diff --git a/010_saltstack.sh b/010_saltstack.sh
index 2b81de2..25ca3ec 100644
--- a/010_saltstack.sh
+++ b/010_saltstack.sh
@@ -39,9 +39,10 @@ SALT_VERSION=2016.3
 SALT_VERSION=2016.11 
 SALT_VERSION=2017.7 
 SALT_VERSION=archive/2017.7.3 
+SALT_VERSION=2018.3.0
 SALT_VERSION=latest 
 
-REFRESHED_AT=2018-02-20
+REFRESHED_AT=2018-06-10
 
 mkdir -p /etc/apt/sources.list-available
 #bash -c "wget -q -O- "http://debian.saltstack.com/debian-salt-team-joehealy.gpg.key" | apt-key add -"
diff --git a/010_zram.sh b/010_zram.sh
index ffe8bcb..5072bab 100644
--- a/010_zram.sh
+++ b/010_zram.sh
@@ -1,4 +1,5 @@
 #!/bin/sh
+# https://www.kernel.org/doc/Documentation/blockdev/zram.txt
 cat > /etc/init.d/zram <<'EOF'
 #!/bin/sh
 ### BEGIN INIT INFO
diff --git a/020_fish.sh b/020_fish.sh
index 425bef5..e8b19d4 100644
--- a/020_fish.sh
+++ b/020_fish.sh
@@ -63,6 +63,52 @@ function sr
     eval $argv > /dev/null 2>&1 &
 end
 
+function transfer
+    if test (count $argv) -eq 0
+        echo "No arguments specified. Usage:\necho transfer /tmp/test.md\ncat /tmp/test.md | transfer test.md"
+        return 1
+    end
+
+    ## get temporarily filename, output is written to this file show progress can be showed
+    set tmpfile ( mktemp -t transferXXX )
+
+    ## upload stdin or file
+    set file $argv[1]
+
+    #if tty -s;
+    #then
+        set basefile (basename "$file" | sed -e 's/[^a-zA-Z0-9._-]/-/g')
+
+    #    if [ ! -e $file ];
+    #    then
+    #        echo "File $file doesn't exists."
+    #        return 1
+    #    fi
+
+        if test -d $file
+            # zip directory and transfer
+            set zipfile ( mktemp -t transferXXX.zip )
+            # echo (dirname $file)
+            #cd (dirname $file) and echo (pwd)
+            zip -r -q - $file >> $zipfile
+            curl --progress-bar --upload-file "$zipfile" "https://transfer.sh/$basefile.zip" >> $tmpfile
+            rm -f $zipfile
+        else
+            # transfer file
+            curl --progress-bar --upload-file "$file" "https://transfer.sh/$basefile" >> $tmpfile
+        end
+    #else
+    #    # transfer pipe
+    #    curl --progress-bar --upload-file "-" "https://transfer.sh/$file" >> $tmpfile
+    #fi
+
+    ## cat output link
+    cat $tmpfile
+
+    ## cleanup
+    rm -f $tmpfile
+end
+
 alias subl "subl3"
 alias vim "nvim"
 
diff --git a/020_waterfox.sh b/020_waterfox.sh
index a48183a..22e05c2 100644
--- a/020_waterfox.sh
+++ b/020_waterfox.sh
@@ -17,6 +17,8 @@ apt-get update
 
 apt-get install -y waterfox
 
+update-alternatives --install /usr/bin/x-www-browser x-www-browser /usr/bin/waterfox 201
+
 # Themes
 ## Australis Dark - enabled in Firefox 53
 ## Has rounded corners on active tab and grey surround
diff --git a/020_zsh.sh b/020_zsh.sh
index a77f474..3adbcc5 100644
--- a/020_zsh.sh
+++ b/020_zsh.sh
@@ -274,5 +274,75 @@ alias ipython="_py_version"
 alias jupyter="_py_version"
 EOF
 
+cat > .zsh_aliases.d/003-transfer.zsh <<'EOF'
+#
+# Defines transfer alias and provides easy command line file and folder sharing.
+#
+# Authors:
+#   Remco Verhoef <remco@dutchcoders.io>
+#
+
+curl --version 2>&1 > /dev/null
+if [ $? -ne 0 ]; then
+  echo "Could not find curl."
+  return 1
+fi
+
+transfer() { 
+    # check arguments
+    if [ $# -eq 0 ]; 
+    then
+        echo -e "No arguments specified.\n\nUsage:\necho transfer /tmp/test.md\ncat /tmp/test.md | transfer test.md"
+        return 1
+    fi
+
+    # get temporarily filename, output is written to this file show progress can be showed
+    tmpfile=$( mktemp -t transferXXX )
+    
+    # upload stdin or file
+    file=$1
+
+    if tty -s; 
+    then 
+        basefile=$(basename "$file" | sed -e 's/[^a-zA-Z0-9._-]/-/g') 
+
+        if [ ! -e $file ];
+        then
+            echo "File $file doesn't exists."
+            return 1
+        fi
+        
+        if [ -d $file ];
+        then
+            # zip directory and transfer
+            zipfile=$( mktemp -t transferXXX.zip )
+            cd $(dirname $file) && zip -r -q - $(basename $file) >> $zipfile
+            curl --progress-bar --upload-file "$zipfile" "https://transfer.sh/$basefile.zip" >> $tmpfile
+            rm -f $zipfile
+        else
+            # transfer file
+            curl --progress-bar --upload-file "$file" "https://transfer.sh/$basefile" >> $tmpfile
+        fi
+    else 
+        # transfer pipe
+        curl --progress-bar --upload-file "-" "https://transfer.sh/$file" >> $tmpfile
+    fi
+   
+    # cat output link
+    cat $tmpfile
+    
+    # log file link
+    APPLICATION="${0##*/}"
+    RIGHTNOW="$(date)"
+    EXPIRES="$(date -d "+14 days")"
+    echo -e "$(cat "$tmpfile") - uploaded $RIGHTNOW - expires $EXPIRES\n" >> ~/$APPLICATION.log
+    echo "\n\nSee ~/$APPLICATION.log for all transfers.\n"
+
+    # cleanup
+    rm -f $tmpfile
+}
+EOF
+
+
 chown -R root.root /usr/local/share/zsh/site-functions
 chmod -R 755 /usr/local/share/zsh/site-functions