Re: [go-nuts] Executing a tar command from within a Go program
The variadic args worked perfectly. Thanks.
I did not use the archive/tar and compress/gzip approach because that wold
be a lot more complicated than just executing a tar command. Those
packages are oriented towards reading/writing the contents of
archive/compressed files into the program rather than just extracting a
file from a compressed archive.
On Wednesday, April 20, 2022 at 10:28:06 AM UTC-6 wagner riffel wrote:
> On Wed Apr 20, 2022 at 6:16 PM CEST, Dean Schulze wrote:
> > I need to execute this tar command
> >
> > *tar xzf dir1/dir2/somefile.tgz --directory=dir1/dir2/*
> >
>
> Did you considered using the packages "archive/tar" and
> "compress/gzip" to achive this?
>
> > *argStr := "xzf dir1/dir2/somefile.tgz --directory=dir1/dir2/"output, err
> > := exec.Command("tar", argStr).Output()*
> >
>
> exec.Command arguments are variadic, each argument is one argv, thus I
> think you meant exec.Command("tar", "xzf", "dir1/dir2/somefile.tgz",
> "--directory=dir1/dir2/")
>
> -w
>
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Re: [go-nuts] Executing a tar command from within a Go program
On Wed, Apr 20, 2022 at 6:16 PM Dean Schulze
wrote:
> I need to execute this tar command
>
> *tar xzf dir1/dir2/somefile.tgz --directory=dir1/dir2/*
>
> from within a Go program. I've verified that it works from the command
> line. I've tried using
>
>
> *argStr := "xzf dir1/dir2/somefile.tgz --directory=dir1/dir2/"output, err
> := exec.Command("tar", argStr).Output()*
>
You need to pass the args separately, not as one string:
output, err := exec.Command("tar", "xzf", "dir1/dir2/somefile.tgz",
"--directory=dir1/dir2/").Output()
I also tend to set `cmd.Stderr = os.Stderr` to make sure I see error
messages, when executing commands.
>
>
> but it returns an error code of 2 with no other output indicating what is
> wrong.
>
> Using exec.Command(name, arg) is always a guessing game as to what the
> command name should be and what the argument should be. How do I execute
> this tar command from within Go?
>
> --
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>
> .
>
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Re: [go-nuts] Executing a tar command from within a Go program
Also, the Output method only returns what was wrote to stdout, tar argument parsing errors are probably in stderr, using CombinedOutput() has better effect to debug. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CJF7P5OFW5I8.2YK5VGDWTSBVV%40pampas.
Re: [go-nuts] Executing a tar command from within a Go program
On Wed Apr 20, 2022 at 6:16 PM CEST, Dean Schulze wrote:
> I need to execute this tar command
>
> *tar xzf dir1/dir2/somefile.tgz --directory=dir1/dir2/*
>
Did you considered using the packages "archive/tar" and
"compress/gzip" to achive this?
> *argStr := "xzf dir1/dir2/somefile.tgz --directory=dir1/dir2/"output, err
> := exec.Command("tar", argStr).Output()*
>
exec.Command arguments are variadic, each argument is one argv, thus I
think you meant exec.Command("tar", "xzf", "dir1/dir2/somefile.tgz",
"--directory=dir1/dir2/")
-w
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[go-nuts] Executing a tar command from within a Go program
I need to execute this tar command
*tar xzf dir1/dir2/somefile.tgz --directory=dir1/dir2/*
from within a Go program. I've verified that it works from the command
line. I've tried using
*argStr := "xzf dir1/dir2/somefile.tgz --directory=dir1/dir2/"output, err
:= exec.Command("tar", argStr).Output()*
but it returns an error code of 2 with no other output indicating what is
wrong.
Using exec.Command(name, arg) is always a guessing game as to what the
command name should be and what the argument should be. How do I execute
this tar command from within Go?
--
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