问题
I am working on an install script for a program that needs the device id from lsusb in it's configuration so I was thinking of doing the following:
$usblist=(lsusb)
#put the list into a array for each line.
#use the array to give the user a selection list usinging whiptail.
#from that line strip out the device id and vender id from the selected line.
Sorry I haven't gotten very far with my code but I am stuck on this and have no idea how to do what I would like to do. Please can someone help. I am very new to shell scripting
回答1:
Using whiptail
for choosing USB device
For preparing whiptail
or dialog
command, with USB ID as TAG and description as item, you could create a little sub-shell:
read usbdev < <(
declare -a array=()
while read foo{,,,,} id dsc;do
array+=($id "$dsc")
done < <(lsusb)
whiptail --menu 'Select USB device' 20 76 12 "${array[@]}" 2>&1 >/dev/tty
)
Nota:
- The
$array
variable won't exist outside of the scope of subshell. - As
$array
is populated by($id "$dsc")
and used by"${array[@]}"
, space in description won't break item list. - syntax
read foo{,,,} id dsc
will read output oflsub
by line, space separated, dropping 5 first words, assigning 6th word toid
and rest of line todsc
.
This could render something like:
Then
echo $usbdev
1d6b:0002
You could find more sample using whiptail
, dialog
and other ways at How do I prompt for Yes/No/Cancel input in a Linux shell script?
and USB removable storage selector: USBKeyChooser
回答2:
To extract the device IDs from lsusb
, the following line can be used:
lsusb | awk '{ print $6 }'
If you need to store the IDs within an array, use the line below:
mapfile -t device_ids < <(lsusb | awk '{ print $6 }')
Accessing the first element in the device_ids
array: echo ${device_ids[0]}
来源:https://stackoverflow.com/questions/50560500/linux-shell-get-device-id-from-user-input