strpos
Syntax
strpos(X, str)
Arguments
X is a string scalar/vector.
str is a string scalar.
Details
If X contains str, return the index in X where the first occurrence of str starts; otherwise, return -1.
Examples
$ strpos("abcdefg","cd");
2
$ strpos("abcdefg","d");
3
$ strpos("abcdefg","ah");
-1