Try running this command from the directory where script is present.

On 11/07/2018 09:43, farial tavakoli wrote:
Dear gromacs users
I am trying to run a simulation on my complex which has small molecule as a ligand , 
using OPLSAA ff. so I downloaded the topolgen-1.1.tgz and then installed perl script on 
linux. then typed "perl -v" to check if it is installed. the perl 5.20.1 is 
but when I typed " perl -f input.pdb -o [-type itp/top] 
" command to generate ligand topology , faced with this error:
Can't open perl script "": No such file or directory
Is there anyone to  help me to figure out this problem?
Infact I am new user in generation topology for small molecules using OPLSAA ff.


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