How to grep and use sed to replace words containing string to something else ?


I would like to use grep and and sed to replace string to something else .

Eg :

When i use grep, there are 97 result :

root@svr51 [/home/xxx/public_html/akaunting]# grep -lir "ini_set" ./* | wc -l

I would like to replace "ini_set" found in those file to "//ini_set" , to comment/disabled that line.

Anybody can help to construct full grep and sed command ?

Please let me know also the location where i should run that command to avoid it to replace file in wrong location.

Thank you.
Shamsul KamalJunior TechAsked:
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This does  the trick:

cd /path/to/your/folder

sed -i 's/ini_set/\/\/ini_set/g' ./*


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