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Top Forums UNIX for Dummies Questions & Answers Expanding variables with Ed Bash 3.2.33 Post 302339885 by de_la_espada on Friday 31st of July 2009 03:58:26 PM
Old 07-31-2009
Expanding variables with Ed Bash 3.2.33

Hi,

The following code finds the line containing fruits in test.txt and replaces instances of apple with banana.

Code:
   ed -s test.txt <<< $'/fruits/s/apple/banana/g\nw'

What I want to do is put variables in the place of fruits, apple and banana.

I have tried replacing ' with " to get the variables to expand, but to no avail.

Code:
ed -s accounts.txt <<< $"/$account/s/$balance/$newBalance/g\nw"

Also
Code:
ed -s accounts.txt <<< $"/${account}/s/${balance}/${newBalance}/g\nw"

And trying to echo them, but still no luck.


I'm using GNU bash, version 3.2.33(1)-release (i386-redhat-linux-gnu)
 

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ASORT(3)								 1								  ASORT(3)

asort - Sort an array and maintain index association

SYNOPSIS
bool asort (array &$array, [int $sort_flags = SORT_REGULAR]) DESCRIPTION
This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant. PARAMETERS
o $array - The input array. o $sort_flags - You may modify the behavior of the sort using the optional parameter $sort_flags, for details see sort(3). RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 asort(3) example <?php $fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); asort($fruits); foreach ($fruits as $key => $val) { echo "$key = $val "; } ?> The above example will output: c = apple b = banana d = lemon a = orange The fruits have been sorted in alphabetical order, and the index associated with each element has been maintained. SEE ALSO
arsort(3), The comparison of array sorting functions. PHP Documentation Group ASORT(3)
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