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pipeline_start-c.ri
U:RDoc::AnyMethod[iI"pipeline_start:ETI"Open3::pipeline_start;TT: publico:RDoc::Markup::Document: @parts[o: RDoc::Markup::Paragraph; [I"COpen3.pipeline_start starts a list of commands as a pipeline. ;TI"=No pipes are created for stdin of the first command and ;TI" stdout of the last command.;To: RDoc::Markup::BlankLine o:RDoc::Markup::Verbatim; [ I"DOpen3.pipeline_start(cmd1, cmd2, ... [, opts]) {|wait_threads| ;TI" ... ;TI"} ;TI" ;TI"Cwait_threads = Open3.pipeline_start(cmd1, cmd2, ... [, opts]) ;TI" ... ;T: @format0o; ; [I"'Each cmd is a string or an array. ;TI"AIf it is an array, the elements are passed to Process.spawn.;T@o; ; [ I" cmd: ;TI"_ commandline command line string which is passed to a shell ;TI"_ [env, commandline, opts] command line string which is passed to a shell ;TI"b [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell) ;TI"h [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell) ;TI" ;TI"@Note that env and opts are optional, as for Process.spawn. ;T; 0o; ; [I" Example:;T@o; ; [I" # Run xeyes in 10 seconds. ;TI")Open3.pipeline_start("xeyes") {|ts| ;TI" sleep 10 ;TI" t = ts[0] ;TI"# Process.kill("TERM", t.pid) ;TI"E p t.value #=> #<Process::Status: pid 911 SIGTERM (signal 15)> ;TI"} ;TI" ;TI"3# Convert pdf to ps and send it to a printer. ;TI"1# Collect error message of pdftops and lpr. ;TI" pdf_file = "paper.pdf" ;TI" printer = "printer-name" ;TI" err_r, err_w = IO.pipe ;TI"6Open3.pipeline_start(["pdftops", pdf_file, "-"], ;TI"3 ["lpr", "-P#{printer}"], ;TI"- :err=>err_w) {|ts| ;TI" err_w.close ;TI"9 p err_r.read # error messages of pdftops and lpr. ;TI"};T; 0: @fileI"lib/open3.rb;T:0@omit_headings_from_table_of_contents_below000[ I"(*cmds, &block);T@>FI" Open3;TcRDoc::NormalModule00