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Date: Fri, 11 Nov 2005 21:47:35 +0100
From: Alexander Skwar <listen@alexander.skwar.name>
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Subject: Re: [gentoo-user] [OT] Bash scripting 2
References: <200511111857.40664.peper@aster.pl>
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Peper schrieb:
> Hello,
> How can i check whether i can create or overwrite a file?

You need write access on the directory for creating files and
on the file for overwriting.

> For example:
> If /etc/conf.d/net cannot be overwritten or created it return false.

Use "test" or "[" or "[[".

> Overwriting test would be -w /etc/conf.d/net,

Yep.

> but how can i check if i can 
> create this file?

[[ -w `dirname /etc/conf.d/net` ]] && echo can create file

> I could check whether i can create new files 
> in /etc/conf.d,

Yep.

> but how can i get /etc/conf.d/ from /etc/conf.d/net ?

dirname. Or if you've got that in an environment variable,
you use "Parameter Expansion".

file=/etc/conf.d/net
echo ${file%/*}

Alexander Skwar
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