ulimit - data limit

[Vitek Pepas_1]

Is it possible to increase 'ulimit -d' above 65536?
Where can I find description of all 'ulimit' options?
Can I change any limits other than file size in ksh,
can I at least display them (there is no 'ulimit -a')?

[Zeng Qing yong]

If you use 'ulimit -a', you'll be able to have a list of all limitation. Use
other options to change the value if you have enough privilege.

Queyon

[Atif Malik_2]

For Korn Shell (ksh), ulimit only affects the filesize limit which is 4194394.
and this is the value for unlimited under ksh.

For POSIX Shell (sh), you can type 'ulimit -a' to list the variables that can
be set:

mowgli $ sh
mowgli $ ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) 65536
stack(kbytes) 8192
memory(kbytes) unlimited
coredump(blocks) 4194303
nofiles(descriptors) 60

data: Max is determined by kernel parameter maxdsiz
stack: Max is determined by kernel parameter maxssiz
nofiles: Max is determined by kernel paramter maxfiles

The C shell (csh) has similar variables; which are set by limit command:

mowgli $ csh
mowgli 22: limit
cputime unlimited
filesize unlimited
datasize 65536 kbytes
stacksize 8192 kbytes
coredumpsize 2097151 kbytes
descriptors 60 files
memoryuse unlimited

Therefore, to answer your question. Yes, you can increase the ulimit -d by
changing the kernel parameters which requires a reboot.

Hope this helps,
Atif