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- #!/bin/sh
-
- # see also update-pciids.sh (fancier)
-
- [ "$1" = "-q" ] && quiet="true" || quiet="false"
-
- set -e
- SRC="http://www.linux-usb.org/usb.ids"
- DEST=/var/lib/misc/usb.ids
-
- # if usb.ids is read-only (because the filesystem is read-only),
- # then just skip this whole process.
- if ! touch ${DEST} >&2 >/dev/null ; then
- ${quiet} || echo "${DEST} is read-only, exiting."
- exit 0
- fi
-
- if which wget >/dev/null 2>&1 ; then
- DL="wget -O $DEST.new $SRC"
- ${quiet} && DL="$DL -q"
- elif which lynx >/dev/null 2>&1 ; then
- DL="eval lynx -source $SRC >$DEST.new"
- else
- echo >&2 "update-usbids: cannot find wget nor lynx"
- exit 1
- fi
-
- if ! $DL ; then
- echo >&2 "update-usbids: download failed"
- rm -f $DEST.new
- exit 1
- fi
-
- if ! grep >/dev/null "^C " $DEST.new ; then
- echo >&2 "update-usbids: missing class info, probably truncated file"
- exit 1
- fi
-
- if [ -f $DEST ] ; then
- mv $DEST $DEST.old
- # --reference is supported only by chmod from GNU file, so let's ignore any errors
- chmod -f --reference=$DEST.old $DEST.new 2>/dev/null || true
- fi
- mv $DEST.new $DEST
-
- ${quiet} || echo "Done."
-