[gmx-users] DSSP problem

[Mark Abraham]

rituraj purohit wrote:
> Dear all
> I want ti install DSSP for visualization of secondary structure in
> gromacs analysis.
> I am doing following procedure..
> Copy the executable "dsspcmbi"  to /usr/bin or /usr/local/bin
>   ln -s dsspcmbi dssp
> And running it for my Pdb like that....
> dssp file.pdb file.dssp
> 
> BUt I am getting error "Permission Denied" even i m super user for the
> machine (root).
> 
> [root at localhost ~]# dssp
> bash: /usr/local/bin/dssp: Permission denied
> [root at localhost ~]#
> 
> Plaese any body tell the solution for this problem...

You may still need execute permissions on the original executable. You 
should not ever be running as root when not installing software or 
maintaining the system.

Mark