xmlstarlet update an attribute

Question

I\'m working on a script which deals with an xml file. I\'d like to update an attribute value in this xml file with xmlstarlet but it doesn\'t work.

Here is a sample

Answer 1

The proper way (will update settings on the fly)

xfconf-query -c xfce4-keyboard-shortcuts -p /commands/default/XF86Display -s 'test'

Answer 2

This works for me (the root is <channel>; attribute values quoted):

xmlstarlet edit \
  --update "/channel[@name='xfce4-keyboard-shortcuts']/property[@name='commands']/property[@name='custom']/property[@name='XF86Display']/@value" \
  --value  "test" xfce4-keyboard-shortcuts.xml

Or simpler:

xmlstarlet edit \
  --update "//property[@name='XF86Display']/@value" \
  --value "test" xfce4-keyboard-shortcuts.xml