/usr/share/gromacs/shell-specific/GMXRC is in gromacs-data 2018.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | # This is a convenience script to determine which
# type of shell you have, and then run GMXRC.[csh|bash|zsh]
# from the Gromacs binary directory.
#
# If you only use one shell you can copy that GMXRC.* instead.
# only csh/tcsh set the variable $shell (note: lower case!)
# but check for the contents to be sure, since some environments may
# set it also for other shells
echo $shell | grep -q csh && goto CSH
# if we got here, shell is bsh/bash/zsh/ksh
. /usr/bin/GMXRC.bash
return
# csh/tcsh jump here
CSH:
source /usr/bin/GMXRC.csh
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