[clug] Ever received a .dat file from an <other OS> user?

[Peter Barker]

On Sat, 16 Jan 2010, Andrew Janke wrote:

>>> [ -n "$dir_i_do_not_want" ] && [ -n "$subdir_i_do_not_want" ] && rm -rf
>>> $dir_i_do_not_want/$subdir_i_do_not_want
>>
>> Yes, that certainly a safe way to handle the situation, and what I usually
>> do.  Somewhat verbose, 'though!
>
> Unless I (as the naughty user) set both variables to '/'.   Or the
> first to / and the second to .
>
> (or did I miss something?)

Not trying to protect against malicious users here.

Really trying to protect against, 'rm -rf 
"$dr_i_do_not_want/$subdr_i_do_not want"' (cf 'rm -rf 
"$dir_i_do_not_want/$subdir_i_do_not_want"'), or any one of the related 
ways to screw yourself over in shell scripting.  Where's my "use strict;"? 
:-)

> Andrew Janke

Yours,
-- 
Peter Barker                          |   Programmer,Sysadmin,Geek.
pbarker at barker.dropbear.id.au	      |   You need a bigger hammer.
:: It's a hack! Expect underscores! - Nigel Williams