usage and argument handling for bin/rm* and bin/touch* utilities

bin/rmclassall

 #!/bin/sh
-find . \( -name '*.class' \) -print | xargs -t rm
+
+# default is pwd
+if [ "$#" -eq 0 ]
+then
+   set -- .
+elif [ "$1" = "-h" -o "$1" = "-help" ]
+then
+   echo "Usage: ${0##*/} [dir1] .. [dirN]"
+   echo "    remove all .class files"
+   exit 1
+fi
+
+for i
+do
+   if [ -d "$i" ]
+   then
+      echo "removing all .class files"
+      find $i -name '*.class' -print | xargs -t rm
+   else
+      echo "no directory: $i"
+   fi
+done
+#------------------------------------------------------------------------------

bin/rmcore

 #!/bin/sh
-# find . \( -name 'core' \) -exec ls -l {} \; -exec rm {} \;
-find . \( -type f -name 'core' -o -name 'core.[1-9]*' -o -name 'vgcore.*' \) -print | xargs -t rm
+
+# default is pwd
+if [ "$#" -eq 0 ]
+then
+   set -- .
+elif [ "$1" = "-h" -o "$1" = "-help" ]
+then
+   echo "Usage: ${0##*/} [dir1] .. [dirN]"
+   echo "    remove all core files"
+   exit 1
+fi
+
+for i
+do
+   if [ -d "$i" ]
+   then
+      echo "removing all core files"
+      find $i \( -type f -name 'core' -o -name 'core.[1-9]*' -o -name 'vgcore.*' \) -print | xargs -t rm
+   else
+      echo "no directory: $i"
+   fi
+done
+#------------------------------------------------------------------------------
+

bin/rmdepall

 #!/bin/sh
 
-if [ $# -eq 0 ]
+if [ "$1" = "-h" -o "$1" = "-help" -o "$#" -gt 1 ]
 then
-   find . \( -name '*.dep' \) -print | xargs -t rm
-elif [ $# -eq 1 ]
+   echo "Usage: ${0##*/}         : remove all .dep files"
+   echo "       ${0##*/} <file>  : remove all .dep files referring to <file>"
+   exit 1
+fi
+
+if [ "$#" -eq 0 ]
 then
-   echo "Removing all dep files containing $1..."
-   find . -name '*.dep' -exec grep "$1" '{}' \; -exec rm '{}' \;
+   echo "removing all .dep files"
+   find . -name '*.dep' -print | xargs -t rm
 else
-   echo "Usage: ${0##/}        to remove all .dep files"
-   echo "       ${0##/} <file> to remove all .dep files referring to <file>"
-   exit 1
+   echo "removing all .dep files containing $1..."
+   find . -name '*.dep' -exec grep "$1" '{}' \; -exec rm '{}' \;
 fi
 
+#------------------------------------------------------------------------------

bin/rmoall

 #!/bin/sh
-find . \( -name '*.o' \) -print | xargs -t rm
+
+# default is pwd
+if [ "$#" -eq 0 ]
+then
+   set -- .
+elif [ "$1" = "-h" -o "$1" = "-help" ]
+then
+   echo "Usage: ${0##*/} [dir1] .. [dirN]"
+   echo "    remove all .o files"
+   exit 1
+fi
+
+for i
+do
+   if [ -d "$i" ]
+   then
+      echo "removing all .o files: $i"
+      find $i -name '*.o' -print | xargs -t rm
+   else
+      echo "no directory: $i"
+   fi
+done
+#------------------------------------------------------------------------------

bin/rm~all

 #!/bin/sh
-# find . \( -name '*~' -o -name '.*~'  \) -exec ls -l {} \; -exec rm {} \;
-find . \( -name '*~' -o -name '.*~' \) -print | xargs -t rm
+
+# default is pwd
+if [ "$#" -eq 0 ]
+then
+   set -- .
+elif [ "$1" = "-h" -o "$1" = "-help" ]
+then
+   echo "Usage: ${0##*/} [dir1] .. [dirN]"
+   echo "    remove all *~ files"
+   exit 1
+fi
+
+for i
+do
+   if [ -d "$i" ]
+   then
+      echo "removing all *~ files"
+      find $i \( -name '*~' -o -name '.*~' \) -print | xargs -t rm
+   else
+      echo "no directory: $i"
+   fi
+done
+#------------------------------------------------------------------------------

bin/touchapp

 #!/bin/sh
 
-touch $FOAM_APPBIN/*
+if [ "$#" -ne 0 ]
+then
+   echo "Usage: ${0##*/}"
+   echo "    touch FOAM_APPBIN"
+   exit 1
+fi
+
+if [ -d "$FOAM_APPBIN" ]
+then
+   echo "touching FOAM_APPBIN: $FOAM_APPBIN"
+   touch $FOAM_APPBIN/*
+else
+   echo "no FOAM_APPBIN: $FOAM_APPBIN"
+fi
+#------------------------------------------------------------------------------

bin/touchdep

 #!/bin/sh
 
-find . \( -name '*.dep' \) -print | xargs -t touch
+# default is pwd
+if [ "$#" -eq 0 ]
+then
+   set -- .
+elif [ "$1" = "-h" -o "$1" = "-help" ]
+then
+   echo "Usage: ${0##*/} [dir1] .. [dirN]"
+   echo "    touch all .dep files"
+   exit 1
+fi
+
+for i
+do
+   if [ -d "$i" ]
+   then
+      echo "touching all .dep files: $i"
+      find $i -name '*.dep' -print | xargs -t touch
+   else
+      echo "no directory: $i"
+   fi
+done
+#------------------------------------------------------------------------------

bin/touchlib

 #!/bin/sh
 
-touch $FOAM_LIBBIN/*
+if [ "$#" -ne 0 ]
+then
+   echo "Usage: ${0##*/}"
+   echo "    touch FOAM_LIBBIN"
+   exit 1
+fi
+
+if [ -d "$FOAM_LIBBIN" ]
+then
+   echo "touching FOAM_LIBBIN: $FOAM_LIBBIN"
+   touch $FOAM_LIBBIN/* $FOAM_LIBBIN/*/*
+else
+   echo "no FOAM_LIBBIN: $FOAM_LIBBIN"
+fi
+#------------------------------------------------------------------------------

bin/toucho

 #!/bin/sh
 
-find . \( -name '*.o' \) -print | xargs -t touch
+# default is pwd
+if [ "$#" -eq 0 ]
+then
+   set -- .
+elif [ "$1" = "-h" -o "$1" = "-help" ]
+then
+   echo "Usage: ${0##*/} [dir1] .. [dirN]"
+   echo "    touch all .o files"
+   exit 1
+fi
+
+for i
+do
+   if [ -d "$i" ]
+   then
+      echo "touching all .o files: $i"
+      find $i -name '*.o' -print | xargs -t touch
+   else
+      echo "no directory: $i"
+   fi
+done
+#------------------------------------------------------------------------------