NAME

       qhold - hold back Grid Engine jobs from execution

SYNTAX

       qhold [-h {u|o|s},...]  [-help] [job/task_id_list]

       qhold [-h {u|o|s},...]  [-help] -u user_list

DESCRIPTION

       Qhold  provides  a means for a user/operator/manager to place so called holds on one or more jobs pending
       scheduling for execution.  As long as any type of hold is assigned to a job, the job is not eligible  for
       scheduling.

       Holds can be removed with the qrls(1) or qalter(1) command.

       There are three different types of holds:

       user   User holds can be assigned and removed by managers, operators and the owner of the jobs.

       operator
              Operator holds can be assigned and removed by managers and operators.

       system System holds can be assigned and removed by managers only.

       If no hold type is specified with the -h option (see below) the user hold is assumed by default.

       An alternate way to assign holds to jobs is the qsub(1) or the qalter(1) command (see the -h option).

OPTIONS

       -h {u|o|s},...
              Assign a u(ser), o(perator) or s(system) hold, or a combination thereof, to one or more jobs.

       -help  Prints a listing of all options.

       -u username,...
              Changes  are  only  made  on  those  jobs  which  were submitted by users specified in the list of
              usernames.  Managers are allowed to use the qhold -u "*" command to set a hold for all jobs of all
              users.

              If a user uses the -u switch, the user may specify an additional job/task_id_list.

       job/task_id_list
              Specified by the following form:

                  job_id[.task_range][,job_id[.task_range],...]

              If present, the task_range restricts the effect of the qhold operation to the array job task range
              specified as suffix to the job id (see the -t option to  qsub(1)  for  further  details  on  array
              jobs).

              The task range specifier has the form n[-m[:s]]. The range may be a single number, a  simple range
              of the form n-m or a range with a step size s.

              Instead of job/task_id_list it is possible to use the keyword 'all' to modify the hold  state  for
              all jobs of the current user.

ENVIRONMENT VARIABLES

       SGE_ROOT       Specifies the location of the Grid Engine standard configuration files.

       SGE_CELL       If  set,  specifies the default Grid Engine cell. To address a Grid Engine cell qhold uses
                      (in the order of precedence):

                             The name of the cell specified in the environment variable SGE_CELL, if it is set.

                             The name of the default cell, i.e. default.

       SGE_DEBUG_LEVEL
                      If set, specifies that debug information should be written  to  stderr.  In  addition  the
                      level of detail in which debug information is generated is defined.

       SGE_QMASTER_PORT
                      If  set,  specifies  the  tcp  port  on  which  sge_qmaster(8)  is  expected to listen for
                      communication requests.  Most installations will use a services map entry for the  service
                      "sge_qmaster" instead to define that port.

SEE ALSO

       sge_intro(1), qalter(1), qrls(1), qsub(1).

COPYRIGHT

       See sge_intro(1) for a full statement of rights and permissions.