some problem with the sh extraction script on Debian Lenny
downloaded the sh script
sh won’t run the script for some reason ?
running the script with bin/bash works but i got the error
awk unity-editor-installer-5.5.3xf1Linux.sh (Value too large for defined data type)
problem solved this way:
used head to read beginning of the file
head -n 70 unity-editor-installer-5.5.3xf1Linux.sh
split the file into smaller chunks with split
read the starting byte of the archive using awk on the the first chunck
extracted it manually
not sure why awk is complaining about this, but yeah…a lot of trouble to just extract an archive
perhaps this helps anyone,
preferably unity devs to improve the sh script 
greetings
Rob