Install GNU Parallel on any system including Cygwin

setup_gnuparallel.sh

#!/bin/bash

# useful for platforms such as Cygwin that don't currently have GNU Parallel in their repo.
# prerequisite: make

(
wd=$(mktemp -d)
wget -nc -P $wd ftp://ftp.gnu.org/gnu/parallel/parallel-latest.tar.bz2

cd $wd
tar -xf parallel-latest.tar.bz2
cd parallel-*
./configure && make && make install
)

How would I run this in Git Bash?

I have not tried this on Windows Git Bash. Perhaps consider Windows Subsystem for Linux

Try:

$ (wget -O - pi.dk/3 || lynx -source pi.dk/3 || curl pi.dk/3/ || \
   fetch -o - http://pi.dk/3 ) > install.sh
$ sha1sum install.sh | grep 67bd7bc7dc20aff99eb8f1266574dadb
12345678 67bd7bc7 dc20aff9 9eb8f126 6574dadb
$ md5sum install.sh | grep b7a15cdbb07fb6e11b0338577bc1780f
b7a15cdb b07fb6e1 1b033857 7bc1780f
$ sha512sum install.sh | grep 186000b62b66969d7506ca4f885e0c80e02a22444
6f25960b d4b90cf6 ba5b76de c1acdf39 f3d24249 72930394 a4164351 93a7668d
21ff9839 6f920be5 186000b6 2b66969d 7506ca4f 885e0c80 e02a2244 40e8a43f
$ bash install.sh

It should work in Microsoft Windows Git Bash, too.

Wget is not available on git bash so that command also fails

I moved this to https://gist.github.com/scivision/a83bb62e3f1cdfc379223370af04e915

Wget is not available on git bash so that command also fails

MINGW (and therefore git-bash) has wget available for install:

• try running /c/MinGW/bin/mingw-get.exe in git bash and it should open the MinGW Installation Manager
• scroll down to "msys-wget" and right click the one with Class "bin"
• select "Mark for Installation"
• on the top click "Installation"
• select "Apply Changes"
• click "Apply"
• close the install manager, restart git-bash, and try running wget

It is unclear to me why @scotty6435 believes the command will fail just because wget is not installed:

(wget -O - pi.dk/3 || lynx -source pi.dk/3 || curl pi.dk/3/ || fetch -o - http://pi.dk/3 ) > install.sh

As long as you have just one of wget, lynx,curl, or fetch installed it should work just fine.