Added tmux not found option

functions/fn_distrodetails

@@ -27,7 +27,9 @@ glibcv=$(ldd --version |grep ldd|awk '{print $NF}')
 
 # tmux version
 # e.g: tmux 1.6
-if [ "$(tmux -V|sed "s/tmux //"|sed -n '1 p'|tr -cd [:digit:]|tail -c 3)" -lt "16" ]; then
+if [ -z $(command -v tmux) ]; then
+	tmuxv="\e[0;31mNOT INSTALLED!\e[0m"
+elif [ "$(tmux -V|sed "s/tmux //"|sed -n '1 p'|tr -cd [:digit:]|tail -c 3)" -lt "16" ]; then
 	tmuxv="$(tmux -V) (>= 1.6 required for console log)"
 else
 	tmuxv=$(tmux -V)