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Editorial Team
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Asked: 2026-06-18T16:36:08+00:00

I have some 50+ m files that worked in a previous driver version but

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I have some 50+ m files that worked in a previous driver version but are outdated for the newer driver version. As a result, I need to find and replace various variable or field names, and sometimes edit variable inputs for all these files.
For example, I’d like to find the line 

src.aaaa = 100;

and replace it to:

src.bbbb = 100;

another example is to replace:

vid = videoinput('xxxx' ,1, 'yyy')

with:

vid = videoinput('kkkkkk' ,1, 'zzzz')

I’ve searched and found this discussion, that allows to search in multiple files, but not really edit or replace anything. I can handle matlab so I’m looking for a way to do that in matlab. Any ideas?

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1 Answer

  1. Editorial Team

    You could use the ‘Find Files’ dialog that you posted (Ctrl-Shift-F) to find each file you are looking for and then ‘Find and Replace’ (Ctrl+F) the specific lines you want to change.

    As an example, find the file with src.aaaa = 100; using Ctrl+Shift+F. Then Ctrl+F and add the src.aaaa = 100; to the upper textbox and src.bbbb = 100; to the lower textbox.

    From your post, it is unclear as to whether or not this would be feasible since I do not know how many different lines you would like to change in these m-files. How many are there? Are the m-files similar or are they all different?

    If there are specific variables you are searching for, you could write a script to loop search through all the m-files using the dir function. Read the m-file into a string variable using fscanf. Then replace the variable in the string using strrep. And finally using fprintf to write to a new .m file with the corrected variables.

    Refer to:

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