nsenter: passing command arguments

nsenter: passing command arguments

[Nicolas]

Hi,
I'm struggling with nsenter to call commands with options because they 
are caught by nsenter and complain this is an invalid option.

How can I pass any arbitrary argument ?

Thanks for reading,
Nicolas

```
$ nsenter --target $PID --mount --uts --ipc --net --pid ls -a
nsenter: invalid option -- 'a'

Usage:
  nsenter [options] <program> [args...]

Options:
  -t, --target <pid>     target process to get namespaces from
  -m, --mount [=<file>]  enter mount namespace
  -u, --uts   [=<file>]  enter UTS namespace (hostname etc)
  -i, --ipc   [=<file>]  enter System V IPC namespace
  -n, --net   [=<file>]  enter network namespace
  -p, --pid   [=<file>]  enter pid namespace
  -U, --user  [=<file>]  enter user namespace
  -S, --setuid <uid>     set uid in user namespace
  -G, --setgid <gid>     set gid in user namespace
  -r, --root  [=<dir>]   set the root directory
  -w, --wd    [=<dir>]   set the working directory
  -F, --no-fork          do not fork before exec'ing <program>

  -h, --help     display this help and exit
  -V, --version  output version information and exit

For more details see nsenter(1).

```

-- 

Nicolas Delaby · Software Engineer · ezeep.com

ezeep GmbH · Ohlauer Str. 43 · 10999 Berlin · Germany

Registry Court: Charlottenburg · HRB133318 · Managing partner: Sascha 
Kellert

Re: nsenter: passing command arguments

[Bernhard Voelker]

On 04/17/2014 10:34 AM, Nicolas wrote:
> Hi,
> I'm struggling with nsenter to call commands with options because they 
> are caught by nsenter and complain this is an invalid option.
> 
> How can I pass any arbitrary argument ?
> 
> Thanks for reading,
> Nicolas
> 
> ```
> $ nsenter --target $PID --mount --uts --ipc --net --pid ls -a
> nsenter: invalid option -- 'a'

Use '--' to tell nsenter to stop option parsing:
  $ nsenter --target $PID --mount --uts --ipc --net --pid -- ls -a

Although I think this can be considered a bug; nsenter should
do this automatically when seeing the first non-option.

Have a nice day,
Berny

Re: nsenter: passing command arguments

[Karel Zak]

On Fri, Apr 18, 2014 at 12:17:06AM +0200, Bernhard Voelker wrote:
> On 04/17/2014 10:34 AM, Nicolas wrote:
> > Hi,
> > I'm struggling with nsenter to call commands with options because they 
> > are caught by nsenter and complain this is an invalid option.
> > 
> > How can I pass any arbitrary argument ?
> > 
> > Thanks for reading,
> > Nicolas
> > 
> > ```
> > $ nsenter --target $PID --mount --uts --ipc --net --pid ls -a
> > nsenter: invalid option -- 'a'
> 
> Use '--' to tell nsenter to stop option parsing:
>   $ nsenter --target $PID --mount --uts --ipc --net --pid -- ls -a
> 
> Although I think this can be considered a bug; nsenter should
> do this automatically when seeing the first non-option.

 Yep, fixed (also in unshare).

    Karel

-- 
 Karel Zak  <kzak@redhat.com>
 http://karelzak.blogspot.com

Re: nsenter: passing command arguments

[Nicolas]

On 04/18/2014 12:17 AM, Bernhard Voelker wrote:
> On 04/17/2014 10:34 AM, Nicolas wrote:
>> Hi,
>> I'm struggling with nsenter to call commands with options because they
>> are caught by nsenter and complain this is an invalid option.
>>
>> How can I pass any arbitrary argument ?
>>
>> Thanks for reading,
>> Nicolas
>>
>> ```
>> $ nsenter --target $PID --mount --uts --ipc --net --pid ls -a
>> nsenter: invalid option -- 'a'
>
> Use '--' to tell nsenter to stop option parsing:
>    $ nsenter --target $PID --mount --uts --ipc --net --pid -- ls -a
>
> Although I think this can be considered a bug; nsenter should
> do this automatically when seeing the first non-option.

Thank you Bernhard,

It Worked like a charm :)
Have a nice day too.

Nicolas
-- 

Nicolas Delaby · Software Engineer · ezeep.com

ezeep GmbH · Ohlauer Str. 43 · 10999 Berlin · Germany

Registry Court: Charlottenburg · HRB133318 · Managing partner: Sascha 
Kellert