- Inheritance
Open3 grants you access to stdin, stdout, and stderr when running another program. Example:
require "open3"
include Open3
stdin, stdout, stderr = popen3('nroff -man')
Open3.popen3 can also take a block which will receive stdin, stdout and stderr as parameters. This ensures stdin, stdout and stderr are closed once the block exits. Example:
require "open3"
Open3.popen3('nroff -man') { |stdin, stdout, stderr| ... }
Methods
Instance
| Visibility | Signature |
|---|---|
| public | popen3 (*cmd) {|| ...} |
Instance Method Detail
popen3(*cmd) {|| ...}
Open stdin, stdout, and stderr streams and start external executable. Non-block form:
require 'open3' [stdin, stdout, stderr] = Open3.popen3(cmd)
Block form:
require 'open3'
Open3.popen3(cmd) { |stdin, stdout, stderr| ... }
The parameter cmd is passed directly to Kernel#exec.