Bash client added

client.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# Simple bash client for linux
+
+if [ "$#" != 3 ] ||  { [ "$1" != "download" ] && [ "$1" != "upload" ];}
+then echo "Usage: $0 [download|upload] FILENAME SERVERNAME"; exit 1; fi
+
+f=$2; s=$3
+
+if [ "$1" = "download" ]
+then
+  c=$(dig +short txt "$f".count."$s"|tr -d \")
+  for i in $(seq 0 "$c"); do echo -n "$(dig +short txt "$f"."$i"."$s"|tr -d \")"; done | base64 -d > "$f"
+else
+  i=0; d=$(base64 -w 0 < "$f"); id=$(sha256sum "$f" | cut -d" " -f1 | base64 -w 0 | cut -c1-6)
+  while true; do
+    u=".$i-${id}u.$s"; ((i++)); x=$((63-${#u}))
+    if [ $x -lt ${#d} ]
+    then p=${d:0:$x}; d=${d:$x}; dig +short txt "$p$u"
+    else dig +short txt "$d$u"; exit 0
+    fi
+  done
+fi