popen2e(*cmd, &block)
Class Public methods
::popen2e is similer to ::popen3 except it merges the standard output stream and the standard error stream.
Block form:
1 2 3 4 5 | Open3.popen2e([env,] cmd... [, opts]) {|stdin, stdout_and_stderr, wait_thr| pid = wait_thr.pid # pid of the started process. ... exit_status = wait_thr.value # Process::Status object returned.} |
Non-block form:
1 2 3 4 | stdin, stdout_and_stderr, wait_thr = Open3.popen2e([env,] cmd... [, opts])...stdin.close # stdin and stdout_and_stderr should be closed explicitly in this form.stdout_and_stderr.close |
See Process.spawn for the optional hash arguments env and opts.
Example:
1 2 3 4 5 6 7 8 9 | # check gcc warningssource = "foo.c"Open3.popen2e("gcc", "-Wall", source) {|i,oe,t| oe.each {|line| if /warning/ =~ line ... end }} |
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