'\" t
.\"     Title: limits
.\"    Author: Luca Berra
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 08.11.2022
.\"    Manual: File Formats and Configuration Files
.\"    Source: shadow-utils 4.13
.\"  Language: German
.\"
.TH "LIMITS" "5" "08.11.2022" "shadow\-utils 4\&.13" "File Formats and Configuration"
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.SH "NAME"
limits \- Festlegung von Resourcenbeschr\(:ankungen
.SH "BESCHREIBUNG"
.PP
The
\fIlimits\fR
file (/etc/limits
by default or LIMITS_FILE defined
config\&.h) describes the resource limits you wish to impose\&. It should be owned by root and readable by root account only\&.
.PP
Standardm\(:a\(ssig bestehen f\(:ur Root keine Einschr\(:ankungen\&. Tats\(:achlich gibt es keine M\(:oglichkeit, mit diesem Verfahren Root\-Konten (Konten mit der UID 0) Beschr\(:ankungen aufzuerlegen\&.
.PP
Jede Zeile beschreibt eine Beschr\(:ankung f\(:ur einen Benutzer in der Form:
.PP
\fIBenutzer BESCHR\(:ANKUNGSZEICHENKETTE\fR
.PP
oder in der Form:
.PP
\fI@Gruppe BESCHR\(:ANKUNGSZEICHENKETTE\fR
.PP
The
\fILIMITS_STRING\fR
is a string of a concatenated list of resource limits\&. Each limit consists of a letter identifier followed by a numerical limit\&.
.PP
G\(:ultige Kennungen sind:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
A: maximaler Adressraum (KB)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
C: maximale Gr\(:o\(sse der Speicherabbild\-Datei
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
D: maximale Datengr\(:o\(sse (KB)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
F: maximum file size (KB)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
K: file creation mask, set by
\fBumask\fR(2)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
I: Maximaler Wert von nice (0 bis 39, was in 20 bis \-19 \(:ubersetzt wird)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
L: maximale Anzahl von Logins f\(:ur diesen Benutzer
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
M: maximaler gesperrter Adressbereich im Speicher (KB)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
N: maximale Anzahl offener Dateien
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
O: Maximale Echtzeit\-Priorit\(:at
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
P: process priority, set by
\fBsetpriority\fR(2)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
R: maximale Resident Set Size (KB)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
S: maximale Gr\(:o\(sse des Stapelverarbeitungsspeichers (KB)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
T: maximale CPU\-Zeit (Min)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
U: maximale Anzahl von Prozessen
.RE
.PP
For example,
\fIL2D2048N5\fR
is a valid
\fILIMITS_STRING\fR\&. For reading convenience, the following entries are equivalent:
.sp
.if n \{\
.RS 4
.\}
.nf
      username L2D2048N5
      username L2 D2048 N5
    
.fi
.if n \{\
.RE
.\}
.PP
Be aware that after
\fIusername\fR
the rest of the line is considered a limit string, thus comments are not allowed\&. An invalid limits string will be rejected (not considered) by the
\fBlogin\fR
program\&.
.PP
The default entry is denoted by username "\fI*\fR"\&. If you have multiple
\fIdefault\fR
entries in your
\fILIMITS_FILE\fR, then the last one will be used as the default entry\&.
.PP
The limits specified in the form "\fI@group\fR" apply to the members of the specified
\fIgroup\fR\&.
.PP
If more than one line with limits for a user exist, only the first line for this user will be considered\&.
.PP
If no lines are specified for a user, the last
\fI@group\fR
line matching a group whose the user is a member of will be considered, or the last line with default limits if no groups contain the user\&.
.PP
To completely disable limits for a user, a single dash "\fI\-\fR" will do\&.
.PP
To disable a limit for a user, a single dash "\fI\-\fR" can be used instead of the numerical value for this limit\&.
.PP
Ber\(:ucksichtigen Sie auch, dass alle Beschr\(:ankungen nur JE ANMELDUNG gelten\&. Sie sind nicht global und auch nicht dauerhaft\&. Vielleicht wird es einmal globale Beschr\(:ankungen geben, f\(:ur jetzt muss dies aber reichen ;)
.SH "DATEIEN"
.PP
/etc/limits
.RS 4
.RE
.SH "SIEHE AUCH"
.PP
\fBlogin\fR(1),
\fBsetpriority\fR(2),
\fBsetrlimit\fR(2)\&.