Gentoo Archives: gentoo-dev

From: Fabian Groffen <grobian@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] Re: RFC: postgresql.eselect
Date: Wed, 30 Mar 2011 07:58:59
Message-Id: 20110330075818.GH90632@gentoo.org
In Reply to: [gentoo-dev] Re: RFC: postgresql.eselect by Ryan Hill
1 On 29-03-2011 22:35:48 -0600, Ryan Hill wrote:
2 > > Because 'ls' would complain that files didn't exist, such as lib*.dylib
3 > > when on a Linux system. It doesn't matter. But, using 'find' avoids this
4 > > mess.
5 >
6 > Never use ls to get filenames in a script. Instead of
7 >
8 > for link_source in $(eval ls ${source_dir} 2> /dev/null) ; do
9 >
10 > just use
11 >
12 > for link_source in "${source_dir}"/* ; do
13 >
14 > I see you already fixed this one, but you do some funky stuff with ls -d
15 > earlier on.
16
17 Make sure though, when you use a glob, that you check for the asterisk.
18
19 When there are no matches, bash assumes you meant the literal '*' and
20 hence will return "/foo/bar/*" in link_source.
21 So make sure you check the existence of whatever is in link_source
22 before using it.
23
24
25 --
26 Fabian Groffen
27 Gentoo on a different level

Replies

Subject Author
Re: [gentoo-dev] Re: RFC: postgresql.eselect "Aaron W. Swenson" <titanofold@g.o>