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** a '''printer inside''' the /dev/usb directory: <code>crw-rw---- 1 root lp 180, 0 Nov 28 14:14 lp0</code>
** a '''bus/usb''' directory
** '''many directories''' in bus/usb: named with the bus numer number that you got with the first lsusb command. In this example the relevant one is '''008'''
** in the numbered subdirectory '''1 file for every usb device attached to this bus''', the first one is the usb port:
***<code>crw-rw-r-- 1 root usb 189, 896 Nov 24 16:16 001</code>
***<code>crw-rw-r-- 1 root usb 189, 900 Nov 28 14:14 005</code>
* Now that you have an idea fo of the general structure of your usb devices you have to replicate them on your VE.
** enter your VE: <code>vzctl enter VE_NUMBER</code>
** create in /dev (if not present) the usb directory
**** check with <code>ls -l lp0</code> if the new device is '''IDENTICAL''' to the one in HN --> <code>crw-rw---- 1 root lp 180, 0 Nov 27 13:51 lp0</code>
** go back to /dev and create a symlink to the printer device: <code>ln -s /dev/usb/lp0 /dev/usblp0</code>
** create all the needded needed directories:
*** <code>mkdir /dev/bus</code>
*** <code>mkdir /dev/bus/usb</code>
*** <code>mkdir /dev/bus/usb/008</code>
** swith switch to /dev/bus/usb/008 directory and create there the needed devices: one for the usb port and one for the printer
*** <code>mknod 001 c 189 896</code>
*** <code>mknod 005 c 189 900</code>
***<code>crw-rw-r-- 1 root usb 189, 896 Nov 27 13:29 001</code>
***<code>crw-rw-r-- 1 root usb 189, 900 Nov 27 13:30 005</code>
* '''Doublechek Doublecheck everything!'''
* Now edit your VE_NUMBER.conf adding this line: <code>DEVICES="c:180:0:rw c:189:896:rw c:189:900:rw"</code>
** These are the devices replicated in the VE with mknod.
* Start cups and access it via your browser
* You should be able to see the printer attached to the usb port
== Sample bash shell script for compute vzctl command for dynamically assigning some devices to one VZ ==
Be care, the command <code>vzctl set xxx --devices "dddd" --devnodes "nnnn" --save</code> will reassign
the entire list of devices shared to one VZ, even suppressing some already presents.
<code>
#!/bin/bash
VZ=1234
DEVICES="[bB]luetooth|[pP]rinter"
VZDEV=""
VZNOD=""
while read A B C D E;do
if [[ "$E" =~ (${DEVICES}) ]] ;then
BUS=${B#0} DEV=${D%:}
BUS=${B#0} DEV=${DEV#0}
DEV=${DEV#0}
VZDEV="$VZDEV c:189:$(((BUS-1)*128+DEV-1)):rw"
VZNOD="$VZNOD bus/usb/$B/${D}rw"
fi
done < <(lsusb)
printf "DEVICES=\"%s\"\n" "${VZDEV# }"
printf "DEVNODES=\"%s\"\n" "${VZNOD# }"
printf "vzctl set %d --devices '%s' --devnodes '%s' --save\n" $VZ "${VZDEV# }" "${VZNOD# }"
</code>
[[Category:HOWTO]]