[nzlug] File Server Cost Analysis

[Jasper Bryant-Greene]

Michael Adams wrote:
> On Tue, 20 Mar 2007 11:09:27 +1200 (NZST)
> Matthew Poole wrote:
>> There're a few tests you can do in bash to check for existence. -d
>> checks for a directory, -f tests for a file, -e tests simply for
>> existence.. So you could have a file on the backup device that's not
>> writeable, so it can't be deleted, and just check to see if it's
>> there. Something like if [ ! -e "/path/to/file" ]; then echo "Backup
>> device not present"; exit 0; fi
>>
> 
> So flipped over it looks like.
> 
> if [-e "/path/to/file" ];
> 	# run backup here
> 	exit 0;
> fi
> 

Don't forget the space after [. [ is a command just like any other and
therefore requires a space before it's args :)

Also 'then' is not optional.

-- 
Jasper Bryant-Greene               0800 425 286
Director                           jasper at albumltd.co.nz
Album Limited                      www.albumltd.co.nz