Than you..
I surely need to beef-up my comprehension of what os.exec does vs what it
does not.
On Wednesday, March 25, 2020 at 2:54:07 PM UTC-4, Kurtis Rader wrote:
>
> The exec.Command() function works fine. The problem lies in your
> understanding of what happens when you use a shell to execute that command
> versus what the Go function does. When you type that command at a shell
> prompt it parses the statement and creates a pipe and runs "echo" on the
> LHS and "xsel" on the RHS of the pipe. The exec.Command() function does
> none of that work. It simply runs an external program named "echo" with the
> two arguments you provided. In other words it is as if you typed the
> following at a shell prompt:
>
> echo "echo 'ABC'" "|xsel --clipboard"
>
> Resulting in the expected output given the arguments you passed to that
> function:
>
> echo 'ABC' |xsel --clipboard
>
> One solution is to use exec.Command() to run
>
> sh -c "echo 'ABC' |xsel --clipboard"
>
> That, however, is difficult to do in the general case since getting the
> quoting correct is a challenge.
>
>
> On Wed, Mar 25, 2020 at 11:30 AM <lgo...@gmail.com <javascript:>> wrote:
>
>> This simple command works correctly when submitted via the terminal, but
>> the same command submitted to os.exec does not !!
>> .. and I can`t understand why...
>>
>> import ( "fmt"; "os"; "os/exec"; )
>>
>> func main() {
>>
>> cb := "ABCD"
>>
>> cmd := exec.Command ("echo", "echo "+ "'" +string(cb [0:len(cb)-1] )
>> +"'", " |xsel --clipboard" )
>> cmd.Stdout = os.Stdout
>> cmd.Stderr = os.Stderr
>> err := cmd.Run() ; if err != nil { fmt.Printf("\ncmd.Run() error: %s
>> \n", err) }
>>
>> }
>>
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>>
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>> .
>>
>
>
> --
> Kurtis Rader
> Caretaker of the exceptional canines Junior and Hank
>
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