ulimit

[Anil Raj_1]

Hi All,

Can I know more about 'ulimit'

Thanks

Anil

[Deoncia Grayson_1]

ulimit command is used to limit user resources. If you used the -a opton is lists current resource limits. Its very useful if you want to specify a limit for resources,
ex: if you don't want the shell to create a core file larger than 1024 blocks , you can use the following command:

ulimit -c 1024
ulimit -a

[John Poff]

Hi,

The 'ulimit' command lets you set or display resource limits.

One place to find out about it is in the man page for the POSIX shell. Do a 'man sh-posix' and search for 'ulimit'.

JP

[A. Clay Stephenson]

Not unless you define it a bit better. Are you referring to the file size ulimit? (most common); core dump limit? number of file descriptors? limit of stack or data areas?

Ulimit can apply to all of these and it epends upon which shell you are running as to how many of these can be changed. There are also "hard" limits (set in the kernel) which cannot be exceeded and "soft" limits which can be increased up to the "hard" value. Man sh-posix (search for ulimit) and man 2 ulimit for details. These man pages should tell you everything you need to know -- or at least get you to the point of better asking your question.

[RAC_1]

man sh-posix for details.
ulimit -Sa -- to know soft limits
ulimit -Ha -- Hard limits

ulimit -c xx (core file size)
ulimit -n xx (no. of file descriptors)
ulimit -s xx (stack size)
ulimit -d xx (data size)
ulimit -f xx (file blocks)
ulimit -t xx (time in secs)

Anil

[G. Vrijhoeven]

Hi Anil,

ulimit, for the korn shell:

http://docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B2355-90046/B2355-90046_top.html&con=/hpux/onlinedocs/B2355-90046/00/01/120-con.html&toc=/hpux/onlinedocs/B2355-90046/00/01/120-toc.html&searchterms=ulimit&queryid=20041026-133909

ulimit system call:
http://docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B3921-90010/B3921-90010_top.html&con=/hpux/onlinedocs/B3921-90010/00/11/1167-con.html&toc=/hpux/onlinedocs/B3921-90010/00/11/1167-toc.html&searchterms=ulimit&queryid=20041026-134440

HTH,

Gideon

[Geoff Wild]

You sure can:

ulimit - get and set user limits


You can also use it to limit the size of core dumps:

To completely suppress core dumps:

Bourne-style shells: "ulimit -c 0"
C-style shells: "limit coredumpsize 0"

If you want to limit dumps to a specific size, specify a number instead of 0, in blocks for Bourne-style shells, or kilobytes for C-style shells.


Rgds...Geoff

BTW : a google for ulimit unix returns 29,800 pages.

[Anil Raj_1]

hi all,

thanks for the info.

regards
Anil