diff --git a/src/GPU/Package.sh b/src/GPU/Package.sh
deleted file mode 100644
index cdac230d51..0000000000
--- a/src/GPU/Package.sh
+++ /dev/null
@@ -1,131 +0,0 @@
-# Update package files in LAMMPS
-# cp package file to src if doesn't exist or is different
-# do not copy dependent files if non-GPU version does not exist
-
-for file in *.cpp *.h; do
-  if (test $file = pair_gayberne_gpu.cpp -a ! -e ../pair_gayberne.cpp) then
-    continue
-  fi
-  if (test $file = pair_gayberne_gpu.h -a ! -e ../pair_gayberne.cpp) then
-    continue
-  fi
-  if (test $file = pair_resquared_gpu.cpp -a ! -e ../pair_resquared.cpp) then
-    continue
-  fi
-  if (test $file = pair_resquared_gpu.h -a ! -e ../pair_resquared.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_cut_coul_long_gpu.cpp -a ! -e ../pair_lj_cut_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_cut_coul_long_gpu.h -a ! -e ../pair_lj_cut_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_coul_long_gpu.cpp -a ! -e ../pair_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_coul_long_gpu.h -a ! -e ../pair_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_sdk_gpu.cpp -a ! -e ../pair_lj_sdk.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_sdk_gpu.h -a ! -e ../pair_lj_sdk.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_sdk_coul_long_gpu.cpp -a ! -e ../pair_lj_sdk_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_sdk_coul_long_gpu.h -a ! -e ../pair_lj_sdk_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_dipole_sf_gpu.cpp -a ! -e ../pair_dipole_sf.cpp) then
-    continue
-  fi
-  if (test $file = pair_dipole_sf_gpu.h -a ! -e ../pair_dipole_sf.cpp) then
-    continue
-  fi
-  if (test $file = pair_dipole_cut_gpu.cpp -a ! -e ../pair_dipole_cut.cpp) then
-    continue
-  fi
-  if (test $file = pair_dipole_cut_gpu.h -a ! -e ../pair_dipole_cut.cpp) then
-    continue
-  fi
-  if (test $file = pair_yukawa_colloid_gpu.cpp -a ! -e ../pair_yukawa_colloid.cpp) then
-    continue
-  fi
-  if (test $file = pair_yukawa_colloid_gpu.h -a ! -e ../pair_yukawa_colloid.cpp) then
-    continue
-  fi
-  if (test $file = pair_colloid_gpu.cpp -a ! -e ../pair_colloid.cpp) then
-    continue
-  fi
-  if (test $file = pair_colloid_gpu.h -a ! -e ../pair_colloid.cpp) then
-    continue
-  fi
-  if (test $file = pair_born_coul_long_gpu.cpp -a ! -e ../pair_born_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_born_coul_long_gpu.h -a ! -e ../pair_born_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_buck_coul_long_gpu.cpp -a ! -e ../pair_buck_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_buck_coul_long_gpu.h -a ! -e ../pair_buck_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_born_coul_long_gpu.cpp -a ! -e ../pair_born_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_born_coul_long_gpu.h -a ! -e ../pair_born_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_gpu.cpp -a ! -e ../pair_eam.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_gpu.h -a ! -e ../pair_eam.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_alloy_gpu.cpp -a ! -e ../pair_eam_alloy.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_alloy_gpu.h -a ! -e ../pair_eam_alloy.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_fs_gpu.cpp -a ! -e ../pair_eam_fs.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_fs_gpu.h -a ! -e ../pair_eam_fs.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_class2_gpu.cpp -a ! -e ../pair_lj_class2.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_class2_coul_long_gpu.cpp -a ! -e ../pair_lj_class2_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_class2_coul_long_gpu.h -a ! -e ../pair_lj_class2_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_charmm_coul_long_gpu.cpp -a ! -e ../pair_lj_charmm_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_charmm_coul_long_gpu.h -a ! -e ../pair_lj_charmm_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pppm_gpu.cpp -a ! -e ../pppm.cpp) then
-    continue
-  fi
-  if (test $file = pppm_gpu.h -a ! -e ../pppm.cpp) then
-    continue
-  fi
-  
-  if (test ! -e ../$file) then
-    echo "  creating src/$file"
-    cp $file ..
