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Re: Sending Command Pipeline to a detached Screen


From: aws backup
Subject: Re: Sending Command Pipeline to a detached Screen
Date: Sat, 19 Nov 2016 21:26:05 +0200

Hi Colin,

thank you. I found following for return "\015"
But if I send it to the screen either on the end of the command pipe 

‚ĶCommand4\015" 

or as a separate command at the end 

; screen -S Screen-Name -p 0 -X stuff "\015" 

it is only attaching the text \015 but not executing the return command.

Maybe you can figure it out how to use it?

Thank you so much.

Best Regards
Robert


On 19 Nov 2016, at 14:19, Colin Richardson <address@hidden> wrote:

Oh, there is.a trick to that too. I will need to check on my raspberry pi, but I think you can send a ^M at the end and it acts like the user pressing ENTER. I don't remember the exact char off the top of my head and I am out and about shipping at the moment, but shoulder be able to google the command IDF is not M.


On 19 Nov 2016 11:54 am, "aws backup" <address@hidden> wrote:
Hi Colin,

thank you. I tried but nothing arrived in the screen or it did arrive but didn't start.
What is the exact syntax? Can I start the screen and send the commands in one command or do I have to start the screen in one command and in the next command I send the pipeline? I tried it like this:

screen -d -m -S Screen-Name; screen -S Screen-Name -p 0 -X stuff "Command1; Command2  | Command3 && Command4"

How is it with quotations in the command pipe? Can they interfere? For example:  -X stuff "command "$f" | command2 "text""

Thank you.



On 19 Nov 2016, at 12:07, Colin Richardson <address@hidden> wrote:

Have u tried -X stuff "command | command2" with the quotes?


On 19 Nov 2016 7:36 am, "aws backup" <address@hidden> wrote:
Hello,

I would like to start a screen session in detached mode and send a command pipeline to it. How can I do this?
With my approach

screen -d -m -S Name Command1; Command2  | Command3 && Command4

only Command1 is send to the screen.

Thank you.



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