shadow man page on HP-UX

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shadow(4)							     shadow(4)

NAME
       shadow - shadow password file

SYNOPSIS
DESCRIPTION
       The  file is created from the file by the command.  It is readable only
       by a privileged user.  It can be modified by the	 and  commands.	  Pro‐
       grams  may  use the interfaces described in the getspent(3C) manpage to
       access this information.	 These functions return a pointer to an struc‐
       ture, which is defined in the header file.

   Fields
       The file is an ASCII file consisting of any number of user entries sep‐
       arated by newlines.  Each user entry line  consists  of	the  following
       fields separated by colons:

	      login  name  Each login name must match a login name in puts the
	      user entries in in the same order as the entries.

	      encrypted password
		     The password field of each entry contains an "x", and the
		     actual  encrypted passwords reside in The encrypted pass‐
		     word field	 consists  of  13  characters  chosen  from  a
		     64-character  set	of  "digits".	The characters used to
		     represent "digits" are  for  0,  for  1,  through	for  2
		     through 11, through for 12 through 37, and through for 38
		     through 63.

		     If the SHA11i3 product is installed, the  password	 field
		     may  contain  the prefix , where n is a label identifying
		     an alternative algorithm  used  for  the  password	 hash.
		     Using  the new algorithm results in an encrypted password
		     field which is longer than 13 characters.	 The  password
		     field  will  consist of digits from the same 64-character
		     set, as well as the additional character used as a delim‐
		     iter.

		     If	 this  field is null, then there is no password and no
		     password is demanded on login.  Login can be prevented by
		     entering  a  character  that  is not a part of the set of
		     digits (such as *).

	      last change
		     The number of days since January 1, 1970 that  the	 pass‐
		     word was last modified.

	      min days
		     The  minimum  period  in days that must expire before the
		     password can be changed.  See also in security(4) and the
		     command in passwd(1).

	      max days
		     The maximum number of days for which a password is valid.
		     A user who attempts  to  login  after  his	 password  has
		     expired  is  forced to supply a new one.  If min days and
		     max days are both zero, the user is forced to change  his
		     password  the  next  time	he  logs  in.	If min days is
		     greater than  max	days,  then  the  password  cannot  be
		     changed.	These  restrictions  do not apply to the supe‐
		     ruser.  See  also	in  security(4)	 and  the  command  in
		     passwd(1).

	      warn days
		     The number of days the user is warned before his password
		     expires.  See also in  security(4)	 and  the  command  in
		     passwd(1).

	      inactivity
		     The  maximum  number of days of inactivity allowed.  This
		     field is set with the option of either  the  or  command.
		     If	 this  value is greater than zero, then the account is
		     locked if there have been no logins to the account for at
		     least  the	 specified  number  of days.  If this value is
		     less than or equal to zero, the value  is	determined  by
		     the attribute.  See the description of in security(4).

	      expiration
		     The absolute number of days since Jan 1, 1970 after which
		     the account is no longer valid.  A value of zero in  this
		     field indicates that the account is locked.

	      reserved
		     The  reserved  field  is  always zero and is reserved for
		     future use.

   Notes
       The file is not applicable to a system which has been  converted	 to  a
       trusted system.

WARNINGS
       HP-UX  11i  Version  3  is  the last release to support trusted systems
       functionality.

FILES
       system password file
       shadow password file

SEE ALSO
       login(1),    passwd(1),	  pwconv(1M),	 pwunconv(1M),	  useradd(1M),
       userdel(1M),  usermod(1M),  crypt(3C), getspent(3C), putspent(3C), nss‐
       witch.conf(4), passwd(4), security(4).

								     shadow(4)
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