I had not seen the ulimit command before so was checking it out before trying it and was surprised by the lack of information from the usual sources ( man, info, --help option, which ulimit, locate ulimit, etc). I finally got the info from man bash. This is a builtin command to bash and presumeably to derivative and most ancestral shells of bash. Oh and I learned that ulimit -a reports on all the limits it knows about.

During this I also learned that my system apparently does not contain certain other shells that are commonly used. I know I can easily add them but find it curious. Especially after I discovered /etc/shells which is supposedly a list of "valid" login shells and that it lists shells which are not on my system.

1-I am curious if anyone knows or if there is any simple way to find out what shells incorporate ulimit or which do not.

2-What really is the utility of /etc/shells? If one creates a new [derivative] shell, do you need to add it to the list somehow before it can be a login shell or perhaps the intent is to prevent said shell from being a login shell unless until ... something?

On 5/19/06, Victor Odhner <vodhner@cox.net> wrote:

Nathan England wrote:

>That is a great idea, but this addresses nothing about size
>limits. I still have yet to successfully copy anything over
>2GB using dd. It always dies giving me a file size error.
>I'll try again, maybe dd has been updated?
>
>
Your "file size error" may be a ulimit problem.  Try a ulimit -f
command and see if your filesize limit is set to 2 GB.  If so, set it
bigger . . .

Vic

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