Copy a txt file and change a line by a other
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Lila wagou
am 23 Mär. 2016
Kommentiert: Walter Roberson
am 24 Mär. 2016
Dear I have a problem to copy from a txt file to another one, and change a specific line i have found the copy file option
file_A = 'Ok_A.txt';
file_B = 'Ok_B.txt';
copyfile(file_A,file_B)
But i cannot go further
0 Kommentare
Akzeptierte Antwort
Walter Roberson
am 23 Mär. 2016
copyfile() is not appropriate for this. You need to fopen() one file for input and the other for output, and then copy the input to the output until you get to the line that is to be changed. Output the changed version of the line rather than the original version of the line. Then continue copying input to output until the end of file. Then fclose() the two files.
There is no way to make a change in the "middle" of a text file -- not unless the new text is exactly the same size as the original text. This is not a restriction imposed by MATLAB: it is a restriction on all file systems that have been implemented by vendors over the last 30-ish years.
4 Kommentare
Walter Roberson
am 24 Mär. 2016
fid_in = fopen('Ok_A.txt', 'r');
fid_out = fopen('Ok_B.txt', 'w');
You can change the strings to whatever you need.
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Migrate GUIDE Apps finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!