Linux :
- ubuntu/debian
# sudo apt-get install parallel -y
- centos
# sudo yum install parallel -y
Windows :
You can install WSL (windows subsystem linux) then do install like linux
* If you want use windows without installing WSL, install GitBash
# curl pi.dk/3/ > install.sh
# sha1sum install.sh | grep 12345678
# md5sum install.sh
# sha512sum install.sh
# bash install.sh