[search@dnode1 2015-04-10]$ find ./conversions/ -type d
./conversions/
./conversions/uv
./conversions/uv/tmp_search_date_algo_uv
./conversions/uv/tmp_search_date_algo_channel_uv
./conversions/uv/tmp_search_date_cate_uv
./conversions/uv/tmp_search_date_algo_country_uv
./conversions/uv/tmp_search_date_country_uv
./conversions/uv/tmp_search_date_channel_uv
./conversions/uv/tmp_search_date_uv
./conversions/uv/tmp_search_date_algo_cate_uv
./conversions/keyword
./conversions/keyword/tmp_search_kw_algo_rate
./conversions/keyword/tmp_search_kw_rate
./conversions/pv
./conversions/pv/tmp_search_date_cate_pv
./conversions/pv/tmp_search_date_algo_channel_pv
./conversions/pv/tmp_search_date_pv
./conversions/pv/tmp_search_date_algo_pv
./conversions/pv/tmp_search_date_algo_country_pv
./conversions/pv/tmp_search_date_channel_pv
./conversions/pv/tmp_search_date_algo_cate_pv
./conversions/pv/tmp_search_date_country_pv
[search@dnode1 2015-04-10]$ find命令的说明：
[search@dnode1 2015-04-10]$ man find
FIND(1) FIND(1)
NAME
find - search for files in a directory hierarchy
SYNOPSIS
find [-H] [-L] [-P] [-D debugopts] [-Olevel] [path...] [expression]
DESCRIPTION
This manual page documents the GNU version of find. GNU find searches the directory tree rooted at each given file name by evaluating the given expression from left to
right, according to the rules of precedence (see section OPERATORS), until the outcome is known (the left hand side is false for and operations, true for or), at which
point find moves on to the next file name.
If you are using find in an environment where security is important (for example if you are using it to search directories that are writable by other users), you should
read the "Security Considerations" chapter of the findutils documentation, which is called Finding Files and comes with findutils. That document also includes a lot
more detail and discussion than this manual page, so you may find it a more useful source of information.
OPTIONS
The -H, -L and -P options control the treatment of symbolic links. Command-line arguments following these are taken to be names of files or directories to be examined,
up to the first argument that begins with ‘-’, or the argument ‘(’ or ‘!’. That argument and any following arguments are taken to be the expression describing what is
to be searched for. If no paths are given, the current directory is used. If no expression is given, the expression -print is used (but you should probably consider
using -print0 instead, anyway).
This manual page talks about ‘options’ within the expression list. These options control the behaviour of find but are specified immediately after the last path name.
The five ‘real’ options -H, -L, -P, -D and -O must appear before the first path name, if at all. A double dash -- can also be used to signal that any remaining argu-
ments are not options (though ensuring that all start points begin with either ‘./’ or ‘/’ is generally safer if you use wildcards in the list of start points).
-P Never follow symbolic links. This is the default behaviour. When find examines or prints information a file, and the file is a symbolic link, the information
used shall be taken from the properties of the symbolic link itself.
-L Follow symbolic links. When find examines or prints information about files, the information used shall be taken from the properties of the file to which the
link points, not from the link itself (unless it is a broken symbolic link or find is unable to examine the file to which the link points). Use of this option
implies -noleaf. If you later use the -P option, -noleaf will still be in effect. If -L is in effect and find discovers a symbolic link to a subdirectory during
its search, the subdirectory pointed to by the symbolic link will be searched.
When the -L option is in effect, the -type predicate will always match against the type of the file that a symbolic link points to rather than the link itself
(unless the symbolic link is broken). Using -L causes the -lname and -ilname predicates always to return false.
-H Do not follow symbolic links, except while processing the command line arguments. When find examines or prints information about files, the information used
shall be taken from the properties of the symbolic link itself. The only exception to this behaviour is when a file specified on the command line is a symbolic
link, and the link can be resolved. For that situation, the information used is taken from whatever the link points to (that is, the link is followed). The
information about the link itself is used as a fallback if the file pointed to by the symbolic link cannot be examined. If -H is in effect and one of the paths
specified on the command line is a symbolic link to a directory, the contents of that directory will be examined (though of course -maxdepth 0 would prevent
this).
If more than one of -H, -L and -P is specified, each overrides the others; the last one appearing on the command line takes effect. Since it is the default, the -P
option should be considered to be in effect unless either -H or -L is specified.
GNU find frequently stats files during the processing of the command line itself, before any searching has begun. These options also affect how those arguments are pro-
cessed. Specifically, there are a number of tests that compare files listed on the command line against a file we are currently considering. In each case, the file
specified on the command line will have been examined and some of its properties will have been saved. If the named file is in fact a symbolic link, and the -P option
is in effect (or if neither -H nor -L were specified), the information used for the comparison will be taken from the properties of the symbolic link. Otherwise, it
will be taken from the properties of the file the link points to. If find cannot follow the link (for example because it has insufficient privileges or the link points
to a nonexistent file) the properties of the link itself will be used.
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