ermanno@easynote:~$ cd GAMS/
ermanno@easynote:~/GAMS$ ls
gamsinst  gamsinst.log  gamsunpack  gams.zip  gmsunzip  lx3gams_sfx.exe
ermanno@easynote:~/GAMS$ ./gamsinst


gamsinst version 034
====================
Installation of GAMS distribution 22.3

Continue? (Y/N) y


Unpacking GAMS ...
   estimated disk blocks needed : 20480, available : 4994039
   executing--> ./gamsunpack
sh: ./gamsunpack: not found
Error running unpacking script ./gamsunpack
Aborting...
ermanno@easynote:~/GAMS$