make module search path commands consistent

tools/swig/run_java_example.sh

@@ -48,8 +48,8 @@ public class example {
 }
 EOF
 
-CLASSPATH=$PWD:${CLASSPATH-${PWD}}
-LD_LIBRARY_PATH=$PWD:${LD_LIBARARY_PATH-${PWD}}
+CLASSPATH=${PWD}:${CLASSPATH-${PWD}}
+LD_LIBRARY_PATH=${PWD}:${LD_LIBARARY_PATH-${PWD}}
 
 export CLASSPATH LD_LIBRARY_PATH
 

tools/swig/run_lua_example.sh

@@ -18,7 +18,7 @@ print("LAMMPS includes ", npair_styles, " pair styles")
 -- this also does not work (see above)
 -- for i = 0, 10, 1 do
 --    res = lualammps.lammps_style_name(lmp, 'pair', i, 128)
---    print("Pair style ",i, ': ', res[1])   
+--    print("Pair style ",i, ': ', res[1])
 -- end
 
 lualammps.lammps_command(lmp, "units real")

tools/swig/run_perl_example.sh

@@ -53,7 +53,7 @@ print "Current size of timestep: ", pllammps::double_p_value(pllammps::void_p_to
 pllammps::lammps_close(\$lmp)
 EOF
 
-PERL5LIB=$PWD:${PERL5LIB-PWD}
+PERL5LIB=${PWD}:${PERL5LIB-${PWD}}
 
 export PERL5LIB
 

tools/swig/run_python_example.sh

@@ -50,8 +50,8 @@ print("Current size of timestep: %g" % double_p_value(void_p_to_double_p(lammps_
 lammps_close(lmp)
 EOF
 
-PYTHONPATH=$PWD:${PYTHON_PATH-PWD}
+PYTHONPATH=${PWD}:${PYTHONPATH-${PWD}}
 
-export PYTHON_PATH
+export PYTHONPATH
 
 python example.py

tools/swig/run_ruby_example.sh

@@ -53,5 +53,5 @@ print('Current size of timestep: ', Rubylammps.double_p_value(Rubylammps.void_p_
 Rubylammps.lammps_close(lmp)
 EOF
 
-export RUBYLIB=$PWD:${RUBYLIB-${PWD}}
+export RUBYLIB=${PWD}:${RUBYLIB-${PWD}}
 ruby example.rb