ok
I don't know how to change rvm version over ssh under os x server.
What I do:
Login on server over ssh
run script (below) and catch error
Error: 'rvm is not a funciton, many-many-words'
What I have as script:
use File::Spec;
my $server_directory = File::Spec->catfile($ENV{HOME},'MyProject');
my $exec_file = File::Spec->catfile($server_directory,'run_script.rb');
my $run_ruby_script = qq'bundle exec ruby $exec_file'.' '.join(' ',#ARGV);
# reload bash profile
print qx(source $ENV{HOME}/.bash_profile);
print qx(source $ENV{HOME}/.bashrc);
# reload ruby
print qx(source $ENV{HOME}/.rvm/scripts/rvm);
my $ruby_setup = qq([[ -s "$ENV{HOME}/.rvm/scripts/rvm" ]] && source "$ENV{HOME}/.rvm/scripts/rvm");
print $ruby_setup. "\n";
# change directory
chdir($server_directory);
# configure gemset name
my $version = qx(cat .ruby-version);
chomp($version);
my $gemset = qx(cat .ruby-gemset);
chomp($gemset);
my $change_rvm_gemset = qq(rvm use $version\#$gemset);
print qx($ruby_setup && $change_rvm_gemset);
print qx(rvm current);
Ok, after all.
def exec_via_bash(line)
puts %Q(#{line})
exec = 'bash -c "#{line}"'
puts `#{exec}`
end
def RubySetup
# reload bash profile
homedir = ENV['HOME']
exec_via_bash %Q(source #{homedir}/.bash_profile);
exec_via_bash %Q(source #{homedir}/.bashrc);
# reload ruby
exec_via_bash %Q(source #{homedir}/.rvm/scripts/rvm);
ruby_setup = %Q([[ -s "#{homedir}/.rvm/scripts/rvm" ]] && source "#{homedir}/.rvm/scripts/rvm")
puts ruby_setup
ruby_setup
end
if ARGV.empty?
puts "there is not enough arguments passed. maybe you forget ruby file to exec?"
exit(1)
end
ruby_script_path = ARGV.shift;
exec_file_absolute_path = File.expand_path(ruby_script_path)
unless File.exists? exec_file_absolute_path
puts "file #{exec_file_absolute_path} doesn't exists!"
exit(1)
end
exec_file_directory = File.dirname(exec_file_absolute_path)
exec_bundle = %Q'bundle exec ruby #{exec_file_absolute_path}' + ' ' + ARGV.join(' ')
# change directory
Dir.chdir(exec_file_directory);
# print %x(ls);
# configure gemset name
version = %x(cat .ruby-version).strip;
gemset = %x(cat .ruby-gemset).strip;
change_rvm_gemset = %Q(rvm use #{version}\##{gemset});
ruby_setup = RubySetup()
exec_bash_login_line = [ruby_setup, change_rvm_gemset, exec_bundle].join ' && ';
puts 'exec bash login line: ' + exec_bash_login_line
forced = %Q(bash --login -c '#{exec_bash_login_line}');
puts forced, "\n";
puts %x(#{forced});
ok, this script is not a kind of beauty, but it works well.
Example of usage?
ruby script.rb ~/bla/bla/bla/run_your_program.rb --first_argument --second_argument a,b,c --etc
As I said before:
I've already on the server via ssh.
So, I need to run scripts via launchd.
And I should do it with
# part of launchd worker
<string>bash</string>
<string>-c</string>
<string>ruby ~/PathToCharmScript.rb -r a</string>
P.S:
Please, help me with improvements of this script for others!
Here is a gist: wow_this_works
Related
This code is intended to check whether the user entered an option with the command:
require 'optparse'
ARGV << '-h' if ARGV.empty?
options = {}
OptionParser.new do |parser|
parser.banner = "Usage: myruby.rb [options]"
parser.on("-h", "--help", "Help myruby") do | |
puts parser
exit
end
parser.on("-p", "--people PEOPLE", "PPPPPPPPPP") do |v|
options[:pppp] = v
end
parser.on("-c", "--coordinate COORDINATE", "ccccccccc") do |x|
options[:coordinate] = x
end
end.parse!
