利用命令“chflags hidden” 可以隐藏文件或文件夹。先打开Terminal（Applications/Utilities/Terminal），然后执行命令

    chflags hidden 文件路径   或

    chflags hidden 文件夹路径

既可。也可以先输入chflags hidden，然后直接把要隐藏的文件用鼠标选中拖到输入框中，它自动会转换为文件的路径。

要解除文件的隐藏状态，可以使用命令：

    chflags nohidden

chflags 命令修改文件的标志（change file flags），包括隐藏标志，其详细使用方法如下：

SYNOPSIS
     chflags [-fhv] [-R [-H | -L | -P]] flags file ...

DESCRIPTION
     The chflags utility modifies the file flags of the listed files as specified by the flags operand.

     The options are as follows:

     -f      Do not display a diagnostic message if chflags could not modify the flags for file, nor modify
             the exit status to reflect such failures.

     -H      If the -R option is specified, symbolic links on the command line are followed.  (Symbolic
             links encountered in the tree traversal are not followed.)

     -h      If the file is a symbolic link, change the file flags of the link itself rather than the file
             to which it points.

     -L      If the -R option is specified, all symbolic links are followed.

     -P      If the -R option is specified, no symbolic links are followed.  This is the default.

     -R      Change the file flags for the file hierarchies rooted in the files instead of just the files
             themselves.

     -v      Cause chflags to be verbose, showing filenames as the flags are modified.  If the -v option is
             specified more than once, the old and new flags of the file will also be printed, in octal
             notation.

     The flags are specified as an octal number or a comma separated list of keywords.  The following key-
     words are currently defined:

           arch, archived
                   set the archived flag (super-user only)

           opaque  set the opaque flag (owner or super-user only).  [Directory is opaque when viewed through
                   a union mount]

           nodump  set the nodump flag (owner or super-user only)

           sappnd, sappend
                   set the system append-only flag (super-user only)

           schg, schange, simmutable
                   set the system immutable flag (super-user only)

           uappnd, uappend
                   set the user append-only flag (owner or super-user only)

           uchg, uchange, uimmutable
                   set the user immutable flag (owner or super-user only)

           hidden  set the hidden flag [Hide item from GUI]

     As discussed in chflags(2), the sappnd and schg flags may only be unset when the system is in single-
     user mode.

     Putting the letters ``no'' before or removing the letters ``no'' from a keyword causes the flag to be
     cleared.  For example:

           nouchg  clear the user immutable flag (owner or super-user only)
           dump    clear the nodump flag (owner or super-user only)

     Unless the -H or -L options are given, chflags on a symbolic link always succeeds and has no effect.
     The -H, -L and -P options are ignored unless the -R option is specified.  In addition, these options
     override each other and the command's actions are determined by the last one specified.

     You can use "ls -lO" to see the flags of existing files.