Radix cross Linux

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