LIMITS(5)                                               LIMITS(5)

NAME
       limits - Resource limits definition

DESCRIPTION
       The  limits  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.

       By default no quotas are imposed on 'root'. In fact, there
       is  no  way  to  impose limits via this procedure to root-
       equiv accounts (accounts with UID 0).

       Each line describes a limit for a user in the form:

       user LIMITS_STRING

       The LIMITS_STRING is a string of a  concatenated  list  of
       resource  limits.  Each limit consists of a letter identi-
       fier followed by a numerical limit.

       The valid identifiers are:

       A: max address space (KB)
       C: max core file size (KB)
       D: max data size (KB)
       F: maximum filesize (KB)
       M: max locked-in-memory address space (KB)
       N: max number of open files
       R: max resident set size (KB)
       S: max stack size (KB)
       T: max CPU time (MIN)
       U: max number of processes
       L: max number of logins for this user

       For example, L2D2048N5 is a valid LIMITS_STRING. For read-
       ing convenience, the following entries are equivalent:

       username L2D2048N5
       username L2 D2048 N5

       Be  aware that after username the rest of the line is con-
       sidered a limit string, thus comments are not  allowed.  A
       invalid limits string will be rejected (not considered) by
       the login program.

       The default entry is denoted by username "*". If you  have
       multiple  default  entries  in  your LIMITS_FILE, then the
       last one will be used as the default entry.

       To completely disable limits for a user, a single dash "-"
       will do.

       Also,  please  note  that  all  limit settings are set PER

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LIMITS(5)                                               LIMITS(5)

       LOGIN.  They are not global, nor are they permanent.  Per-
       haps  global  limits will come, but for now this will have
       to do ;)

FILES
       /etc/limits

SEE ALSO
       login(1)

AUTHOR
       Cristian Gafton (gafton@sorosis.ro)

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