fixed passes parameter, added shorthands

README.md

@@ -65,8 +65,8 @@ You can print a help message by running the script without any parameters:
 
 | Name      | Description | Default |
 |-----------|-------------|---------|
-| -checksum | Whether to compare attributes and content of the copied file using an **MD5** checksum. Technically this is a redundent check and consumes a lot of resources, so think twice. | `true` |
-| -passes   | The maximum number of rebalance passes per file. Setting this to infinity by using a value `<= 0` might improve performance when rebalancing a lot of small files. | `1` |
+| `-c` | `--checksum` | Whether to compare attributes and content of the copied file using an **MD5** checksum. Technically this is a redundent check and consumes a lot of resources, so think twice. | `true` |
+| `-p` | `--passes`   | The maximum number of rebalance passes per file. Setting this to infinity by using a value `<= 0` might improve performance when rebalancing a lot of small files. | `1` |
 
 ### Example
 

zfs-inplace-rebalancing.sh

@@ -176,7 +176,7 @@ fi
 
 while true ; do
     case "$1" in
-        -checksum )
+        -c | --checksum )
             if [ "$2" -eq 1 ] || [[ "$2" =~ (on|true|yes) ]]; then
                 checksum_flag="true"
             else
@@ -184,7 +184,7 @@ while true ; do
             fi
             shift 2
         ;;
-        -count )
+        -p | --passes )
             passes_flag=$2
             shift 2
         ;;