folder manipulation tools

folderSplitter

@@ -0,0 +1,68 @@
+#!/bin/bash
+
+function helpexit() {
+    echo "FolderSplitter:  copy files in this folder to subfolders in equal distribution"
+    echo "usage: FolderSplitter [numberOfFolders] [rootFolder]"
+    echo " If rootFolder omitted, current working directory used "
+    exit
+}
+[[ -z "$1" ]] && helpexit
+[[ "$1" = "-h" ]] && helpexit
+
+
+if [ -z "$2" ]
+then indir=$( pwd )
+else
+    if [ -d "$2" ]
+    then indir="$2"
+    else
+        echo $2 does not exist.
+        exit 1
+    fi
+fi
+if [ -z "$1" ]
+then echo need a number to how many folders to split.
+     exit 1
+fi
+if [[ $1 == +([0-9]) ]] 
+then n=$1
+else
+    echo $1 is not integer
+    exit
+fi
+
+# make the list separator a rowchange
+IFS=$'\n' 
+# list files
+pushd "$indir"
+infiles=( $( ls ) )
+fip=0
+# create directories
+for (( d=1; d<=$n; d++ ))
+    do str="dir"$d
+    mkdir "${str}" || echo error creating directory ${str}
+done
+
+perdir=$(( ${#infiles[@]} / $n ))
+
+dip=1
+fip=1
+for (( f=0; f<${#infiles[@]}; f++ ))
+    do cp -lav "${infiles[$f]}" dir"$dip"/ || echo error copying file ${infiles[$f]} 
+    if (( $fip > $perdir ))
+        then dip=$(($dip+1))
+        fip=1
+    else
+        fip=$(($fip+1))
+    fi
+    if (( $dip > $n ))
+        then dip=$n
+    fi
+done
+
+for (( d=1; d<=$n; d++ ))
+    do echo "dir"$d with $( ls dir"$d" | wc --lines ) files 
+done
+
+
+