linux - Recursive Function to Return Directory Depth of File Tree -

i'm trying write function traverse file directory , give me value of deepest directory. i've written function , seems going each directory, counter doesn't seem work @ all.

dir_depth(){   local olddir=$pwd local dir local counter=0 cd "$1"   dir in *   if [ -d "$dir" ]       dir_depth "$1/$dir"     echo "$dir"     counter=$(( $counter + 1 ))   fi  done cd "$olddir" } 

what want feed function directory, /home, , it'll go down each subdirectory within , find deepest value. i'm trying learn recursion better, i'm not sure i'm doing wrong.

here version seems work:

#!/bin/sh  dir_depth() {   cd "$1"   maxdepth=0   d in */.;     [ -d "$d" ] || continue     depth=`dir_depth "$d"`     maxdepth=$(($depth > $maxdepth ? $depth : $maxdepth))   done   echo $((1 + $maxdepth)) }  dir_depth "$@"