Is no builtin text search routine for files; using the system grep utility or like is a very good way to do this if is just to search for a given string in file..
In Matlab, simplest is to read the full file into memory as cellstr() array and then do the string search.
txt=textread('yourfile.txt','%s','delimiter','\n');
matchstr='Home';
ix=contains(txt,matchstr);
disp(txt{ix})