# Start my program from this line
unless options[:pppp] && options[:coordinate]
puts "Exit OK because missing both (option and argument) p,c"
exit
end
puts "It work if only run myruby.rb -p argument_P -c argument_c"
I just found an error. If the user enters only one but not both required ARGV (-p -c).
I can check and exit from my application, but I want to filter ARGV by exiting to assign ARGV << 'h'.
What is the best way?
updated 1: Added unless case before run my program problem : Worked as
asked, but error when -p or -c missing argument. example : ruby
thiscode.rb -p bababa -c error : rb:17:in `': missing
argument (OptionParser::MissingArgument)
Just explicitly check the presence of both after options are parsed:
unless options[:pppp] && options[:coordinate]
puts USAGE # or do whatever else
exit
end
I have a program that tries to open a file:
Dir.chdir(File.dirname(__FILE__))
puts "Enter file name: ";
relPath = gets;
absPath = Dir.pwd << "/" << relPath;
if File.exist?(absPath) then
puts "File exists";
file = File.open(absPath, "r");
other code...
else
puts "File does not exist";
end
It always prints "File does not exist" even when the current directory exists and the file also exists. The file and script are in the same directory.
I am running it on Mac OS X Yosemite (10.10.3) and Ruby 2.2.0p0.
I can't explain why (albeit I have strong belief that it's for some whitespace characters) but with this little contribution it works ok.
Dir.chdir(File.dirname(__FILE__))
print "Enter file name:";
relPath = gets.chomp; #intuitively used this, and it wroked fine
absPath = File.expand_path(relPath) #used builtin function expand_path instead of string concatenation
puts absPath
puts File.file?(absPath)
if File.exist?(absPath) then
puts "File exists";
puts File.ctime(absPath) #attempting a dummy operation :)
else
puts "File does not exist";
end
runnning code
$ ls -a anal*
analyzer.rb
$ ruby -v
ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-linux]
ziya#ziya:~/Desktop/code/ruby$ ruby fileexists.rb
Enter file name:analyzer.rb
/home/ziya/Desktop/code/ruby/analyzer.rb #as a result of puts absPath
true #File.file?(absPath) => true
File exists
2015-06-11 12:48:31 +0500
That code has syntax error ("if" doesnt need "then"), and you dont have to put ";" after each line.
try
Dir.chdir(File.dirname(__FILE__))
puts "Enter file name: "
relPath = gets
absPath = "#{Dir.pwd}/#{relPath.chop}"
if File.exist?(absPath)
puts "File exists"
file = File.open(absPath, "r")
else
puts "File does not exist"
end
remember that gets will add a new line character so you will need to do a chomp, and that way to concatenate string won't work on ruby.
Your code is not idiomatic Ruby. I'd write it something like this untested code:
Dir.chdir(File.dirname(__FILE__))
puts 'Enter file name: '
rel_path = gets.chomp
abs_path = File.absolute_path(rel_path)
if File.exist?(abs_path)
puts 'File exists'
File.foreach(abs_path) do |line|
# process the line
end
else
puts 'File does not exist'
end
While Ruby supports the use of ;, they're for use when we absolutely must provide multiple commands on one line. The ONLY time I can think of needing that is when using Ruby to execute single-line commands at the command-line. In normal scripts I've never needed ; between statements.
then is used with if when we're using a single line if expression, however, we have trailing if which removes the need for then. For instance, these accomplish the same thing but the second is idiomatic, shorter, less verbose and easier to read:
if true then a = 1 end
a = 1 if true
See "What is the difference between "if" statements with "then" at the end?" for more information.
Instead of relPath and absPath we use snake_case for variables, so use rel_path and abs_path. It_is_a_readability AndMaintenanceThing.
File.absolute_path(rel_path) is a good way to take the starting directory and return the absolute path given a relative directory.
File.foreach is a very fast way to read a file, faster than slurping it using something like File.read. It is also scalable whereas File.read is not.
A couple searches didn't turn up an obvious way to update my RVM-based ruby and gems so I whipped up the following script. The desire is to get a list of currently installed gems, update to the new ruby, pull those gems forward, then clean out the old versions of everything. I'm posting it here for feedback, since I don't see an easy way to test it and I'm barely competent at ruby and mostly clueless about RVM.
