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+'\" t
+.\" Title: passwd
+.\" Author: Julianne Frances Haugh
+.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
+.\" Date: 09-05-2014
+.\" Manual: Anv\(:andarkommandon
+.\" Source: shadow-utils 4.2
+.\" Language: Swedish
+.\"
+.TH "PASSWD" "1" "09-05-2014" "shadow\-utils 4\&.2" "Anv\(:andarkommandon"
+.\" -----------------------------------------------------------------
+.\" * Define some portability stuff
+.\" -----------------------------------------------------------------
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.\" http://bugs.debian.org/507673
+.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\" -----------------------------------------------------------------
+.\" * set default formatting
+.\" -----------------------------------------------------------------
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.\" -----------------------------------------------------------------
+.\" * MAIN CONTENT STARTS HERE *
+.\" -----------------------------------------------------------------
+.SH "NAMN"
+passwd \- \(:andra anv\(:andarl\(:osenord
+.SH "SYNOPSIS"
+.HP \w'\fBpasswd\fR\ 'u
+\fBpasswd\fR [\fIflaggor\fR] [\fIINLOGGNINGSNAMN\fR]
+.SH "BESKRIVNING"
+.PP
+The
+\fBpasswd\fR
+command changes passwords for user accounts\&. A normal user may only change the password for his/her own account, while the superuser may change the password for any account\&.
+\fBpasswd\fR
+also changes the account or associated password validity period\&.
+.SS "L\(:osenords\(:andringar"
+.PP
+The user is first prompted for his/her old password, if one is present\&. This password is then encrypted and compared against the stored password\&. The user has only one chance to enter the correct password\&. The superuser is permitted to bypass this step so that forgotten passwords may be changed\&.
+.PP
+Efter att l\(:osenordet har matats in kontrolleras l\(:osenordets \(oaldringsinformation f\(:or att se om anv\(:andaren till\(oats att \(:andra l\(:osenord f\(:or tillf\(:allet\&. Om inte, nekar
+\fBpasswd\fR
+att \(:andra l\(:osenordet och avslutas\&.
+.PP
+Anv\(:andaren fr\(oagas sedan tv\(oa g\(oanger efter ett ers\(:attande l\(:osenord\&. Den andra inmatningen j\(:amf\(:ors mot den f\(:orsta och b\(oada m\(oaste st\(:amma \(:overens f\(:or att l\(:osenordet ska \(:andras\&.
+.PP
+Sedan testas l\(:osenordet f\(:or sin komplexitet\&. Som en allm\(:an riktlinje b\(:or l\(:osenord inneh\(oalla 6 till 8 tecken och inkluderas ett eller flera tecken fr\(oan var och en av f\(:oljande punkter:
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+gemena bokst\(:aver ur alfabetet
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+siffrorna 0 till 9
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+skiljetecken
+.RE
+.PP
+T\(:ank p\(oa att inte inkludera systemets standardtecken f\(:or radering eller d\(:oda\&.
+\fBpasswd\fR
+kommer att neka alla l\(:osenord som inte har l\(:amplig komplexitet\&.
+.SS "Tips f\(:or anv\(:andarl\(:osenord"
+.PP
+The security of a password depends upon the strength of the encryption algorithm and the size of the key space\&. The legacy
+\fIUNIX\fR
+System encryption method is based on the NBS DES algorithm\&. More recent methods are now recommended (see
+\fBENCRYPT_METHOD\fR)\&. The size of the key space depends upon the randomness of the password which is selected\&.
+.PP
+Problem i l\(:osenordss\(:akerheten brukar normalt komma fr\(oan slarvigt valda l\(:osenord eller hantering\&. Av denna anledning b\(:or du inte v\(:alja ett l\(:osenord som finns i en ordbok eller som m\(oaste skrivas ner\&. L\(:osenordet b\(:or heller inte vara ett korrekt namn, ditt personnummer, f\(:odelsedatum eller gatuadress\&. Dessa kan anv\(:andas som gissningar f\(:or att ta sig in i systemet\&.
+.PP
+You can find advices on how to choose a strong password on http://en\&.wikipedia\&.org/wiki/Password_strength
+.SH "FLAGGOR"
+.PP
+Flaggorna som g\(:aller f\(:or kommandot
+\fBpasswd\fR
+\(:ar:
+.PP
+\fB\-a\fR, \fB\-\-all\fR
+.RS 4
+Denna flagga kan endast anv\(:andas med
+\fB\-S\fR
+och g\(:or att status visas f\(:or alla anv\(:andare\&.
+.RE
+.PP
+\fB\-d\fR, \fB\-\-delete\fR
+.RS 4
+Ta bort en anv\(:andares l\(:osenord (g\(:or det blankt)\&. Detta \(:ar ett snabbt s\(:att att inaktivera ett l\(:osenord f\(:or ett konto\&. Det kommer att ta bort det angivna kontots l\(:osenord\&.