-  elif (test "`diff --brief $file ../$file`" != "") then
-    echo "  updating src/$file"
-    cp $file ..
-  fi
-done
diff --git a/src/OPT/Package.sh b/src/OPT/Package.sh
deleted file mode 100644
index 5fb182c0f9..0000000000
--- a/src/OPT/Package.sh
+++ /dev/null
@@ -1,50 +0,0 @@
-# Update package files in LAMMPS
-# cp package file to src if doesn't exist or is different
-# do not copy dependent files if non-OPT versions do not exist
-
-for file in *.cpp *.h; do
-  if (test $file = pair_eam_opt.cpp -a ! -e ../pair_eam.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_opt.h -a ! -e ../pair_eam.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_alloy_opt.cpp -a ! -e ../pair_eam.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_alloy_opt.h -a ! -e ../pair_eam.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_fs_opt.cpp -a ! -e ../pair_eam.cpp) then
-    continue
-  fi
-  if (test $file = pair_eam_fs_opt.h -a ! -e ../pair_eam.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_charmm_coul_long_opt.cpp -a ! -e ../pair_lj_charmm_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_charmm_coul_long_opt.h -a ! -e ../pair_lj_charmm_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_cut_coul_long_opt.cpp -a ! -e ../pair_lj_cut_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_cut_coul_long_opt.h -a ! -e ../pair_lj_cut_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_cut_coul_long_tip4p_opt.cpp -a ! -e ../pair_lj_cut_coul_long_tip4p.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_cut_coul_long_tip4p_opt.h -a ! -e ../pair_lj_cut_coul_long_tip4p.cpp) then
-    continue
-  fi
-
-  if (test ! -e ../$file) then
-    echo "  creating src/$file"
-    cp $file ..
-  elif (test "`diff --brief $file ../$file`" != "") then
-    echo "  updating src/$file"
-    cp $file ..
-  fi
-done
diff --git a/src/Package.sh b/src/Package.sh
index 78b7b7a10b..7e8243a1b0 100644
--- a/src/Package.sh
+++ b/src/Package.sh
@@ -42,19 +42,14 @@ if (test $2 = "status") then
 elif (test $2 = "update") then
   echo "Updating src files from $1 package files"
   if (test $installed = 1) then
-    if (test ! -e Package.sh) then
-      for file in *.cpp *.h; do
-        if (test ! -e ../$file) then
-          echo "  creating src/$file"
-          cp $file ..
-        elif (test "`diff --brief $file ../$file`" != "") then
-          echo "  updating src/$file"
-          cp $file ..
-        fi
-      done
-    else
-      /bin/sh Package.sh
-    fi
+    for file in *.cpp *.h; do
+      if (test ! -e ../$file) then
+        continue
+      elif (test "`diff --brief $file ../$file`" != "") then
+        echo "  updating src/$file"
+        cp $file ..
+      fi
+    done
   else
     echo "  $1 package is not installed, no action"
   fi
@@ -69,7 +64,7 @@ elif (test $2 = "overwrite") then
   if (test $installed = 1) then
     for file in *.cpp *.h; do
       if (test ! -e ../$file) then
-        echo "  src/$file does not exist"
+        continue
       elif (test "`diff --brief $file ../$file`" != "") then
         echo "  overwriting $1/$file"
         cp ../$file .
