1#!/bin/sh
2#
3# $FreeBSD: stable/9/release/scripts/split-file.sh 134353 2004-08-26 19:15:20Z ru $
4#
5
6# Bail if things fail and be verbose about what we are doing
7set -ex
8
9# Arguments are as follows: file destdir chunksize description
10FILE=$1; shift
11DEST=$1; shift
12CHUNK_SIZE=$1; shift
13DESCR=$1; shift
14
15# Make sure we can read the file.
16[ -r ${FILE} ]
17
18# Create clean working area to stick file chunks and list in
19rm -rf ${DEST} || true
20mkdir -p ${DEST}
21
22# Split the file into pieces
23prefix=`basename $FILE`
24dd if=${FILE} bs=16k iseek=1 | split -b ${CHUNK_SIZE}k - ${DEST}/${prefix}.
25
26# Create a special file for the first 16k that gets stuck on the boot
27# floppy
28files=`ls ${DEST}/${prefix}.*`
29first=`echo "${files}" | head -1`
30bootchunk="${DEST}/${prefix}.boot"
31dd if=${FILE} of=${bootchunk} bs=16k count=1
32
33# Create the split index file
34echo `basename ${bootchunk}` "\"Boot floppy\"" > ${DEST}/${prefix}.split
35i=1
36for file in ${files}; do
37	echo `basename ${file}` "\"${DESCR} floppy ${i}\"" >> ${DEST}/${prefix}.split
38	i=$(($i + 1))
39done
40