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os/exec: document lack of implicit shell usage or globbing

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Fixes #20894

Change-Id: I0c0e906964bbd789317d07f245e64e3d61ecfa8c
Reviewed-on: https://go-review.googlesource.com/47550
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Brad Fitzpatrick 2017-07-05 23:05:42 +00:00
parent e71285c4c3
commit e335643864
1 changed files with 9 additions and 0 deletions
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9
src/os/exec/exec.go
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@ -6,6 +6,15 @@
// easier to remap stdin and stdout, connect I/O with pipes, and do other
// adjustments.
//
// Unlike the "system" library call from C and other languages, the
// os/exec package intentionally does not invoke the system shell and
// does not expand any glob patterns or handle other expansions,
// pipelines, or redirections typically done by shells. The package
// behaves more like C's "exec" family of functions. To expand glob
// patterns, either call the shell directly, taking care to escape any
// dangerous input, or use the path/filepath package's Glob function.
// To expand environment variables, use package os's ExpandEnv.
//
// Note that the examples in this package assume a Unix system.
// They may not run on Windows, and they do not run in the Go Playground
// used by golang.org and godoc.org.