Why Does Ruby "Script/Generate" Return "No Such File or Directory"

Why does Ruby script/generate return No such file or directory?

Rails 3 is your problem (or rather the cause of). Since rails 3 all of the "script/whatever" commands have been replaced with "rails whatever".

So now you want "rails generate ..." or "rails server" instead.

Be sure to watch version numbers or post dates when looking at tutorials :)
linkage:
Missing script/generate in Rails 3

Ruby Error: No such file or directory -- script/generate (LoadError)

If you are on rails 3 then the command is:

rails generate scaffold newtest name:string

Or the slightly shorter:

rails g scaffold newtest name:string

Notice rails not ruby.

Error: No such file or directory, when trying to execute [ruby script/generate]?

I think you are meaning to do rails generate?

First create a new Rails app:

rails new random_app
cd random_app
rails generate scaffold post title:string body:text

When you "ruby" something, it looks for a file to execute.

Rails is the framework for abstraction and scaffolding.

See "Why does Ruby "script/generate" return "No such file or directory"?".

Rails 3 is the problem. Since Rails 3, all of the "script/whatever" commands have been replaced with "rails whatever".

So now you want rails generate ... or rails server instead.

Raise an error on Ruby/Script generate scaffold

You need to install bundler.

gem install bundler

and than

bundle install

after this you can generate scaffold

also look this

Ruby -s returns No such file or directory (switches)

You can only pass a single option to the command named in in the shebang line. Or truly spoken, if you pass multiple arguments, they will not get exploded but passed as single argument. In this case like:

/usr/bin/env 'ruby -s'

But the file 'ruby -s' does not exist. That's why the error message.

Following the Ruby's man page, you are supposed do use the following shebang:

#! /usr/bin/ruby -s
# :prints "true" if invoked with `-xyz' switch.
print "true\n" if $xyz

You need to call ruby directly instead of using /usr/bin/env. This is a drawback, but doing so, you can call the script like this:

./script.rb -xyz

Using gets() gives No such file or directory error when I pass arguments to my script

It looks like you want to the user to type some input by reading a line from STDIN, the best way to do this is by calling STDIN.gets and not gets. So your line becomes:

word = STDIN.gets.chomp

This is documented as IO.gets. STDIN is an instance of IO.

Right now, you're executing Kernel.gets, which does something different (emphasis mine):

Returns (and assigns to $_) the next line from the list of files in ARGV (or $*), or from standard input if no files are present on the command line.

This appears to behave like STDIN.gets if ARGV is empty, but is not the same thing, hence the confusion.

ruby: No such file or directory -- puts (LoadError) on mac

The ruby executable expects a file name, e.g.:

$ ruby test.rb

ruby puts tries to load a file named puts, resulting in the error message.

Use the -e switch to evaluate a single line / command:

$ ruby -e 'puts "Hello World"'
Hello World

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