--- a/git.rst	Wed Mar 02 18:33:53 2016 +0200
+++ b/git.rst	Thu Mar 03 17:50:59 2016 +0200
@@ -217,6 +217,20 @@
 
   $ git show-ref --heads -s
 
+Search string in file
+=====================
+
+To search string in all or specific files or working copy::
+
+  $ git grep $PATT
+  $ git grep -i $PATT -- '*.[ch]'
+
+To search in all history::
+
+  $ git log -S$PATT
+  $ git log -G$PATT
+  $ git grep -i PATT $(git rev-list --all) -- '*.[ch]'
+
 Find most recent tag for revision.
 ==================================
 ::