fastdu, and arhiver improvements

files/fastdu

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+function helpexit() {
+    echo "Display file/folder sizes like 'du', but faster and actual byte sizes"
+    echo "Returns only the size as number"
+    echo "  -h       Human readable units"
+    echo "  --help   This help"
+    exit
+}
+function filesize {
+# Return a human readable size from integer of bytes
+# Usage:  filesize 10000
+
+    [ "$1"  = "0" ] && {
+        echo "0 B"
+        return 0
+    }
+
+    awk 'BEGIN{ x = '$1'
+        split("B KB MB GB TB PB EB ZB",type)
+        for(i=7;y < 1;i--)
+            y = x / (2^(10*i))
+        str=int(y*10)/10 " " type[i+2] 
+        if (x==0) { str = "0 B" }
+        print str
+    }' || return $?
+}
+
+[[ -z "$1" ]] && what="."
+[[ "$1" = "-h" ]] && { HUMAN=1; shift 1; }
+[[ "$1" = "--help" ]] && helpexit
+
+SIZE=$( find $what "$@" -type f -printf %s"\n" | awk '{  sum += $1 } END { print int(sum)+0 }' )
+
+[[ "$HUMAN" -eq 1 ]] && {
+    filesize "$SIZE"
+    exit
+}
+echo $SIZE