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How can I insert a string before a matched string. Suppose I want to insert a string a before "if (PROTOCOL == "https://")" string. Please tell me how can I do this??

or

How to search and replace a string like 

function __construct($url='', $loc='')
{

to 

function __construct($url='', $loc='') {

Please help if any one can know that.

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1 Answer 1

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sed command is used to replace word / string syntax

The syntax is as follows:

sed -i 's/function __construct($url='', $loc='') {/function __construct($url='', $loc='') {/g' file_name
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