📄 grep.m
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function grep(filename, pattern)
fid = fopen(filename, 'r');
line_number = 0;
while feof(fid) == 0,
line = fgetl(fid);
matched = findstr(line, pattern);
if ~isempty (matched)
fprintf('%d: %s \n', line_number,line);
end
line_number = line_number + 1;
end
fclose(fid);
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