I've received a list of emails that I'd like to run an email campaign on, however, in the list there are some URL's... and it complicates things.
Here's the standard formatting of the email address, for example:
news#ydr.com
I'd like to paste the list in terminal and run a command to ONLY capture all of the email addresses and save them to a file and remove any URLS.
Please advise! It is much appreciated :)
If you are just looking to catch most emails this regex might work.
I got this regex from here How to validate an email address using a regular expression?
They talk about the much more complicated RFC822 email regex
#!/usr/bin/env ruby
input = $stdin.readlines # ctrl + D after paste
input.each do |f|
puts f if f[/^[a-zA-Z0-9_.+\-]+#[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-.]+$/]
end
# test input
# foo#bar.com
# www.cnn.com
# test.email#go.com
# turdburgler#mcdo.net
# http://www.google.com
To write emails to a file:
#!/usr/bin/env ruby
file = File.open("emails.txt", "w")
input = $stdin.readlines # ctrl + D after paste
input.each do |f|
file.write(f) if f[/^[a-zA-Z0-9_.+\-]+#[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-.]+$/]
end
file.close
Just to be clear, this is a ruby script which should be ran like this.
Save the script as a file, ie email_parser.rb.
chmod +x email_parser.rb
./email_parser.rb # this will wait for stdin, here you paste the list in to the terminal
When the terminal is hanging waiting, paste the list of emails in, then press ctrl + D to tell the program that this is the EOF. The program will then run through the list of emails/urls and parse. The output of this will be a file if using the updated script. The file will be in the same folder you ran the script and be called emails.txt
Related
I have a script that's a plugin for redmine which enhances the application to send encrypted mail using gpg. At some point this stopped working. Unfortunately the one who wrote that script is not available anymore and I am an admin with only very limited knowledge of RoR.
The problem is, that obviously the script creates a file with the mail body, saves it to temp, encrypts it to an output file, reads this output and then sends the mail.
With an empty /tmp directory (such as after rebooting the whole server), the gpg.in file gets created when I try to send a test mail. But then I get an error that the gpg.out file was not available. Creating it using touch does cause an empty email being send so obviously the script does not write anything to that file.
File.open('/tmp/gpg.in', 'w') do |f1| #<--- Works, file is created
f1.puts(body)
end
list_of_keys = [ rec ]
Gpgr::Encrypt.file('/tmp/gpg.in', :to => '/tmp/gpg.out').encrypt_using(list_of_keys) #<- gpg.out wird nicht erzeugt.
text = ""
File.open('/tmp/gpg.out', 'r') do |f2| #<- throws file not found error, if file not there. When file was created empty using touch, it sends an empty mail
With my limited RoR knowledge, I can't figure out how to debug this. Permissions on /tmp are 777 so the script should be allowed to write there and obviously has because File.open('/tmp/gpg.in', 'w') works correctly all the time without an error. Hence I expect the problem in Gpgr::Encrypt.file not working correctly, but I also don't get any error from that function it fails silently.
So I have a Ruby script (using Ruby because we have a library of pre-existing code that I need to use). From within Ruby I am using backticks to call Linux commands, specifically in this case the "mv" command. I am trying to move one file to another location but I keep getting the error message that x and y are "the same file" even though they are very clearly NOT the same file.
Here is the code in Ruby:
#!/usr/local/rvm/rubies/ruby-2.1.1/bin/ruby
masterFiles=[]
masterFiles << "/mnt/datadrive/Data Capture/QualityControl/UH_HRA_SVY/Scans and DataOutput/Data/UH_HRA_SVY_DATA.txt"
masterFiles << "/mnt/datadrive/Data Capture/QualityControl/UH_HRA_SVY_SPAN/Scans and DataOutput/Data/UH_HRA_SVY_SPAN_DATA.txt"
tm=Time.new.strftime("%Y%m%d")
masterFiles.each do |mf|
if File.exist?(mf)
qmf=39.chr + mf + 39.chr
`cat #{qmf} >> /tmp/QM`
savename=39.chr + \
"/mnt/datadrive/Data Capture/QualityControl/UH_HRA_SVY/Scans and DataOutput/Data/DailyFiles/" + \
File.basename(mf).gsub(".txt","_"+tm) + ".txt" + 39.chr
`mv #{qmf} #{savename}`
end
end
The error that I get is this:
mv: `/mnt/datadrive/Data Capture/QualityControl/UH_HRA_SVY_SPAN/Scans
and DataOutput/Data/UH_HRA_SVY_SPAN_DATA.txt' and `/mnt/datadrive/Data
Capture/QualityControl/UH_HRA_SVY/Scans and
DataOutput/Data/DailyFiles/UH_HRA_SVY_SPAN_DATA_20140530.txt' are the
same file
If I change this line:
`mv #{qmf} #{savename}`
To this:
puts "mv #{qmf} #{savename}"
And then run the output, it works as expected.