diff --git a/src/USER-CG-CMM/Package.sh b/src/USER-CG-CMM/Package.sh
deleted file mode 100644
index 6f481d6639..0000000000
--- a/src/USER-CG-CMM/Package.sh
+++ /dev/null
@@ -1,44 +0,0 @@
-# Update package files in LAMMPS
-# cp package file to src if doesn't exist or is different
-# do not copy molecular and kspace files if corresponding versions do not exist
-
-for file in *.cpp *.h; do
-  if (test $file = angle_cg_cmm.cpp -a ! -e ../angle_harmonic.cpp) then
-    continue
-  fi
-  if (test $file = angle_cg_cmm.h -a ! -e ../angle_harmonic.h) then
-    continue
-  fi
-  if (test $file = pair_cg_cmm_coul_long.cpp -a ! -e ../pair_lj_cut_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_cg_cmm_coul_long.h -a ! -e ../pair_lj_cut_coul_long.h) then
-    continue
-  fi
-  if (test $file = angle_sdk.cpp -a ! -e ../angle_harmonic.cpp) then
-    continue
-  fi
-  if (test $file = angle_sdk.h -a ! -e ../angle_harmonic.h) then
-    continue
-  fi
-  if (test $file = pair_lj_sdk_coul_long.cpp -a ! -e ../pair_lj_cut_coul_long.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_sdk_coul_long.h -a ! -e ../pair_lj_cut_coul_long.h) then
-    continue
-  fi
-  if (test $file = pair_lj_sdk_coul_msm.cpp -a ! -e ../pair_lj_cut_coul_msm.cpp) then
-    continue
-  fi
-  if (test $file = pair_lj_sdk_coul_msm.h -a ! -e ../pair_lj_cut_coul_msm.h) then
-    continue
-  fi
-
-  if (test ! -e ../$file) then
-    echo "  creating src/$file"
-    cp $file ..
-  elif (test "`diff --brief $file ../$file`" != "") then
-    echo "  updating src/$file"
-    cp $file ..
-  fi
-done
diff --git a/src/USER-MOLFILE/Package.sh b/src/USER-MOLFILE/Package.sh
deleted file mode 100644
index 3f6db2b877..0000000000
--- a/src/USER-MOLFILE/Package.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-# Update package files in LAMMPS
-# copy package file to src if it doesn't exists or is different
-
-for file in molfile_interface.cpp molfile_interface.h molfile_plugin.h \
-    dump_molfile.cpp dump_molfile.h reader_molfile.h reader_molfile.cpp \
-    vmdplugin.h ; do \
-  if (test ! -e ../$file) then
-    echo "  creating src/$file"
-    cp $file ..
-  elif ! cmp -s $file ../$file ; then
-    echo "  updating src/$file"
-    cp $file ..
-  fi
-done
-
diff --git a/src/USER-OMP/Package.sh b/src/USER-OMP/Package.sh
deleted file mode 100644
index 22c3994513..0000000000
--- a/src/USER-OMP/Package.sh
+++ /dev/null
@@ -1,39 +0,0 @@
-# Update package files in LAMMPS
-# Copy package file to src if it doesn't exists or is different.
-# But only copy the file, if a non-OpenMP version exists and
-# remove OpenMP versions that have no matching serial file
-# installed, e.g. after a package has been removed.
-for file in *_omp.cpp *_omp.h ; do
-  # these are special cases and handled below
-  if (test $file = "thr_omp.h") || (test $file = "thr_omp.cpp") then
-    continue
-  fi
-  # derive name of non-OpenMP version
-  ofile=`echo $file | sed  -e 's,\(.*\)_omp\.h,\1.h,' -e 's,\(.*\)_omp\.cpp,\1.cpp,'`
-  if (test ! -e ../$ofile) then
-    if (test -e ../$file) then
-      echo "  removing src/$file"
-      rm -f ../$file
-    fi
-  else
-    if (test ! -e ../$file) then
-      echo "  creating src/$file"
-      cp $file ..
-    elif ! cmp -s $file ../$file ; then
-      echo "  updating src/$file"
-      cp $file ..
-    fi
-  fi
-done
-
-# special case for files not covered by the automatic script above
-for file in thr_data.h thr_data.cpp thr_omp.h thr_omp.cpp; do
-  if (test ! -e ../$file) then
-    echo "  creating src/$file"
-    cp $file ..
-  elif ! cmp -s $file ../$file ; then
-    echo "  updating src/$file"
-    cp $file ..
-  fi
-done
-