+.RE
+.PP
+\fB\-e\fR, \fB\-\-expire\fR
+.RS 4
+L\(:osenordet f\(:or ett konto s\(:atts omedelbart som utg\(oanget\&. Detta kan tvinga en anv\(:andare att \(:andra sitt l\(:osenord vid n\(:asta inloggningsf\(:ors\(:ok\&.
+.RE
+.PP
+\fB\-h\fR, \fB\-\-help\fR
+.RS 4
+Visa hj\(:alpmeddelande och avsluta\&.
+.RE
+.PP
+\fB\-i\fR, \fB\-\-inactive\fR\ \&\fIINAKTIV\fR
+.RS 4
+Denna flagga anv\(:ands f\(:or att inaktivera ett konto efter att l\(:osenordet har varit utg\(oanget i ett antal dagar\&. Efter att ett anv\(:andarkonto har haft ett utg\(oanget l\(:osenord i
+\fIINAKTIV\fR
+dagar f\(oar anv\(:andaren inte l\(:angre logga in med detta konto\&.
+.RE
+.PP
+\fB\-k\fR, \fB\-\-keep\-tokens\fR
+.RS 4
+Indicate password change should be performed only for expired authentication tokens (passwords)\&. The user wishes to keep their non\-expired tokens as before\&.
+.RE
+.PP
+\fB\-l\fR, \fB\-\-lock\fR
+.RS 4
+Lock the password of the named account\&. This option disables a password by changing it to a value which matches no possible encrypted value (it adds a \(aa!\(aa at the beginning of the password)\&.
+.sp
+Note that this does not disable the account\&. The user may still be able to login using another authentication token (e\&.g\&. an SSH key)\&. To disable the account, administrators should use
+\fBusermod \-\-expiredate 1\fR
+(this set the account\*(Aqs expire date to Jan 2, 1970)\&.
+.sp
+Users with a locked password are not allowed to change their password\&.
+.RE
+.PP
+\fB\-n\fR, \fB\-\-mindays\fR\ \&\fIMIN_DAYS\fR
+.RS 4
+S\(:atter minimalt antal dagar mellan l\(:osenords\(:andringar till
+\fIMIN_DAGAR\fR\&. Ett nollv\(:arde f\(:or detta f\(:alt betyder att anv\(:andaren kan \(:andra sitt l\(:osenord n\(:ar som helst\&.
+.RE
+.PP
+\fB\-q\fR, \fB\-\-quiet\fR
+.RS 4
+Tyst l\(:age\&.
+.RE
+.PP
+\fB\-r\fR, \fB\-\-repository\fR\ \&\fIF\(:ORR\(oAD\fR
+.RS 4
+change password in
+\fIREPOSITORY\fR
+repository
+.RE
+.PP
+\fB\-R\fR, \fB\-\-root\fR\ \&\fICHROOT_DIR\fR
+.RS 4
+Apply changes in the
+\fICHROOT_DIR\fR
+directory and use the configuration files from the
+\fICHROOT_DIR\fR
+directory\&.
+.RE
+.PP
+\fB\-S\fR, \fB\-\-status\fR
+.RS 4
+Display account status information\&. The status information consists of 7 fields\&. The first field is the user\*(Aqs login name\&. The second field indicates if the user account has a locked password (L), has no password (NP), or has a usable password (P)\&. The third field gives the date of the last password change\&. The next four fields are the minimum age, maximum age, warning period, and inactivity period for the password\&. These ages are expressed in days\&.
+.RE
+.PP
+\fB\-u\fR, \fB\-\-unlock\fR
+.RS 4
+Unlock the password of the named account\&. This option re\-enables a password by changing the password back to its previous value (to the value before using the
+\fB\-l\fR
+option)\&.
+.RE
+.PP
+\fB\-w\fR, \fB\-\-warndays\fR\ \&\fIVARN_DAGAR\fR
+.RS 4
+S\(:atter antalet dagar f\(:or varning f\(:ore ett l\(:osenord beh\(:over \(:andras\&. Flaggan
+\fIVARN_DAGAR\fR
+\(:ar antalet dagar f\(:ore anv\(:andaren varnas om att l\(:osenordet \(:ar p\(oa v\(:ag att bli utg\(oanget\&.
+.RE
+.PP
+\fB\-x\fR, \fB\-\-maxdays\fR\ \&\fIMAX_DAGAR\fR
+.RS 4
+S\(:atter maximalt antal dagar som ett l\(:osenord ska vara giltigt\&. Efter
+\fIMAX_DAGAR\fR
+kr\(:avs det att l\(:osenordet \(:andras\&.
+.RE
+.SH "T\(:ANK P\(oA"
+.PP
+Password complexity checking may vary from site to site\&. The user is urged to select a password as complex as he or she feels comfortable with\&.
+.PP
+Users may not be able to change their password on a system if NIS is enabled and they are not logged into the NIS server\&.
