If the process is not alive, and raise was true, a PTY::ChildExited exception will be raised. Otherwise it will return a Process::Status instance.

pid: The process id of the process to check
raise: If true and the process identified by pid is no longer alive a PTY::ChildExited is raised.

Socket::tcp

creates a new socket object connected to host:port using TCP/IP.

If local_host:local_port is given, the socket is bound to it.

The optional last argument opts is options represented by a hash. opts may have following options:

:connect_timeout: specify the timeout in seconds.

If a block is given, the block is called with the socket. The value of the block is returned. The socket is closed when this method returns.

If no block is given, the socket is returned.

Socket.tcp("www.ruby-lang.org", 80) {|sock|
  sock.print "GET / HTTP/1.0\r\nHost: www.ruby-lang.org\r\n\r\n"
  sock.close_write
  puts sock.read
}

Addrinfo::foreach

iterates over the list of Addrinfo objects obtained by Addrinfo.getaddrinfo.

Addrinfo.foreach(nil, 80) {|x| p x }
#=> #<Addrinfo: 127.0.0.1:80 TCP (:80)>
#   #<Addrinfo: 127.0.0.1:80 UDP (:80)>
#   #<Addrinfo: [::1]:80 TCP (:80)>
#   #<Addrinfo: [::1]:80 UDP (:80)>

Addrinfo::tcp

returns an addrinfo object for TCP address.

Addrinfo.tcp("localhost", "smtp") #=> #<Addrinfo: 127.0.0.1:25 TCP (localhost:smtp)>

UNIXSocket#path

Returns the path of the local address of unixsocket.

s = UNIXServer.new("/tmp/sock")
p s.path #=> "/tmp/sock"

StringIO#binmode

Sets the data mode in self to binary mode; see Data Mode.

StringIO#each

Calls the block with each remaining line read from the stream; does nothing if already at end-of-file; returns self. See Line IO.

StringIO#getc

Reads and returns the next character from the stream; see Character IO.

StringIO#ungetc

Pushes back (“unshifts”) a character or integer onto the stream; see Character IO.

StringIO#putc

See IO#putc.

StringIO#isatty

Returns false. Just for compatibility to IO.

StringIO#truncate

Truncates the buffer string to at most integer bytes. The stream must be opened for writing.

StringScanner#terminate

No documentation available

StringScanner#concat

Appends the given more_string to the [stored string].
Returns self.
Does not affect the [positions] or [match values].

scanner = StringScanner.new('foo')
scanner.string           # => "foo"
scanner.terminate
scanner.concat('barbaz') # => #<StringScanner 3/9 "foo" @ "barba...">
scanner.string           # => "foobarbaz"
put_situation(scanner)
# Situation:
#   pos:       3
#   charpos:   3
#   rest:      "barbaz"
#   rest_size: 6

StringScanner#charpos

No documentation available