Method: Bio::Command.query_command_fork

Defined in:
lib/bio/command.rb

.query_command_fork(cmd, query = nil, options = {}) ⇒ Object

Executes the program with the query (String) given to the standard input, waits the program termination, and returns the output data printed to the standard output as a string.

Fork (by using IO.popen(“-”)) and exec is used to execute the program.

From the view point of security, this method is recommended rather than query_command_popen.

Arguments:

  • (required) cmd: Array containing String objects

  • (optional) query: String

  • (optional) options: Hash

Returns

String or nil



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# File 'lib/bio/command.rb', line 301

def query_command_fork(cmd, query = nil, options = {})
  ret = nil
  call_command_fork(cmd, options) do |io|
    io.sync = true
    io.print query if query
    io.close_write
    ret = io.read
  end
  ret
end