Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread Jerry Geis 
it seems as xdm -root | convert -  screen.png

works just fine.

Thanks,

Jerry

On Fri, Jan 13, 2017 at 3:51 PM, Jerry Geis  wrote:

> Yes I am running as root. If I try as a user I get the same behavior.
>
> Two things here.
> If on my desktop in a gnome window I run "import -silent -window root
> screen.png" I get a file.
>
> However if I run the command using a shell script on a machine its not
> working.
> So in my script I have:
> export DISPLAY=:0.0
> /usr/bin/import -silent -window root screen.png
>
> Thanks,
>
> Jerry
>
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Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread John R Pierce 

On 1/13/2017 12:51 PM, Jerry Geis wrote:

Yes I am running as root. If I try as a user I get the same behavior.

Two things here.
If on my desktop in a gnome window I run "import -silent -window root
screen.png" I get a file.

However if I run the command using a shell script on a machine its not
working.
So in my script I have:
export DISPLAY=:0.0
/usr/bin/import -silent -window root screen.png


when you're on that gnome window,  echo $DISPLAY ... is it in fact 
:0.0 ?



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Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread Frank Cox 
On Fri, 13 Jan 2017 15:51:08 -0500
Jerry Geis wrote:

> However if I run the command using a shell script on a machine its not
> working.
> So in my script I have:
> export DISPLAY=:0.0
> /usr/bin/import -silent -window root screen.png

Does  the machine you're running the shell script on have an active X11 
display?  You can't screenshot a desktop that doesn't exist.

Does your user own the desktop that you're trying to screenshot?

Is your user on the current access control list and allowed to connect to the 
desktop?

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Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread fred roller 
On Fri, Jan 13, 2017 at 3:45 PM, fred roller  wrote:

> Just curious, are you running as root?
>

nvm, head was somewhere else.
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Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread Frank Cox 
On Fri, 13 Jan 2017 15:45:46 -0500
fred roller wrote:

> > -window root
> 
> 
> Just curious, are you running as root?

In that context -window root means the root window, i.e. your desktop.  Nothing 
to do with the root user.

See this for clarification:

https://en.wikipedia.org/wiki/Root_window

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Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread Jerry Geis 
Yes I am running as root. If I try as a user I get the same behavior.

Two things here.
If on my desktop in a gnome window I run "import -silent -window root
screen.png" I get a file.

However if I run the command using a shell script on a machine its not
working.
So in my script I have:
export DISPLAY=:0.0
/usr/bin/import -silent -window root screen.png

Thanks,

Jerry
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Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread John R Pierce 

On 1/13/2017 12:18 PM, Jerry Geis wrote:

However - I am still not able to get a screen shot - it resulting png is
just black or black.
export DISPLAY=:0.0
import -silent -window root screen.png


what is $DISPLAY *before* you set that?


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Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread fred roller 
On Fri, Jan 13, 2017 at 3:34 PM, Frank Cox 
wrote:

> -window root


Just curious, are you running as root?
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Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread Frank Cox 
On Fri, 13 Jan 2017 15:18:42 -0500
Jerry Geis wrote:

Centos 7/Mate

 import -silent -window root screen.png

I got a screenshot showing my current desktop.

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Re: [CentOS] Question on /usr/bin/import for CentOS 7

2017-01-13 Thread Jerry Geis 
Ok - I thought maybe the beep was due to error - but apparently not.
I have found how to disable the beep with the -silent option

However - I am still not able to get a screen shot - it resulting png is
just black or black.
export DISPLAY=:0.0
import -silent -window root screen.png

the file is just all black.

Thoughts?

Jerry
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