Chroot SSH trick - Revision history

Logmanoriginal: Mark as stub, mark for wikification, add to categories

2024-08-06T17:00:44Z

Mark as stub, mark for wikification, add to categories

← Older revision		Revision as of 17:00, 6 August 2024
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			{{stub}}{{wikify}}
	== chroot SSH Trick ==		== chroot SSH Trick ==
	This technique allows LabVIEW to run commands outside of its chroot on a LINX 3.0 (BBB or RPi2) target. This can be useful for interacting with commands that are unavailable inside the chroot like raspistill.		This technique allows LabVIEW to run commands outside of its chroot on a LINX 3.0 (BBB or RPi2) target. This can be useful for interacting with commands that are unavailable inside the chroot like raspistill.
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	4. At this point you can run commands from within the LV chroot in the system outside the chroot by running a command of the form ssh <root_user>@localhost <command>. For instance, if I wanted to check the version of the Debian operation system on a Raspberry Pi I would run ssh pi@localhost cat /etc/debian_version. These commands can be run in a LabVIEW VI by using the System Exec VI, so now you have a way to execute commands outside of the LV chroot.		4. At this point you can run commands from within the LV chroot in the system outside the chroot by running a command of the form ssh <root_user>@localhost <command>. For instance, if I wanted to check the version of the Debian operation system on a Raspberry Pi I would run ssh pi@localhost cat /etc/debian_version. These commands can be run in a LabVIEW VI by using the System Exec VI, so now you have a way to execute commands outside of the LV chroot.

			[[Category:LabVIEW for Linux]]
			[[Category:BeagleBoard]]
			[[Category:Raspberry Pi]]

NegentropicDev at 00:13, 8 July 2020

2020-07-08T00:13:34Z

← Older revision		Revision as of 00:13, 8 July 2020
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	This technique allows LabVIEW to run commands outside of its chroot on a LINX 3.0 (BBB or RPi2) target. This can be useful for interacting with commands that are unavailable inside the chroot like raspistill.		This technique allows LabVIEW to run commands outside of its chroot on a LINX 3.0 (BBB or RPi2) target. This can be useful for interacting with commands that are unavailable inside the chroot like raspistill.

	1. Install an ssh client to your chroot:		1. Install an ssh client to your chroot:<br>
	sudo schroot -r -c lv		* sudo schroot -r -c lv
	opkg update		* opkg update
	opkg install openssh-ssh		* opkg install openssh-ssh
	exit		* exit

	2. Configure pub key authentication so you don't have to type in a password interactively (Hint: This let's you use the ssh client from LabVIEW System Exec VI).		2. Configure pub key authentication so you don't have to type in a password interactively (Hint: This let's you use the ssh client from LabVIEW System Exec VI).
	ssh-keygen -t rsa		* ssh-keygen -t rsa<br> stick with the defaults when it prompts you, especially when it asks for the passphrase; we want an empty passphrase
	stick with the defaults when it prompts you, especially when it asks for the passphrase; we want an empty passphrase		* cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
	cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys		* sudo mkdir /srv/chroot/labview/root/.ssh
	sudo mkdir /srv/chroot/labview/root/.ssh		* sudo cp ~/.ssh/id_rsa* /srv/chroot/labview/root/.ssh/.
	sudo cp ~/.ssh/id_rsa* /srv/chroot/labview/root/.ssh/.

	3. Now log back into the chroot and run the ssh command once so that you can add localhost to the list of known hosts		3. Now log back into the chroot and run the ssh command once so that you can add localhost to the list of known hosts
	sudo schroot -r -c lv		* sudo schroot -r -c lv
	ssh root@localhost ls		* ssh root@localhost ls
	When prompted to add localhost to the list of known hosts, say yes		* When prompted to add localhost to the list of known hosts, say yes
	exit		* exit

	4. At this point you can run commands from within the LV chroot in the system outside the chroot by running a command of the form ssh <root_user>@localhost <command>. For instance, if I wanted to check the version of the Debian operation system on a Raspberry Pi I would run ssh pi@localhost cat /etc/debian_version. These commands can be run in a LabVIEW VI by using the System Exec VI, so now you have a way to execute commands outside of the LV chroot.		4. At this point you can run commands from within the LV chroot in the system outside the chroot by running a command of the form ssh <root_user>@localhost <command>. For instance, if I wanted to check the version of the Debian operation system on a Raspberry Pi I would run ssh pi@localhost cat /etc/debian_version. These commands can be run in a LabVIEW VI by using the System Exec VI, so now you have a way to execute commands outside of the LV chroot.

