tree

$ tree --help usage: tree [-adfgilnpqrstuxACDFNS] [-H baseHREF] [-T title ] [-L level [-R]]         [-P pattern] [-I pattern] [-o filename] [--version] [--help] [--inodes]         [--device] [--noreport] [--nolinks] [--dirsfirst] [--charset charset]         [<directory list>]     -a          All files are listed.     -d          List directories only.     -l          Follow symbolic links like directories.     -f          Print the full path prefix for each file.     -i          Don't print indentation lines.     -q          Print non-printable characters as '?'.     -N          Print non-printable characters as is.     -p          Print the protections for each file.     -u          Displays file owner or UID number.     -g          Displays file group owner or GID number.     -s          Print the size in bytes of each file.     -D          Print the date of last modification.     -F          Appends '/', '=', '*', or '|' as per ls -F.     -r          Sort files in reverse alphanumeric order.     -t          Sort files by last modification time.     -x          Stay on current filesystem only.     -L level    Descend only level directories deep.     -A          Print ANSI lines graphic indentation lines.     -S          Print with ASCII graphics indentation lines.     -n          Turn colorization off always (-C overrides).     -C          Turn colorization on always.     -P pattern  List only those files that match the pattern given.     -I pattern  Do not list files that match the given pattern.     -H baseHREF Prints out HTML format with baseHREF as top directory.     -T string   Replace the default HTML title and H1 header with string.     -R          Rerun tree when max dir level reached.     -o file     Output to file instead of stdout.     --inodes    Print inode number of each file.     --device    Print device ID number to which each file belongs.     --noreport  Turn off file/directory count at end of tree listing.     --nolinks   Turn off hyperlinks in HTML output.     --dirsfirst List directories before files.     --charset X Use charset X for HTML and indentation line output.

tree는 트리 구조로 보여주는 녀석인데, 기본적으로 Recursive 하게 디렉토리를 검색해서 보여준다.
그렇기 때문에 사용하기가 조금은 귀찮았던 녀석인데, directory depth를 제한 할 수 있는 옵션이 있었다.

$ tree -d -L 1

이라고 입력하면 현재 위치의 디렉토리만 보여준다.(하위 경로까지 타고 들어 가지는 않음)

[링크 : http://linux.die.net/man/1/tree]