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--- update-usbids.sh
+++ update-usbids.sh
@@ -2,12 +2,22 @@
# see also update-pciids.sh (fancier)
+[ "$1" = "-q" ] && quiet="true" || quiet="false"
+
set -e
SRC="http://www.linux-usb.org/usb.ids"
DEST=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 ; then
DL="wget -O $DEST.new $SRC"
+ ${quiet} && DL="$DL -q"
elif which lynx >/dev/null ; then
DL="eval lynx -source $SRC >$DEST.new"
else
@@ -33,4 +43,4 @@
fi
mv $DEST.new $DEST
-echo "Done."
+${quiet} || echo "Done."
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