Scripts in bin: added -help and -0 on xargs

bin/rmcore

@@ -29,24 +29,36 @@
 #     remove all core files
 #------------------------------------------------------------------------------
 
+usage() {
+    cat<<USAGE
+Usage: ${0##*/} [OPTIONS] [dir1] .. [dirN]
+options:
+    -help | -h         help
+
+Remove all core files
+USAGE
+}
+
 # default is pwd
 if [ "$#" -eq 0 ]
 then
     set -- .
 elif [ "$1" = "-h" -o "$1" = "-help" ]
 then
-    echo "Usage: ${0##*/} [dir1] .. [dirN]"
-    echo "    remove all core files"
-    exit 1
+    usage && exit 0
 fi
 
-
 for i
 do
     if [ -d "$i" ]
     then
         echo "removing all core files: $i"
-        find $i \( -type f -name 'core' -o -name 'core.[1-9]*' -o -name 'vgcore.*' \) -print0 | xargs -t rm 2>/dev/null
+        find $i \
+            \( \
+                -type f \
+                -name 'core' -o -name 'core.[1-9]*' -o -name 'vgcore.*' \
+            \) -print0 | \
+            xargs -t -0 rm 2>/dev/null
     else
         echo "no directory: $i" 1>&2
     fi

bin/rm~all

@@ -29,24 +29,32 @@
 #     remove all *~ files
 #------------------------------------------------------------------------------
 
+usage() {
+    cat<<USAGE
+Usage: ${0##*/} [OPTIONS] [dir1] .. [dirN]
+options:
+    -help | -h         help
+
+Remove all backup *~ files
+USAGE
+}
+
 # default is pwd
 if [ "$#" -eq 0 ]
 then
     set -- .
 elif [ "$1" = "-h" -o "$1" = "-help" ]
 then
-    echo "Usage: ${0##*/} [dir1] .. [dirN]"
-    echo "    remove all *~ files"
-    exit 1
+    usage && exit 0
 fi
 
-
 for i
 do
     if [ -d "$i" ]
     then
         echo "removing all *~ files: $i"
-        find $i \( -name '*~' -o -name '.*~' \) -print0 | xargs -t rm 2>/dev/null
+        find $i \( -name '*~' -o -name '.*~' \) -print0 | \
+            xargs -t -0 rm 2>/dev/null
     else
         echo "no directory: $i" 1>&2
     fi