ulimit(2)ulimit(2)NAMEulimit() - get and set user limits
The ANSI C "" construct denotes a variable length argument list whose
optional [or required] members are given in the associated comment
provides for control over process limits. Available values for cmd
Get the file size limit of the process.
The limit is in units of 512-byte blocks and
is inherited by child processes. Files of
any size can be read. The optional second
argument is not used.
Set the file size limit of the process to the value
of the optional second argument which is
taken as a long. Any process can decrease
this limit, but only a process with the
privilege can increase the limit. Note that
the limit must be specified in units of
Get the maximum possible break value
(see brk(2)). Depending on system resources
such as swap space, this maximum might not
be attainable at a given time. The optional
second argument is not used.
Some or all of the actions associated with this system call require the
privilege. Processes owned by the superuser have this privilege. Pro‐
cesses owned by other users may have this privilege, depending on sys‐
tem configuration. See privileges(5) for more information about privi‐
leged access on systems that support fine-grained privileges.
Upon successful completion, a non-negative value is returned. Errors
return a −1, with set to indicate the error.
fails if one or more of the following conditions is true.
cmd is not in the correct range.
fails and the limit is unchanged if a process
without the privilege attempts to increase its
file size limit.
SEE ALSObrk(2), write(2), privileges(5).