I am pretty sure that this has to do with spaces in the path. I have tried every combination of double-quoting, triple-quoting, quadruple-quoting, and back-slashing I can think of to resolve this but no go. I have also tried using FileUtils.mv but get what is basically the same error worded differently.
Can anybody help ? Thanks a lot.
p.s. I realize it's entirely possible that I could be going about this in an entirely wrong-headed way, so feel free to point that out if so. However, I am trying to use the tools which I already have some knowledge of (cat, mv, etc) instead of re-inventing the wheel.
You could use FileUtils.mv
I often do aliases like so:
require 'fileutils'
def mv(from, to)
FileUtils.mv(from, to)
end
And inside the mv() method I do additional safeguards, i.e. if the file does not exist, if there is a lack of permissions and so forth.
If you then still have problems with filenames that have ' ' blank characters, try to put the file into a "" quote like:
your_target_location = "foo/bar bla"
Ok so i have a ruby script that currently prompts the user for a string location of a folder on the users harddrive ...this works well
puts "\nEnter the location of the files"
loop do
print "\nLocation: "
reply = ''
reply = STDIN.gets.strip
break if File.directory?(reply)
puts File.directory?(reply)
end
But i was wondering if there was another tool other then the STDIN (which currently makes the user enter a string of the path) that will popup a folder search that the user can navigate to ...if there is anything else I can provide for anyone to help you help me..
I can ever use rails if there is no other option but i have no idea whats available to me
There are a many Ruby GUI libraries; pick one--most will have a file dialog.
For simple dialogs, Zenity is fine.
This is a file selection dialog:
file = `zenity --file-selection --title="Select a file"`.chomp
Adding one parameter changes it to a directory selection dialog:
dir = `zenity --file-selection --directory --title="Select a directory"`.chomp
I want to read only the first line of a file using Ruby in the fastest, simplest, most idiomatic way possible. What's the best approach?
(Specifically: I want to read the git commit UUID out of the REVISION file in my latest Capistrano-deployed Rails directory, and then output that to my tag. This will let me see at an http-glance what version is deployed to my server. If there's an entirely different & better way to do this, please let me know.)
This will read exactly one line and ensure that the file is properly closed immediately after.
strVar = File.open('somefile.txt') {|f| f.readline}
# or, in Ruby 1.8.7 and above: #
strVar = File.open('somefile.txt', &:readline)
puts strVar
Here's a concise idiomatic way to do it that properly opens the file for reading and closes it afterwards.
File.open('path.txt', &:gets)
If you want an empty file to cause an exception use this instead.
File.open('path.txt', &:readline)
Also, here's a quick & dirty implementation of head that would work for your purposes and in many other instances where you want to read a few more lines.
# Reads a set number of lines from the top.
# Usage: File.head('path.txt')
class File
def self.head(path, n = 1)
open(path) do |f|
lines = []
n.times do
line = f.gets || break
lines << line
end
lines
end
end
end
You can try this:
File.foreach('path_to_file').first
How to read the first line in a ruby file:
commit_hash = File.open("filename.txt").first
Alternatively you could just do a git-log from inside your application:
commit_hash = `git log -1 --pretty=format:"%H"`
The %H tells the format to print the full commit hash. There are also modules which allow you to access your local git repo from inside a Rails app in a more ruby-ish manner although I have never used them.
first_line = open("filename").gets
I think the jkupferman suggestion of investigating the git --pretty options makes the most sense, however yet another approach would be the head command e.g.
ruby -e 'puts `head -n 1 filename`' #(backtick before `head` and after `filename`)
Improving on the answer posted by #Chuck, I think it might be worthwhile to point out that if the file you are reading is empty, an EOFError exception will be thrown. Catch and ignore the exception:
def readit(filename)
text = ""
begin
text = File.open(filename, &:readline)
rescue EOFError
end
text
end
first_line = File.readlines('file_path').first.chomp
I have setup an alias in /etc/aliases so that each time an email comes in to a specific address, the text of the email is sent to a Ruby script. Like so:
example: |/etc/smrsh/my_script.rb
I need to know how to read the piped data in my Ruby script..
I have written a simple Perl script that can read the data.. just can't figure out how to do it in Ruby.
Here is the relevant lines in the Perl script:
my $fout = "/tmp/email.out";
open( EM, ">$fout" );
while( <> ) {
chomp;
print EM "$_\n";
}
You can use STDIN to read your pided data. The equivalent of your Perl code would be something like:
out = File.open("/tmp/email.out", "a+")
STDIN.each do |line|
out.puts line
end