Can't save the output of minicom into a file

Question

When I use Minicom to capture data from a serial port, I need to save the big data into a file, named minicom.cap. However, if I press Ctrl+A and L to capture file,

Answer 1

OP might miss step "Shift + L" after writing, so the overall procedure is as below:

1 (inside minicom)

2 Ctrl A + Z

3 Shift + L

4 (wait for writing ... )

5 Shift + L

6 (check the file you have written, default is minicom.cap, you may want to find it at /root/minicom.cap)