#!/usr/bin/env ruby
module RubyUpdate
def self.cmd(str, cmd)
puts str
retval = %x(#{cmd})
throw(SystemCallError, cmd) unless $? == 0
return retval
end
def self.update
gems = self.cmd %Q(Getting list of installed gems...), %Q(gem list | cut -d ' ' -f 1)
self.cmd %Q(Updating ruby...), %Q(\\curl -L https://get.rvm.io | bash -s stable --ruby)
self.cmd %Q(Reloading...), %Q(rvm reload)
self.cmd %Q(Updating gems..), %Q(gem update #{gems.gsub("\n", " ")})
self.cmd %Q(Cleaning up gems...), %Q(gem cleanup)
self.cmd %Q(Reloading...), %Q(rvm reload)
self.cmd %Q(Cleaning up ruby...), %Q(rvm cleanup all)
end
end
begin
RubyUpdate::update
puts "Update successful!"
rescue SystemCallError => e
puts "Update failed!"
puts e
end
you should use:
rvm get stable
rvm upgrade current ruby
I have two apps on my machine.
Each app (server) has it's own gemset and works on a different ruby version.
I will manage those apps with god which is installed in it's own gemset.
My god config file config.god looks like this:
God.watch do |w|
current_path = "/home/vagrant/server-1"
w.name = "server 1"
w.start = "ruby #{current_path}/simple-server.rb"
w.keepalive
end
God.watch do |w|
current_path = "/home/vagrant/server-2"
w.name = "server 2"
w.start = "ruby #{current_path}/simple-server.rb"
w.keepalive
end
My servers are simply writing the ruby version to a file (/home/vagrant/server-2/simple-server.rb):
require "date"
loop do
# simple console output
puts "Hello on #{RUBY_VERSION}, #{RUBY_PATCHLEVEL}, #{RUBY_PLATFORM}, #{RUBY_RELEASE_DATE}"
# Specify the name of the log file
log_file = File.join File.expand_path( File.dirname(__FILE__) ), "testfile.txt"
# Write the log into the file
File.open( log_file, 'a') do |f|
date = DateTime.now
date = date.strftime("%H:%M:%S")
f.puts "#{date} on #{RUBY_VERSION}, #{RUBY_PATCHLEVEL}, #{RUBY_PLATFORM}, #{RUBY_RELEASE_DATE}"
end
sleep 2
end
I run god with god -c config.god.
The problem is that my apps are not running with the ruby versions which is specified in the .rvmrc.
I have also tried:
~/.rvm/bin/wrapped_god -d config.god -D
rvmsudo ~/.rvm/bin/wrapped_god -d config.god -D
rvmsudo god -d config.god -D
Is there a solution for this case?
EDIT 2012.08.27:
I have changed my god config as follows:
w.start="~/.rvm/bin/rvm in #{current_path} do ruby simple-server.rb"
And it worked.
try:
start="~/.rvm/bin/rvm in #{current_path} do ruby simple-server.rb"
The following script creates symlinks as expected, but the original file can never be found. Can someone tell me why? They appear to be valid symlinks because they register as aliases in OS X and File.symlink? returns true once they have been created.
#!/usr/bin/env ruby
case ARGV.first when 'link'
file = ARGV[1]
if !File.exist?(file)
puts "Unfortunately, \"#{file}\" was not found."
exit 0
end
bin = "/usr/local/bin/"
if !File.directory?(bin)
puts "#{bin} does not exist!"
puts "creating #{bin}..."
system "mkdir -p #{bin}"
end
if File.extname(file).empty?
if File.symlink?(bin + file)
puts "Unfortunately, \"#{bin + file}\" already exists."
exit 0
end
name = bin + file
puts "Symlinking #{file} to #{name}..."
File.symlink(file, name)
system "chmod +x #{name}"
else
name = file.split(File.extname(file))
name = bin + name.first
if File.symlink?(name)
puts "Unfortunately, \"#{name}\" already exists."
exit 0
end
puts "Symlinking #{file} to #{name}..."
File.symlink(file, name)
system "chmod +x #{name}"
end
else
puts "try: bin link <file>"
end
The script is run in the following way:
ruby script.rb link myfile.rb
To answer my own question, replacing the instances of
File.symlink(file, name)
with
File.symlink(File.expand_path(file), name)
worked perfectly.