diff --git a/bashbot.sh b/bashbot.sh
index d50a46f..5870750 100755
--- a/bashbot.sh
+++ b/bashbot.sh
@@ -30,7 +30,7 @@ BOTCOMMANDS="-h  help  init  start  stop  status  suspendback  resumeback  killb
 #     8 - curl/wget missing
 #     10 - not bash!
 #
-#### $$VERSION$$ v1.41-dev-2-g5a689d2
+#### $$VERSION$$ v1.41-dev-5-g54673ac
 ##################################################################
 
 # are we running in a terminal?
@@ -443,17 +443,20 @@ download_file() {
 	local url="$1" file="${2:-$1}"
 	# old mode if full URL is given
 	if [[  "${1}" =~ ^https*:// ]]; then
-		# download full URL with random filename
-		file="${RANDOM}"
+	   # random filename if not given for http
+	   if [ -z "$2" ]; then
+		: "$(mktemp -u  -p . "XXXXXXXXXX" 2>/dev/null)"
+		file="download-${_#./}"
+	  fi
 	else
 		# prefix https://api.telegram...
 		url="${URL}/${url}"
 	fi
-	# filename: replace "/" with "-", prefix random number if file exist
-	file="${file//\//-}"
-	while [ -f "${DATADIR:-.}/${file}" ] ; do file="${RANDOM}-${file}"; done
-	getJson "${url}" >"${DATADIR:-.}/${file}" || return
-	printf '%s\n' "${DATADIR:-.}/${file}"
+	# filename: replace "/" with "-", use mktemp if exist
+	file="${DATADIR:-.}/${file//\//-}"
+	[ -f "${file}" ] && file="$(mktemp -p "${DATADIR:-.}" "XXXXX-${file##*/}" )"
+	getJson "${url}" >"${file}" || return
+	printf '%s\n' "${file}"
 }
 
 
diff --git a/doc/6_reference.md b/doc/6_reference.md
index b4a86ad..5d900b4 100644
--- a/doc/6_reference.md
+++ b/doc/6_reference.md
@@ -1419,33 +1419,37 @@ echo "$photo" -> photo/file_1234.jpg
 file="$(download_file "${photo}"
 echo "$file" -> ./data-bot-bash/photo-file_1234.jpg
 
-# second, third etc. download
+# second download
 file="$(download_file "${photo}"
-echo "$file" -> ./data-bot-bash/jkdfhihsdkf-photo-file_1234.jpg
+echo "$file" -> ./data-bot-bash/jkdfhi-photo-file_1234.jpg
 
 ls data-bot-bash/*.jpg
-photo-file_1234.jpg jkdfhihsdkf-photo-file_1234.jpg
+photo-file_1234.jpg  jkdfhi-photo-file_1234.jpg
+
 
 ########
 # download from other sources (full URL)
+file="$(download "https://avatars.githubusercontent.com/u/13046303")"
+echo "$file" -> ./data-bot-bash/download-askjgftGJGdh1Z
+
 file="$(download "https://avatars.githubusercontent.com/u/13046303" "avatar.jpg")"
 echo "$file" -> ./data-bot-bash/avatar.jpg
 
 file="$(download "https://avatars.githubusercontent.com/u/13046303" "avatar.jpg")"
-echo "$file" -> ./data-bot-bash/jhsdfjkakshdfkja-avatar.jpg
+echo "$file" -> ./data-bot-bash/jhsdf-avatar.jpg
+
+ls data-bot-bash/
+avatar.jpg  jhsdf-avatar.jpg  download-askjgftGJGdh1Z  
 
-ls data-bot-bash/*.jpg
-photo-file_1234.jpg jkdfhihsdkf-photo-file_1234.jpg
-avatar.jpg jhsdfjkakshdfkja-avatar.jpg
 
 #######
 # manually download files to current directory (not recommended)
 getJson "https://avatars.githubusercontent.com/u/13046303" >"avatar.jpg"
 getJson "i${URL}/${photo}" >"downloaded_photo.jpg"
 
-ls *
-JSON.sh/    addons/     bin/         data-bot_bash/        doc/     modules/         scripts/
-avatar.jpg  bashbot.sh  commands.sh  downloaded_photo.jpg  LICENSE  mycommands.conf  mycommands.sh  mycommands.sh    
+ls -F
+JSON.sh/ bin/ modules/ data-bot-bash/
+avatar.jpg  bashbot.sh*  botconfig.jssh  commands.sh  count.jssh  downloaded_photo.jpg  mycommands.sh ...
 
 ```
 
@@ -1613,5 +1617,5 @@ The name of your bot is available as bash variable "$ME", there is no need to ca
 #### [Prev Best Practice](5_practice.md)
 #### [Next Notes for Developers](7_develop.md)
 
-#### $$VERSION$$ v1.41-dev-4-gbaa4e14
+#### $$VERSION$$ v1.41-dev-5-g54673ac