Provided by: util-linux_2.31.1-0.4ubuntu3.7_amd64 bug


       prlimit - get and set process resource limits


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

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


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

       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.


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

              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 mode.

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


       -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.


       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'.


       ulimit(1), prlimit(2)


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


       Davidlohr Bueso <> - In memory of Dennis M. Ritchie.


       The  prlimit  command  is  part  of  the  util-linux  package  and   is   available   from