Finding the first occurance of a given string

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UWM
UWM 2016-11-10
评论： UWM 2016-11-11
I have a large text file in which I need to find the first occurance of a given string, e.g. 'STAX'. How can I do this?

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KSSV
KSSV 2016-11-11
编辑：KSSV 2016-11-11
fid = fopen('filename','r') ;
S = textscan(fid,'%s','Delimiter','\n');
S = S{1} ;
%%Get the line number of your string 'STAX'
idxS = strfind(S,'STAX'); % find the index of your string
idx = find(not(cellfun('isempty',idxS))); % your required indices
S(idx)

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