pradip@pms-ubuntu-desktop:~$ export | grep -i foam
declare -x FOAM_APP="/opt/openfoam7/applications"
declare -x FOAM_APPBIN="/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin"
declare -x FOAM_ETC="/opt/openfoam7/etc"
declare -x FOAM_EXT_LIBBIN="/opt/ThirdParty-7/platforms/linux64GccDPInt32/lib"
declare -x FOAM_INST_DIR="/opt"
declare -x FOAM_JOB_DIR="/opt/jobControl"
declare -x FOAM_LIBBIN="/opt/openfoam7/platforms/linux64GccDPInt32Opt/lib"
declare -x FOAM_MPI="openmpi-system"
declare -x FOAM_RUN="/home/pradip/OpenFOAM/pradip-7/run"
declare -x FOAM_SETTINGS=""
declare -x FOAM_SIGFPE=""
declare -x FOAM_SITE_APPBIN="/opt/site/7/platforms/linux64GccDPInt32Opt/bin"
declare -x FOAM_SITE_LIBBIN="/opt/site/7/platforms/linux64GccDPInt32Opt/lib"
declare -x FOAM_SOLVERS="/opt/openfoam7/applications/solvers"
declare -x FOAM_SRC="/opt/openfoam7/src"
declare -x FOAM_TUTORIALS="/opt/openfoam7/tutorials"
declare -x FOAM_USER_APPBIN="/home/pradip/OpenFOAM/pradip-7/platforms/linux64GccDPInt32Opt/bin"
declare -x FOAM_USER_LIBBIN="/home/pradip/OpenFOAM/pradip-7/platforms/linux64GccDPInt32Opt/lib"
declare -x FOAM_UTILITIES="/opt/openfoam7/applications/utilities"
declare -x LD_LIBRARY_PATH="/opt/ThirdParty-7/platforms/linux64Gcc/gperftools-svn/lib:/opt/paraviewopenfoam56/lib/paraview-5.6:/opt/openfoam7/platforms/linux64GccDPInt32Opt/lib/openmpi-system:/opt/ThirdParty-7/platforms/linux64GccDPInt32/lib/openmpi-system:/usr/lib/x86_64-linux-gnu/openmpi/lib:/home/pradip/OpenFOAM/pradip-7/platforms/linux64GccDPInt32Opt/lib:/opt/site/7/platforms/linux64GccDPInt32Opt/lib:/opt/openfoam7/platforms/linux64GccDPInt32Opt/lib:/opt/ThirdParty-7/platforms/linux64GccDPInt32/lib:/opt/openfoam7/platforms/linux64GccDPInt32Opt/lib/dummy"
declare -x PATH="/opt/ThirdParty-7/platforms/linux64Gcc/gperftools-svn/bin:/opt/paraviewopenfoam56/bin:/home/pradip/OpenFOAM/pradip-7/platforms/linux64GccDPInt32Opt/bin:/opt/site/7/platforms/linux64GccDPInt32Opt/bin:/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin:/opt/openfoam7/bin:/opt/openfoam7/wmake:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin"
declare -x PV_PLUGIN_PATH="/opt/openfoam7/platforms/linux64GccDPInt32Opt/lib/paraview-5.6"
declare -x ParaView_DIR="/opt/paraviewopenfoam56"
declare -x ParaView_INCLUDE_DIR="/opt/paraviewopenfoam56/include/paraview-5.6"
declare -x WM_DIR="/opt/openfoam7/wmake"
declare -x WM_PROJECT="OpenFOAM"
declare -x WM_PROJECT_DIR="/opt/openfoam7"
declare -x WM_PROJECT_USER_DIR="/home/pradip/OpenFOAM/pradip-7"
pradip@pms-ubuntu-desktop:~$ which simplefoam
pradip@pms-ubuntu-desktop:~$