postinst is in prism2-usb-firmware-installer 0.2.9+dfsg-5.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | #!/bin/sh -e
UPSTREAM='http://git.shaftnet.org/git/gitweb.cgi?p=linux-wlan-ng.git;a=blob_plain;f=src/prism2/ru010803.hex;hb=HEAD'
HEXFILE=/lib/firmware/ru010803.hex
FWFILE=/lib/firmware/ru010803.fw
checkfile () {
md5sum --check <<- EOMD5SUM
3eba76f7e3a10d64071b1822a229f49e $HEXFILE
EOMD5SUM
}
# Fetch firmware if needed
if [ ! -s $HEXFILE ] || ! checkfile ; then
rm -f $HEXFILE
wget -O $HEXFILE $UPSTREAM || cat <<- EOMSG 1>&2
Warning: Failed to download firmware for prism2-usb.
Please run "dpkg-reconfigure prism2-usb-firmware-installer"
again when networking is up, or copy the firmware manually
to $HEXFILE
and rerun the command to convert the firmware.
EOMSG
fi
# Convert from SREC format (.hex) to kernel (.fw)
if [ -s $HEXFILE ] && checkfile ; then
echo Converting firmware file
/usr/bin/srec2fw $HEXFILE $FWFILE
fi
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