+.SH "CONFIGURATION"
+.PP
+The following configuration variables in
+/etc/login\&.defs
+change the behavior of this tool:
+.PP
+\fBENCRYPT_METHOD\fR (string)
+.RS 4
+This defines the system default encryption algorithm for encrypting passwords (if no algorithm are specified on the command line)\&.
+.sp
+It can take one of these values:
+\fIDES\fR
+(default),
+\fIMD5\fR, \fISHA256\fR, \fISHA512\fR\&.
+.sp
+Note: this parameter overrides the
+\fBMD5_CRYPT_ENAB\fR
+variable\&.
+.RE
+.PP
+\fBMD5_CRYPT_ENAB\fR (boolean)
+.RS 4
+Indicate if passwords must be encrypted using the MD5\-based algorithm\&. If set to
+\fIyes\fR, new passwords will be encrypted using the MD5\-based algorithm compatible with the one used by recent releases of FreeBSD\&. It supports passwords of unlimited length and longer salt strings\&. Set to
+\fIno\fR
+if you need to copy encrypted passwords to other systems which don\*(Aqt understand the new algorithm\&. Default is
+\fIno\fR\&.
+.sp
+This variable is superseded by the
+\fBENCRYPT_METHOD\fR
+variable or by any command line option used to configure the encryption algorithm\&.
+.sp
+This variable is deprecated\&. You should use
+\fBENCRYPT_METHOD\fR\&.
+.RE
+.PP
+\fBOBSCURE_CHECKS_ENAB\fR (boolean)
+.RS 4
+Enable additional checks upon password changes\&.
+.RE
+.PP
+\fBPASS_ALWAYS_WARN\fR (boolean)
+.RS 4
+Warn about weak passwords (but still allow them) if you are root\&.
+.RE
+.PP
+\fBPASS_CHANGE_TRIES\fR (number)
+.RS 4
+Maximum number of attempts to change password if rejected (too easy)\&.
+.RE
+.PP
+\fBPASS_MAX_LEN\fR (number), \fBPASS_MIN_LEN\fR (number)
+.RS 4
+Number of significant characters in the password for crypt()\&.
+\fBPASS_MAX_LEN\fR
+is 8 by default\&. Don\*(Aqt change unless your crypt() is better\&. This is ignored if
+\fBMD5_CRYPT_ENAB\fR
+set to
+\fIyes\fR\&.
+.RE
+.PP
+\fBSHA_CRYPT_MIN_ROUNDS\fR (number), \fBSHA_CRYPT_MAX_ROUNDS\fR (number)
+.RS 4
+When
+\fBENCRYPT_METHOD\fR
+is set to
+\fISHA256\fR
+or
+\fISHA512\fR, this defines the number of SHA rounds used by the encryption algorithm by default (when the number of rounds is not specified on the command line)\&.
+.sp
+With a lot of rounds, it is more difficult to brute forcing the password\&. But note also that more CPU resources will be needed to authenticate users\&.
+.sp
+If not specified, the libc will choose the default number of rounds (5000)\&.
+.sp
+The values must be inside the 1000\-999,999,999 range\&.
+.sp
+If only one of the
+\fBSHA_CRYPT_MIN_ROUNDS\fR
+or
+\fBSHA_CRYPT_MAX_ROUNDS\fR
+values is set, then this value will be used\&.
+.sp
+If
+\fBSHA_CRYPT_MIN_ROUNDS\fR
+>
+\fBSHA_CRYPT_MAX_ROUNDS\fR, the highest value will be used\&.
+.RE
+.SH "FILER"
+.PP
+/etc/passwd
+.RS 4
+Anv\(:andarkontoinformation\&.
+.RE
+.PP
+/etc/shadow
+.RS 4
+S\(:aker anv\(:andarkontoinformation\&.
+.RE
+.PP
+/etc/login\&.defs
+.RS 4
+Shadow password suite configuration\&.
+.RE
+.SH "AVSLUTNINGSV\(:ARDEN"
+.PP
+Kommandot
+\fBpasswd\fR
+avslutas med f\(:oljande v\(:arden:
+.PP
+\fI0\fR
+.RS 4
+lyckad
+.RE
+.PP
+\fI1\fR
+.RS 4
+\(oatkomst nekad
+.RE
+.PP
+\fI2\fR
+.RS 4
+ogiltig kombination av flaggor
+.RE
+.PP
+\fI3\fR
+.RS 4
+ov\(:antat fel, ingenting har genomf\(:orts
+.RE
+.PP
+\fI4\fR
+.RS 4
+ov\(:antat fel, filen
+passwd
+saknas
+.RE
+.PP
+\fI5\fR
+.RS 4
+Filen
+passwd
+\(:ar upptagen, f\(:ors\(:ok igen
+.RE
+.PP
+\fI6\fR
+.RS 4
+ogiltigt argument till flagga
+.RE
+.SH "SE OCKS\(oA"
+.PP
+\fBchpasswd\fR(8),
+\fBpasswd\fR(5),
+\fBshadow\fR(5),
+\fBlogin.defs\fR(5),\fBusermod\fR(8)\&.