How to write to file in Ruby?

Are you looking for the following?

File.open(yourfile, 'w') { |file| file.write("your text") }

You can use the short version:

File.write('/path/to/file', 'Some glorious content')

It returns the length written; see ::write for more details and options.

To append to the file, if it already exists, use:

File.write('/path/to/file', 'Some glorious content', mode: 'a')

This is preferred approach in most cases:

 File.open(yourfile, 'w') { |file| file.write("your text") }

When a block is passed to File.open, the File object will be automatically closed when the block terminates.

If you don't pass a block to File.open, you have to make sure that file is correctly closed and the content was written to file.

begin  file = File.open("/tmp/some_file", "w")  file.write("your text") rescue IOError => e  #some error occur, dir not writable etc.ensure  file.close unless file.nil?end

You can find it in documentation:

static VALUE rb_io_s_open(int argc, VALUE *argv, VALUE klass){    VALUE io = rb_class_new_instance(argc, argv, klass);    if (rb_block_given_p()) {        return rb_ensure(rb_yield, io, io_close, io);    }    return io;}