Question

is there a command to search for a ‘particular entry inside the files present in a folder’ in matlab?
like if i want to search for the word “hello” in all the files present in folder A.

allFiles = dir( 'G:\folder\myfilename' );
allNames = { allFiles.name };

only lets me search for a particular file in a specific folder.:(

Answer 1

See this answer to get you a list of all files in a directory.

Then you can use regexpi to identify any files containing the string 'hello'.

Or as Peter D points out:

I found it useful to build in regular expressions into the function.

if ~isempty(fileList)     
   fileList = cellfun(@(x) fullfile(dirName,x),'UniformOutput',false);
   matchstart =  regexp(fileList, pattern); 
   fileList = fileList(~cellfun(@isempty,  matchstart));
end 

and change the function signature to

getAllFiles(dirName, pattern) (also in the 2nd to last line)