1. Create a working directory

mkdir -p /mnt/hdxx/directory1

2. Install all software packages using this directory as root:

installpkg --root=/mnt/hdxx/directory1 packagea-x.x.x.txz

installpkg –-root=/mnt/hdxx/directory1 packageb-x.x.x.txz

installpkg –-root=/mnt/hdxx/directory1 packagec-x.x.x.txz

etc.

3. Remove all unneeded files:

rm -rf /mnt/hdxx/directory1/usr/doc/*

4. Make any modifications you want:

echo "whatever" > /mnt/hdxx/directory1/foo/bar

5. Build the module:

cd /mnt/hdxx/

dir2lzm directory1 module1.lzm