added hint for commands

#!/bin/bash

echo "===================== prepare for installation ====================="

echo " > whoami"

whoami

echo " > uname -a"

uname -a

echo " > pwd"

pwd

echo " > ls -a"

ls -a

# define environment variables

export CSST_SIMS_C5_2="/nfsdata/share/csst_simulation_data/Cycle-5-SimuData/"

export AUX_DIR="/nfsdata/users/csstpipeline/L1Pipeline/unittests/"

echo "Python executor and version"

echo " > which python"

which python

echo " > which pip"

which pip

echo " > python --version"

python --version

echo "===================== isntall requirements ====================="