On 25/07/05, Jon Drews <[EMAIL PROTECTED]> wrote: > On 7/25/05, Abel Talaversn Estevez <[EMAIL PROTECTED]> wrote: > > Hi all, > > > > I need to create a particular but simple shell for a firewall running > > OpenBSD > > 3.6. The idea is create a user whose shell is a very limited one. This shell > > or command line interpreter (CLI) must have permissions only in the home > > directory. > > Hi: > > Operating ksh in restricted mode may fulfill your needs. Here from > the man page for ksh (this is the public domain Korn Shell in > OpenBSD): > > -r Restricted shell. A shell is ``restricted'' if this option is > used or if either the basename the shell was invoked with or the > SHELL parameter match the pattern ``*r*sh'' (e.g. rsh, rksh, > rpdksh). The following restrictions come into effect after the > shell processes any profile and ENV files: > > o The cd command is disabled. > o The SHELL, ENV, and PATH parameters cannot be changed. > o Command names can't be specified with absolute or relative > paths. > o The -p option of the built-in command command can't be used. > o Redirections that create files can't be used (i.e. `>', `>|', > `>>', `<>'). > > -- > Kind regards, > Jonathan > >
Hi, If you want to "create your own shell" (although I'm sure you don't have to), then this book will tell you how. http://www.amazon.com/exec/obidos/tg/sim-explorer/explore-items/-/0131411543/0/101/1/none/purchase/ref%3Dpd%5Fsxp%5Fr0/104-3894848-1007109 It's a good read too. Best Regards Edd
