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Re: Evaluating a variable within a variable


From: Matthew Woehlke
Subject: Re: Evaluating a variable within a variable
Date: Tue, 23 Oct 2007 12:01:18 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.6) Gecko/20070728 Thunderbird/2.0.0.6 Mnenhy/0.7.5.0

Paul Jarc wrote:
TimtheEagle <tim.cheyne@safecom.co.nz> wrote:
main_auth=7

f=main
t=auth

ile=$f"_"$t

echo $ile

Either: echo "${!ile}"

Not portable.

Or:     eval "echo \"\$$ile\""

Portable (even to Solaris /bin/sh which is not POSIX).

Not saying which you should use, just something to be aware of.

--
Matthew
There's no place like ~.





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