Mithilfe des Terminals kann man eine Datei oder einen Ordner «zippen» und mit einem Kennwort versehen:

Der Befehl für einen Ordner lautet:

zip -er ~/Desktop/ORDNERNAME.zip ~/Desktop/ORDNERNAME

(Falls es sich um einen Datei handelt einfach die Option -r weglassen)

zip - package and compress (archive) files

-e
        --encrypt
               Encrypt the contents of the zip archive using a password which is entered on the terminal in response to a prompt (this will not be echoed; if
               standard error is not a tty, zip will exit with an error).  The password prompt is repeated to save the user from typing errors.

-r
        --recurse-paths
               Travel the directory structure recursively; for example:
                  zip -r foo.zip foo           or more concisely                  zip -r foo foo           In  this  case,  all  the  files  and directories in foo are saved in a zip archive named           foo.zip, including files with names starting with ".", since the recursion does  not  use           the  shell's  file-name  substitution  mechanism.  If you wish to include only a specific           subset of the files in directory foo and its subdirectories, use the -i option to specify           the  pattern  of  files  to be included.  You should not use -r with the name ".*", since           that matches ".."  which will attempt to zip up the parent directory (probably  not  what           was intended).           Multiple source directories are allowed as in                  zip -r foo foo1 foo2           which first zips up foo1 and then foo2, going down each directory.           Note  that  while wildcards to -r are typically resolved while recursing down directories           in the file system, any -R, -x, and -i wildcards are applied to  internal  archive  path-           names  once the directories are scanned.  To have wildcards apply to files in subdirecto-           ries when recursing on Unix and similar systems where the shell does  wildcard  substitu-           tion,  either  escape  all wildcards or put all arguments with wildcards in quotes.  This           lets zip see the wildcards and match files in subdirectories using them as it recurses.