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Re: best way to test for empty dir?
From: |
Greg Wooledge |
Subject: |
Re: best way to test for empty dir? |
Date: |
Thu, 10 Dec 2009 16:34:44 -0500 |
User-agent: |
Mutt/1.4.2.3i |
On Thu, Dec 10, 2009 at 05:37:04PM -0200, Matias A. Fonzo wrote:
> Maybe you want the Chris F.A Johnson's implementation [1]:
>
> set -- "/tmp/emptydir"/*
> [[ -f $1 ]] && echo non-empty || echo empty;
>
> References:
> [1]
> http://www.issociate.de/board/goto/866027/checking_if_a_directory_is_empty.html
The -f in the [[...]] should be -e, or it may give erroneous results if
the first thing matched by the glob happens to be a subdirectory (or
anything other than a plain file).
It's just a positional-parameter variant of:
files=("/tmp/emptydir"/*)
if [[ -e ${files[0]} ]] ...
Has the disadvantage that it clobbers the positional parameters, which
maybe you still want. Has the advantage that it'll work in ksh88,
which doesn't support the array=(...) syntax. They're both non-POSIX
though (due to the [[...]]). Of course, the PP variant is easier to
convert into a working POSIX version, since POSIX has no guarantee of
arrays.
- best way to test for empty dir?, Marc Herbert, 2009/12/10
- Re: best way to test for empty dir?, Greg Wooledge, 2009/12/10
- Re: best way to test for empty dir?, Matias A. Fonzo, 2009/12/10
- Re: best way to test for empty dir?,
Greg Wooledge <=
- Re: best way to test for empty dir?, Chris F.A. Johnson, 2009/12/10
- Message not available
- Re: best way to test for empty dir?, pk, 2009/12/10
- Re: best way to test for empty dir?, pk, 2009/12/10
- Re: best way to test for empty dir?, Marc Herbert, 2009/12/11
- Message not available
- Re: best way to test for empty dir?, pk, 2009/12/11
- Re: best way to test for empty dir?, Sven Mascheck, 2009/12/11
- Re: best way to test for empty dir?, Chris F.A. Johnson, 2009/12/11
- Re: best way to test for empty dir?, Sven Mascheck, 2009/12/11
- Re: best way to test for empty dir?, Marc Herbert, 2009/12/11