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doc: add docment and playground demo for v2.1.19
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@@ -239,14 +239,17 @@ func main() {
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}
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```
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### <span id="ExecCommand">CompareOsEnv</span>
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### <span id="ExecCommand">ExecCommand</span>
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<p>Execute shell command, return the stdout and stderr string of command, and error if error occur. param `command` is a complete command string, like, ls -a (linux), dir(windows), ping 127.0.0.1. In linux, use /bin/bash -c to execute command, In windows, use powershell.exe to execute command.</p>
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<b>Signature:</b>
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```go
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func ExecCommand(command string) (stdout, stderr string, err error)
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type (
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Option func(*exec.Cmd)
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)
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func ExecCommand(command string, opts ...Option) (stdout, stderr string, err error)
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```
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<b>Example:</b>
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@@ -246,7 +246,10 @@ func main() {
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<b>Signature:</b>
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```go
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func ExecCommand(command string) (stdout, stderr string, err error)
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type (
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Option func(*exec.Cmd)
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)
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func ExecCommand(command string, opts ...Option) (stdout, stderr string, err error)
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```
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<b>Example:</b>
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