linux find :How to find all the files containing a particular text string?-R&D26012012

At Linux command line, to find a particular text string in all the files from the current directory recursively (that is, including all those files from the child or grandchild directories), use something like this via SSH:

find . -exec grep -l "needle" {} \;

This command searches through all directories from the current directory recursively for the files that contain the string “needle”.

To search only .php files:

find *.php -exec grep -l "needle" {} \;

To search a specific directory:

find dirname -exec grep -l "needle" {} \;

To find all .php files that contain “needle” in all the directories under “somedir”:

find somedir -name *.php -exec grep -l "needle" {} \;