Print from pi - Revision history

Andre at 09:35, 2 June 2016

2016-06-02T09:35:02Z

← Older revision		Revision as of 09:35, 2 June 2016
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	==How does server writes to the Pi ?==		==How does server writes to the Pi ?==
	* set a reverse ssh tunnel that allows the ~~server~~ to ~~login~~ Pi. http://www.thegeekstuff.com/2013/11/reverse-ssh-tunnel		* set a '''reverse ssh tunnel''' that allows the logging in to Pi from remote server. http://www.thegeekstuff.com/2013/11/reverse-ssh-tunnel
	** use ssh keys to avoid password requests.		** use ssh keys to avoid password requests.
	** ensure that '''when Pi boots the ssh tunnel is started''', by making it into a service http://blog.scphillips.com/posts/2013/07/getting-a-python-script-to-run-in-the-background-as-a-service-on-boot/		** ensure that '''when Pi boots the ssh tunnel is started''', by making it into a service http://blog.scphillips.com/posts/2013/07/getting-a-python-script-to-run-in-the-background-as-a-service-on-boot/
	* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code> ssh pi.sara 'echo "my sentence" > /root/foo'		* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code> ssh pi.sara 'echo "my sentence" > /root/foo'


			==How to to run commands on server from ebook?==
			* ebook links to cgi script
			** ideally the word wrapped in book would be sent to cgi
			** cgi scripts runs command on server, addressed to Pi


	[[Category:Research]]		[[Category:Research]]

Andre at 09:32, 2 June 2016

2016-06-02T09:32:25Z

← Older revision		Revision as of 09:32, 2 June 2016
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	Printing from a RaspberryPi to a line printer (dot matrix, receipt printer) can be done quite simply, by simply writing the text to printer using:		Printing from a RaspberryPi to a line printer (dot matrix, receipt printer) can be done quite simply, by simply writing the text to printer using:

	echo "hello printer" > /dev/usb/lp0		echo "hello printer" > /dev/usb/lp0

	Where:		Where:
	* <code>/dev/usb/lp0</code> is the location of the printer		* <code>/dev/usb/lp0</code> is the location of the printer
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	----		----

	Sara wants to expand this mechanism, to have ePub's hyperlinks to make the printer print the words under the hyperlink.		Sara wants to expand this mechanism, to have ePub's hyperlinks to make the printer print the words under the hyperlink.

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	* the server side receives the words and '''writes''' it to the Pi		* the server side receives the words and '''writes''' it to the Pi

	===How does server writes to the Pi ?===		==How does server writes to the Pi ?==
	* a reverse ssh tunnel that allows the server to login Pi. http://www.thegeekstuff.com/2013/11/reverse-ssh-tunnel		* set a reverse ssh tunnel that allows the server to login Pi. http://www.thegeekstuff.com/2013/11/reverse-ssh-tunnel
	* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code>		** use ssh keys to avoid password requests.
			** ensure that '''when Pi boots the ssh tunnel is started''', by making it into a service http://blog.scphillips.com/posts/2013/07/getting-a-python-script-to-run-in-the-background-as-a-service-on-boot/
			* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code> ssh pi.sara 'echo "my sentence" > /root/foo'



	[[Category:Research]]		[[Category:Research]]

Andre: /* How does server writes to the Pi ??? */

2016-06-02T09:16:15Z

How does server writes to the Pi ???

← Older revision		Revision as of 09:16, 2 June 2016
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	* the server side receives the words and '''writes''' it to the Pi		* the server side receives the words and '''writes''' it to the Pi

	===How does server writes to the Pi ???===		===How does server writes to the Pi ?===
	* a reverse ssh tunnel that allows the server to login Pi		* a reverse ssh tunnel that allows the server to login Pi. http://www.thegeekstuff.com/2013/11/reverse-ssh-tunnel
	* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code>		* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code>


	[[Category:Research]]		[[Category:Research]]

Andre at 11:52, 31 May 2016

2016-05-31T11:52:53Z

← Older revision		Revision as of 11:52, 31 May 2016
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	* the server side receives the words and '''writes''' it to the Pi		* the server side receives the words and '''writes''' it to the Pi

	~~'''~~How does server ~~'''~~writes~~'''~~ to the Pi ???~~'''~~		===How does server writes to the Pi ???===
	* a reverse ssh tunnel that allows the server to login Pi		* a reverse ssh tunnel that allows the server to login Pi
	* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code>		* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code>

Andre at 10:46, 31 May 2016

2016-05-31T10:46:38Z

← Older revision		Revision as of 10:46, 31 May 2016
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	* a reverse ssh tunnel that allows the server to login Pi		* a reverse ssh tunnel that allows the server to login Pi
	* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code>		* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code>


			[[Category:Research]]

Andre: Created page with "Printing from a RaspberryPi to a line printer (dot matrix, receipt printer) can be done quite simply, by simply writing the text to printer using: echo "hello printer" > /dev..."

2016-05-31T10:46:20Z

Created page with "Printing from a RaspberryPi to a line printer (dot matrix, receipt printer) can be done quite simply, by simply writing the text to printer using: echo "hello printer" > /dev..."

New page

Printing from a RaspberryPi to a line printer (dot matrix, receipt printer) can be done quite simply, by simply writing the text to printer using:
echo "hello printer" > /dev/usb/lp0
Where:
* <code>/dev/usb/lp0</code> is the location of the printer
* <code>></code> is a write to command

----
Sara wants to expand this mechanism, to have ePub's hyperlinks to make the printer print the words under the hyperlink.

In order to do so, a possible plan:
* have words in epub under hyperlink pointing towards a server-side script
** ? how can the hyperlinked word be added to href from the hyperlink. Eg. <code><a href="http://address.to.server/WORD">WORD</a></code>
* the server side receives the words and '''writes''' it to the Pi

'''How does server '''writes''' to the Pi ???'''
* a reverse ssh tunnel that allows the server to login Pi
* server runs print command over ssh. eg. <code>ssh user1@server1 'df -H'</code> <code>ssh user1@server1 'echo "hello printer" > /dev/usb/lp0'</code>