NegentropicDev at 00:12, 8 July 2020

2020-07-08T00:12:26Z

← Older revision		Revision as of 00:12, 8 July 2020
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	This technique allows LabVIEW to run commands outside of its chroot on a LINX 3.0 (BBB or RPi2) target. This can be useful for interacting with commands that are unavailable inside the chroot like raspistill.		This technique allows LabVIEW to run commands outside of its chroot on a LINX 3.0 (BBB or RPi2) target. This can be useful for interacting with commands that are unavailable inside the chroot like raspistill.

	# Install an ssh client to your chroot:		1. Install an ssh client to your chroot:
	sudo schroot -r -c lv		sudo schroot -r -c lv
	opkg update		opkg update
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	exit		exit

	# Configure pub key authentication so you don't have to type in a password interactively (Hint: This let's you use the ssh client from LabVIEW System Exec VI).		2. Configure pub key authentication so you don't have to type in a password interactively (Hint: This let's you use the ssh client from LabVIEW System Exec VI).
	ssh-keygen -t rsa		ssh-keygen -t rsa
	stick with the defaults when it prompts you, especially when it asks for the passphrase; we want an empty passphrase		stick with the defaults when it prompts you, especially when it asks for the passphrase; we want an empty passphrase
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	sudo cp ~/.ssh/id_rsa* /srv/chroot/labview/root/.ssh/.		sudo cp ~/.ssh/id_rsa* /srv/chroot/labview/root/.ssh/.

	# Now log back into the chroot and run the ssh command once so that you can add localhost to the list of known hosts		3. Now log back into the chroot and run the ssh command once so that you can add localhost to the list of known hosts
	sudo schroot -r -c lv		sudo schroot -r -c lv
	ssh root@localhost ls		ssh root@localhost ls
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	exit		exit

	#At this point you can run commands from within the LV chroot in the system outside the chroot by running a command of the form ssh <root_user>@localhost <command>. For instance, if I wanted to check the version of the Debian operation system on a Raspberry Pi I would run ssh pi@localhost cat /etc/debian_version. These commands can be run in a LabVIEW VI by using the System Exec VI, so now you have a way to execute commands outside of the LV chroot.		4. At this point you can run commands from within the LV chroot in the system outside the chroot by running a command of the form ssh <root_user>@localhost <command>. For instance, if I wanted to check the version of the Debian operation system on a Raspberry Pi I would run ssh pi@localhost cat /etc/debian_version. These commands can be run in a LabVIEW VI by using the System Exec VI, so now you have a way to execute commands outside of the LV chroot.

NegentropicDev: Created page with "== chroot SSH Trick == This technique allows LabVIEW to run commands outside of its chroot on a LINX 3.0 (BBB or RPi2) target. This can be useful for interacting with commands..."

2020-07-08T00:11:55Z

Created page with "== chroot SSH Trick == This technique allows LabVIEW to run commands outside of its chroot on a LINX 3.0 (BBB or RPi2) target. This can be useful for interacting with commands..."

New page

== chroot SSH Trick ==
This technique allows LabVIEW to run commands outside of its chroot on a LINX 3.0 (BBB or RPi2) target. This can be useful for interacting with commands that are unavailable inside the chroot like raspistill.

# Install an ssh client to your chroot:
sudo schroot -r -c lv
opkg update
opkg install openssh-ssh
exit

# Configure pub key authentication so you don't have to type in a password interactively (Hint: This let's you use the ssh client from LabVIEW System Exec VI).
ssh-keygen -t rsa
stick with the defaults when it prompts you, especially when it asks for the passphrase; we want an empty passphrase
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
sudo mkdir /srv/chroot/labview/root/.ssh
sudo cp ~/.ssh/id_rsa* /srv/chroot/labview/root/.ssh/.

# Now log back into the chroot and run the ssh command once so that you can add localhost to the list of known hosts
sudo schroot -r -c lv
ssh root@localhost ls
When prompted to add localhost to the list of known hosts, say yes
exit

#At this point you can run commands from within the LV chroot in the system outside the chroot by running a command of the form ssh <root_user>@localhost <command>. For instance, if I wanted to check the version of the Debian operation system on a Raspberry Pi I would run ssh pi@localhost cat /etc/debian_version. These commands can be run in a LabVIEW VI by using the System Exec VI, so now you have a way to execute commands outside of the LV chroot.