Commenting out lines with a specific substring across multiple files in Sublime/Linux

Question

I have a bunch of files that contain lines that I want to comment out containing a specific string.

In the following example, I'd need to comment out only the lines with substring Sensor . I'm using Sublime editor so doing through that would be amazing but if there's a possibility with some linux commands, that would work too.

//fileA.c
printf ("Sensor reading A");  // need to comment out this
// ...

// fileB.C
printf ("Function starts...");
printf ("Sensor A value");   // need to comment out this
// ...

Answer 1

In shell:

for file in *.c; do # Adjust as needed
    printf '%s\n' 'g/Sensor/s!^!//!' w | ed -s "$file"
done

For each file, open it with the standard POSIX file editor ed , and add // to the beginning of any line containing Sensor , then save the file.