Tree is a recursive directory listing program that produces a depth
indented listing of files. Color is supported ala dircolors if the LS_COLORS
environment variable is set, output is to a tty, and the -C flag is used. With no arguments,
tree lists the files in the current directory. When directory
arguments are given, tree lists all the files and/or directories found
in the given directories each in turn. Upon completion of listing all
files/directories found, tree returns the total number of files and/or
By default, when a symbolic link is encountered, the path that the symbolic
link refers to is printed after the name of the link in the format:
name -> real-path
If the `-l' option is given and the symbolic link refers to an actual
directory, then tree will follow the path of the symbolic link as if
it were a real directory.
Tree understands the following command line switches:
Outputs a verbose usage listing.
Outputs the version of tree.
All files are printed. By default tree does not print hidden files (those
beginning with a dot `.'). In no event does tree print the file system
constructs `.' (current directory) and `..' (previous directory).
List directories only.
Prints the full path prefix for each file.
Makes tree not print the indentation lines, useful when used in conjunction
with the -f option.
Follows symbolic links if they point to directories, as if they were
directories. Symbolic links that will result in recursion are avoided when
Stay on the current file-system only. Ala find -xdev.
List only those files that match the wild-card pattern. Note: you must use
the -a option to also consider those files beginning with a dot `.' for
matching. Valid wildcard operators are `*' (any zero or more characters), `?' (any
single character), `[...]' (any single character listed between brackets (optional -
(dash) for character range may be used: ex: [A-Z]), and `[^...]' (any single character
not listed in brackets) and `|' separates alternate patterns.
Do not list those files that match the wild-card pattern.
Omits printing of the file and directory report at the end of the tree
Print the protections for each file (as per ls -l).
Print the size of each file along with the name.
Print the username, or UID # if no username is available, of the file.
Print the group name, or GID # if no group name is available, of the file.
Print the date of the last modification time for the file listed.
Prints the inode number of the file or directory
Prints the device number to which the file or directory belongs
Append a `/' for directories, a `=' for socket files, a `*' for executable files
and a `|' for FIFO's, as per ls -F
Print non-printable characters in filenames as question marks instead of the default
Print non-printable characters as is instead of the default caret notation.
Sort the output in reverse alphabetic order.
Sort the output by last modification time instead of alphabetically.
List directories before files.
Turn colorization off always, over-ridden by the -C option.
Turn colorization on always, using built-in color defaults if the LS_COLORS
environment variable is not set. Useful to colorize output to a pipe.
Turn on ANSI line graphics hack when printing the indentation lines.
Turn on ASCII line graphics (useful when using linux console mode fonts). This
option is now equivalent to `--charset=IBM437' and will eventually be
Max display depth of the directory tree.
Recursively cross down the tree each level directories (see -L
option), and at each of them execute tree again adding `-o 00Tree.html'
as a new option.
Turn on HTML output, including HTTP references. Useful for ftp sites.
baseHREF gives the base ftp location when using HTML output. That is, the local
directory may be `/local/ftp/pub', but it must be referenced as
`ftp://hostname.organization.domain/pub' (baseHREF should be
`ftp://hostname.organization.domain'). Hint: don't use ANSI lines with this option,
and don't give more than one directory in the directory list. If you wish to
use colors via CCS stylesheet, use the -C option in addition to this option
to force color output.
Sets the title and H1 header string in HTML output mode.
Set the character set to use when outputting HTML and for line drawing.
Turns off hyperlinks in HTML output.
Send output to filename.
/etc/DIR_COLORSSystem color database.
~/.dircolorsUsers color database.
LS_COLORSColor information created by dircolors
TREE_CHARSETCharacter set for tree to use in HTML mode.
Tree does not prune "empty" directories when the -P and -I options are used.
Tree prints directories as it comes to them, so cannot accumulate information
on files and directories beneath the directory it is printing. Probably more.