Dear experts, why the command chgsum.pl failed to sum up AECCAR0 and AECCAR2 out put files for calculating Bader charge transfer?

I submitted the job in the following different ways: 1) chgsum.pl AECCAR0 AECCAR2 resulted in "command not found" 2) chgsum.pl (AECCAR0) (AECCAR2)...resulted in "syntax error near unexpected...

07 February 2019 6,559 2 View