Download focal's packages ubuntu's package site.
The list:
- ca-certificates-java_20190405ubuntu1_all.deb
- default-jre-headless_1.11-72_amd64.deb
- java-common_0.72_all.deb
- libapache-pom-java_18-1_all.deb
- libbcprov-java_1.61-1_all.deb
- libcommons-lang3-java_3.8-2_all.deb
- libcommons-parent-java_43-1_all.deb
- openjdk-11-jre-headless_11.0.10+9-0ubuntu1~20.04_amd64.deb
- pdftk-java_3.0.9-1_all.deb
- pdftk_2.02-5_amd64.deb
We need java, too. I got java-10.0.2-x64.sfs from puppy linux's packges site.
pkg2sfs.sh can be gotton from deb2sfs.sh - deb(Debianパッケージ)をsfs(SquashFS)に変換するシェルスクリプト / Puppy linux 日本語フォーラム .
Convert them to a sfs with pkg2sfs.sh.
Unpack sfs and rename execute file.
# unsquashfs pdftk-2.02.5-x64.sfs
# mv /usr/bin/pdftk.pdftk-java /usr/bin/pdftk
# mksquashfs squash-root pdftk-2.02.5-x64.sfs
Load it and java with sfs on the fly.
