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exec: document dir option for Run

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R=golang-dev, bradfitzwork, rsc1, peterGo
CC=golang-dev
https://golang.org/cl/4271056
This commit is contained in:
Gustavo Niemeyer 2011-03-21 11:25:00 -03:00
parent b889a9f941
commit 2187f43e63
1 changed files with 4 additions and 2 deletions
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6
src/pkg/exec/exec.go
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@ -75,17 +75,19 @@ func modeToFiles(mode, fd int) (*os.File, *os.File, os.Error) {
// Run starts the named binary running with
// arguments argv and environment envv.
// If the dir argument is not empty, the child changes
// into the directory before executing the binary.
// It returns a pointer to a new Cmd representing
// the command or an error.
//
// The parameters stdin, stdout, and stderr
// The arguments stdin, stdout, and stderr
// specify how to handle standard input, output, and error.
// The choices are DevNull (connect to /dev/null),
// PassThrough (connect to the current process's standard stream),
// Pipe (connect to an operating system pipe), and
// MergeWithStdout (only for standard error; use the same
// file descriptor as was used for standard output).
// If a parameter is Pipe, then the corresponding field (Stdin, Stdout, Stderr)
// If an argument is Pipe, then the corresponding field (Stdin, Stdout, Stderr)
// of the returned Cmd is the other end of the pipe.
// Otherwise the field in Cmd is nil.
func Run(name string, argv, envv []string, dir string, stdin, stdout, stderr int) (c *Cmd, err os.Error) {