Rendre les fichiers invisibles:
SetFile file -a V
SetFile peut également modifier de nombreux autres attributs de fichier et métadonnées.
SetFile n'est pas une commande native OS X, il est fourni avec DevTools / Xcode.
Si vous ne disposez pas de Xcode et que vous ne souhaitez pas télécharger environ 6 Go, vous pouvez utiliser
sudo chflags hidden|nohidden <file/folder>
chflags est une commande BSD et il a aussi une page de manuel, entrez ceci dans Terminal
man chflags
pour ceux qui n'aiment pas entrer eux-mêmes dans les commandes et aimeraient simplement savoir ce qu'il y a dans l'homme. Vous avez ici:
CHFLAGS(1)        BSD General Commands Manual           CHFLAGS(1)
NAME
     chflags -- change file flags
SYNOPSIS
     chflags [-fhv] [-R [-H | -L | -P]] flags file ...
DESCRIPTION
     The chflags utility modifies the file flags of the listed files as speci-
     fied 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 nota-
         tion.
     The flags are specified as an octal number or a comma separated list of
     keywords.  The following keywords 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.
EXIT STATUS
     The chflags utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
     ls(1), chflags(2), stat(2), fts(3), symlink(7)
HISTORY
     The chflags command first appeared in 4.4BSD.
BUGS
     Only a limited number of utilities are chflags aware.  Some of these
     tools include ls(1), cp(1), find(1), install(1), dump(8), and restore(8).
     In particular a tool which is not currently chflags aware is the pax(1)
     utility.
BSD              March 3, 2006                 BSD