How to generate Fragment file with pair of connections listed

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helloworld
How to generate Fragment file with pair of connections listed

Hi,

Does anyone know where I can find the fragment file where pair wise connections of the atoms are listed ? Is the .c format file same as fragment file?

I use this command to get my .c coordinate file plus I also get a psf and pdb file generated. But in this .c file I cannot find pair wise connectivities.
I wanted to delete and add a few connections.

"charmm.preinit charmm_script= all.charmm coords= ${sys_name_id}.c \
executable=/global/charmm-41b2/bin/charmm"

Thank you.