the file handle to a variable and use that to close the file later.
How to handle passing in variables from the command-line as options is handled in the other answers.
The first step would be to save you program in a file, add #!/usr/bin/env ruby at the top and chmod +x yourfilename to be able to execute your file.
Now you are able to run your script from the command line.
Secondly, you need to modify your script a little bit to pick up command line arguments. In Ruby, the command line arguments are stored inside ARGV, so something like
ARGV.each do|a|
puts "Argument: #{a}"
end
allows you to retrieve command line arguments.
So I have found this RUBY script, which looks for all PNG images in sub folders and folders and converts PNG images using TinyPNG API but for some reason I get runtime error
C:/Users/Vygantas/Desktop/tinypng.rb:14:in `':
Usage: ./tinypng.rb C:/Users/Vygantas/Desktop/product C:/Users/Vygantas/Desktop/product(RuntimeError)
#!/usr/bin/ruby -w
#
# tinypng.rb — Placed into the public domain by Daniel Reese.
#
require 'rubygems'
require 'json'
# Set API key.
apikey = "xxxxxxxxxxxxxxxx"
# Verify arguments.
ARGV.length == 2 or fail("Usage: ./tinypng.rb C:\Users\Vygantas\Desktop\product C:\Users\Vygantas\Desktop\product*emphasized text*")
src = ARGV[0]
dst = ARGV[1]
File.exist?(src) or fail("Input folder does not exist: " + src)
File.exist?(dst) or fail("Output folder does not exist: " + dst)
# Optimize each image in the source folder.
Dir.chdir(src)
Dir.glob('*.png') do |png_file|
puts "\nOptimizing #{png_file}"
# Optimize and deflate both images.
cmd = "curl -u api:#{apikey} --data-binary ##{png_file} 'https://api.tinypng.com/shrink'"
puts cmd
r = JSON.parse `#{cmd}`
if r['error']
puts "TinyPNG Error: #{r['message']} (#{r['error']})"
exit(1)
end
url = r['output']['url']
cmd = "curl '#{url}' -o #{dst}/#{png_file}"
puts cmd
`#{cmd}`
end
Dir.chdir("..")
puts 'Done'
As you might see in the code, line 14 (as printed on script execution):
ARGV.length == 2 or fail("Usage: ./tinypng.rb
C:\...\product C:\...\product*emphasized text*")
That said, a script requires two parameters to run. Let me guess: you did not pass two parameters. Those are btw source and destination folders.
I am trying to geht this script to run: http://dysinger.net/2008/10/13/using-amazon-ec2-metadata-as-a-simple-dns but dosnt work because it is using an old amazon sdk version, i rewrote it to use the new one:
#!/usr/bin/env ruby
require "rubygems"
require "aws-sdk"
%w(optparse rubygems aws-sdk resolv pp).each {|l| require l}
options = {}
parser = OptionParser.new do |p|
p.banner = "Usage: hosts [options]"
p.on("-a", "--access-key USER", "The user's AWS access key ID.") do |aki|
options[:access_key_id] = aki
end
p.on("-s",
"--secret-key PASSWORD",
"The user's AWS secret access key.") do |sak|
options[:secret_access_key] = sak
end
p.on_tail("-h", "--help", "Show this message") {
puts(p)
exit
}
p.parse!(ARGV) rescue puts(p)
end
if options.key?(:access_key_id) and options.key?(:secret_access_key)
puts "127.0.0.1 localhost"
AWS.config(options)
AWS::EC2.new(options)
answer = AWS::EC2::Client.new.describe_instances
answer.reservationSet.item.each do |r|
r.instancesSet.item.each do |i|
if i.instanceState.name =~ /running/
puts(Resolv::DNS.new.getaddress(i.privateDnsName).to_s +
" #{i.keyName}.ec2 #{i.keyName}")
end
end
end
else
puts(parser)
exit(1)
end
What this should do is outputing a new /etc/hosts file with my ec2 instances in it.
And i get a response =D, but answer is a hash and therefore i get the
error undefined method `reservationSet' for #<Hash:0x7f7573b27880>.
And this is my problem, since i dont know Ruby at all ( All I was doing was reading Amazon Documentation and playing around so i get an answer ). Somehow in the original example this seemed to work. I suppose that back then, the API did not return a hash, anyway...how can i iterate through a hash like above, to get this to work?
