NAME

       prlimit - get and set process resource limits

SYNOPSIS

       prlimit [options] [--resource[=limits] [--pid PID]

       prlimit [options] [--resource[=limits] command [argument...]

DESCRIPTION

       Given a process id and one or more resources, prlimit tries to retrieve and/or modify the limits.

       When command is given, prlimit will run this command with the given arguments.

       The limits parameter is composed of a soft and a hard value, separated by a colon (:), in order to modify
       the existing values.  If no limits are given, prlimit will display the current values.   If  one  of  the
       values  is  not  given,  then  the existing one will be used.  To specify the unlimited or infinity limit
       (RLIM_INFINITY), the -1 or 'unlimited' string can be passed.

       Because of the nature of limits, the soft limit must be lower or equal to the high limit (also called the
       ceiling).  To see all available resource limits, refer to the RESOURCE OPTIONS section.

       soft:hard    Specify both limits.

       soft:        Specify only the soft limit.

       :hard        Specify only the hard limit.

       value        Specify both limits to the same value.

GENERAL OPTIONS

       -h, --help
              Display help text and exit.

       --noheadings
              Do not print a header line.

       -o, --output list
              Define  the  output  columns to use.  If no output arrangement is specified, then a default set is
              used.  Use --help to get a list of all supported columns.

       -p, --pid
              Specify the process id; if none is given, the running process will be used.

       --raw  Use the raw output format.

       --verbose
              Verbose mode.

       -V, --version
              Display version information and exit.

RESOURCE OPTIONS

       -c, --core[=limits]
              Maximum size of a core file.

       -d, --data[=limits]
              Maximum data size.

       -e, --nice[=limits]
              Maximum nice priority allowed to raise.

       -f, --fsize[=limits]
              Maximum file size.

       -i, --sigpending[=limits]
              Maximum number of pending signals.

       -l, --memlock[=limits]
              Maximum locked-in-memory address space.

       -m, --rss[=limits]
              Maximum Resident Set Size (RSS).

       -n, --nofile[=limits]
              Maximum number of open files.

       -q, --msgqueue[=limits]
              Maximum number of bytes in POSIX message queues.

       -r, --rtprio[=limits]
              Maximum real-time priority.

       -s, --stack[=limits]
              Maximum size of the stack.

       -t, --cpu[=limits]
              CPU time, in seconds.

       -u, --nproc[=limits]
              Maximum number of processes.

       -v, --as[=limits]
              Address space limit.

       -x, --locks[=limits]
              Maximum number of file locks held.

       -y, --rttime[=limits]
              Timeout for real-time tasks.

EXAMPLES

       prlimit --pid 13134
              Display limit values for all current resources.

       prlimit --pid 13134 --rss --nofile=1024:4095
              Display the limits of the RSS, and set the soft and hard limits for the number of  open  files  to
              1024 and 4095, respectively.

       prlimit --pid 13134 --nproc=512:
              Modify only the soft limit for the number of processes.

       prlimit --pid $$ --nproc=unlimited
              Set  for  the  current  process  both  the  soft and ceiling values for the number of processes to
              unlimited.

       prlimit --cpu=10 sort -u hugefile
              Set both the soft and hard CPU time limit to ten seconds and run 'sort'.

SEE ALSO

       prlimit(2), ulimit(1)

NOTES

       The prlimit system call is supported since Linux 2.6.36, older kernels will break this program.

AUTHORS

       Davidlohr Bueso <dave@gnu.org> - In memory of Dennis M. Ritchie.

AVAILABILITY

       The   prlimit   command   is   part   of   the    util-linux    package    and    is    available    from
       ftp://ftp.kernel.org/pub/linux/utils/util-linux/.