frewind

Open the following file, perform a read operation, and then move the file position indicator back to the beginning of the file.

Use fopen to open the file, and then use fgetl to read the first two lines.

fid = fopen('badpoem.txt');
tline1 = fgetl(fid)  % read first line 

tline1 = 
'Oranges and lemons,'

tline2 = fgetl(fid)  % read second line

tline2 = 
'Pineapples and tea.'

The previous two read operations moved the position indicator to the beginning of line 3 in the poem. As a result, the next read operation using fgetl returns line 3.

tline3 = fgetl(fid)

tline3 = 
'Orangutans and monkeys,'

To reread the first line of the file, reset the position indicator using the frewind function, and then perform the read operation.

frewind(fid)
fgetl(fid)

ans = 
'Oranges and lemons,'

Close the file.

fclose(fid);