This code may help you:
answer = AWS::EC2::Client.new.describe_instances
reservations = answer[:reservation_set]
reservations.each do |reservation|
instances = reservation[:instances_set]
instances.each do |instance|
if instance[:instance_state][:name] == "running"
private_dns_name = instance[:private_dns_name]
key_name = instance[:key_name]
address = Resolv::DNS.new.getaddress(private_dns_name)
puts "{address} #{key_name}.ec2 #{key_name}"
end
end
end
Generally change your code from using methods with names e.g. item.fooBarBaz to using a hash e.g. item[:foo_bar_baz]
When you're learning Ruby the "pp" command is very useful for pretty-printing variables as you go, such as:
pp reservations
pp instances
pp private_dns_name
Hi I have a simple form that allows a user to input a name, their gender and a password. I use Digest::MD5.hexdigest to encrypt the input. Once I have the encrypted input eg, d1c261ede46c1c66b7e873564291ebdc, I want to be able to append this to a file I have already created. However every thing I have tried just isn't working. Can anyone please help and thank you in advance. Here is what I have:
input = STDIN.read( ENV["CONTENT_LENGHT"] )
puts "Content-type: text/html \n\n"
require 'digest/md5'
digest = Digest::MD5.hexdigest(input)
f = File.open("register.txt", "a")
f.write(digest)
f.close
I have also tried this with no luck:
File.open("register.txt", "a") do |f|
f.puts(digest)
end
If the code is verbatim then I think you have a typo in the first line: did you mean CONTENT_LENGHT or is it a typo? ENV[] will return a string if the variable is set, which will upset STDIN#read. I get TypeError: can't convert String into Integer. Assuming the typo, then ENV[] returns nil, which tells STDIN#read to read until EOF, which from the console means, I think, Control-Z. That might be causing a problem.
I suggest you investigate by modifying your script thus:
read_length = ENV["CONTENT_LENGTH"].to_i # assumed typo fixed, convert to integer
puts "read length = #{read_length}"
input = STDIN.read( read_length )
puts "input = #{input}"
puts "Content-type: text/html \n\n" # this seems to serve no purpose
require 'digest/md5'
digest = Digest::MD5.hexdigest(input)
puts "digest = #{digest}"
# prefer this version: it's more idiomatically "Rubyish"
File.open("register.txt", "a") do |f|
puts "file opened"
f.puts(digest)
end
file_content = File.read("register.txt")
puts "done, file content = #{file_content}"
This works on my machine, with the following output (when CONTENT_LENGTH set to 12):
read length = 12
abcdefghijkl
input = abcdefghijkl
Content-type: text/html
digest = 9fc9d606912030dca86582ed62595cf7
file opened
done, file content = 6cfbc6ae37c91b4faf7310fbc2b7d5e8
e271dc47fa80ddc9e6590042ad9ed2b7
b0fb8772912c4ac0f13525409c2b224e
9fc9d606912030dca86582ed62595cf7
I found this script on pastebin that is an IRC bot that will find youtube videos for you. I have not touched it at all (Bar the channel settings), it works well however it won't grab the URL to the video that has been searched. This code is not mine! I jsut would like to get it to work as it would be quite useful!
#!/usr/bin/env ruby
require 'rubygems'
require 'cinch'
require 'nokogiri'
require 'open-uri'
require 'cgi'
bot = Cinch::Bot.new do
configure do |c|
c.server = "irc.freenode.net"
c.nick = "YouTubeBot"
c.channels = ["#test"]
end
helpers do
#Grabs the first result and returns the TITLE,LINK,DESCRIPTION
def youtube(query)
doc = Nokogiri::HTML(open("http://www.youtube.com/results?q=#{CGI.escape(query)}"))
result = doc.css('div#search-results div.result-item-main-content')[0]
title = result.at('h3').text
link = "www.youtube.com"+"#{result.at('a')[:href]}"
desc = result.at('p.description').text
rescue
"No results found"
else
CGI.unescape_html "#{title} - #{desc} - #{link}"
end
end
on :channel, /^!youtube (.+)/ do |m, query|
m.reply youtube(query)
end
on :channel, "polkabot quit" do |m|
m.channel.part("bye")
end
end
bot.start
Currently if i use the command
!youtube asdf
I get this returned:
19:25 < YouTubeBot> asdfmovie - Worldwide Store www.cafepress.com ...
asdfmovie cakebomb tomska
epikkufeiru asdf movie ... tomska ... [Baby Giggling] Man: Got your nose! [Baby ...
- www.youtube.com#
As you can see the URL is just www.youtube.com# not the URL of the video.
Thanks a lot!
This is an xpath issue. It looks like the third 'a' that has the href you want so try:
link = "www.youtube.com#{result.css('a')[2][:href]}"