Finds all the files in the file tree and displays the file names fishing, showing the hierarchical file tree.

Tree, searches all file tree and prints the names of all files in a visual tree format. It recursively searches in each directory and finds all files, thus providing global inspection of files and their nested depth structure.

tree [dir]

Example call:

tree $HOME

#!/bin/bash
#
# @ (#) tree v1.0 Visual display of a file tree 
# output to a file tree structure screen
#
 
if [ "$#" -gt 1]
then echo "tree: wrong arg count"> & 2
echo "usage: tree [dir]"> & 2
exit 2
fi
 
if [ "$#" -eq 1]
 then if [! -d $1]
 then echo "$0: $1 not a directory"> & 2
 echo "usage: tree [dir]"> & 2
 exit 2
 fi
fi
 
find $ {1: -.} -print | sort | sed -e "1p" -e "1d" \
 -e "s | [^ /] * / | / | g" \
 -e "s | [^ * / | / |" \
 -e "s | / \ ([^ /] * \) $ | \ 1 |"

This uses an implicit directory (the current directory) as the beginning of the file tree.

tree

Print the tree listing for each file of the entire system.

tree /

This shows the tree-format for all other users system (assuming that all user directories are the same directory, such as /usr/*).

tree $HOME / ..

Consider the example of a directory structure. Let the root directory to /tmp with two directories: a and b. The catalog is a subdirectories log aa, which contains the file1 file directory and b, respectively, subdirectory bb, containing file file2.

The find command will give a printout like this:

find /tmp -print

Result

/tmp
/tmp/a
/tmp/a/aa
/tmp/a/aa/file1
/tmp/b
/tmp/b/bb
/tmp/b/bb/file2

As can be seen from this listing, the files a and aa are directories and file file1 is located at the bottom of the file tree.

Now compare this result with the results of the tree script.

tree /tmp

Result

/tmp
/a
//aa
///file1
/b
//bb
///file2