Hi Sir,
Thank you for your quick reply.
I followed the instructions as you've mentioned but when I typed find_pair -h or ./find_pair -h the following messages were displayed.
Also when I saved setenv X3DNA '/home/xiangjun/x3dna-v2.1'
setenv PATH '/home/xiangjun/x3dna-v2.1/bin':$PATH in .cshrc file and entered source ~/.cshrc, these messages were displayed.
No command 'setenv' found, did you mean:
Command 'netenv' from package 'netenv' (universe)
setenv: command not found
Can you please help me with that??