How to get line number in a text file with a specific word

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Jaffrey Hudson Immanuel Jeyakumar
评论： Jaffrey Hudson Immanuel Jeyakumar 2019-7-17
Hallo,
I have a fruit.txt file with data as follows,
apple
mango
Cherry
Watermelon
I want to write a script whcih will find the word 'apple' and return me it line number.
Can anyone help me ?

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采纳的回答

madhan ravi
madhan ravi 2019-6-22
编辑：madhan ravi 2019-6-22
No loops needed:
A = regexp(fileread('fruit.txt'),'\n','split');
whichline = find(contains(A,'apple'))
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Jaffrey Hudson Immanuel Jeyakumar
Jaffrey Hudson Immanuel Jeyakumar 2019-6-22
Hallo Madhan,
Thanks for the answer. The script works very fine :)
Regards,
Jaffrey Hudson
Jaffrey Hudson Immanuel Jeyakumar
Jaffrey Hudson Immanuel Jeyakumar 2019-7-17
Hallo ,
I need a small help. I have to trim from the second occurance of the search text 'SOF1_ANTIALIASING on surface AXLERIMI' . How can i update the script ?

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更多回答（1 个）

infinity
infinity 2019-6-22
Hello,
you could try this
fileID = fopen('fruit.txt','r');
A = textscan(fileID,'%s');
fclose(fileID);
n = size(A{:});
for i = 1:n
if strcmp(A{:}(i),'apple')
linenumber = i;
end
end
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Jaffrey Hudson Immanuel Jeyakumar
Jaffrey Hudson Immanuel Jeyakumar 2019-6-22
编辑：madhan ravi 2019-6-22
Hallo Trung,
I get the following error.
Error using textscan
Invalid file identifier. Use fopen to generate a valid file identifier.
Error in linenumber4 (line 4)
A = textscan(fileID,'%s','delimiter',sprintf('\f'));
Thank a lot for your support. The script from Madhan works now.
Regards,
Jaffrey Hudson

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