```
I0709 13:45:33.848619  3415 upgrade_proto.cpp:1044] Attempting to upgrade input file specified using deprecated 'solver_type' field (enum)': models/model
I0709 20:02:09.081399  3415 solver.cpp:228] Iteration 101, loss = 2.25779
I0709 20:02:09.081477  3415 solver.cpp:244]     Train net output #0: loss = 2.25779 (* 1 = 2.25779 loss)
I0709 20:02:09.081495  3415 sgd_solver.cpp:106] Iteration 101, lr = 0.01
I0709 20:02:20.067615  3415 solver.cpp:228] Iteration 102, loss = 2.22583
I0709 20:02:20.067740  3415 solver.cpp:244]     Train net output #0: loss = 2.22583 (* 1 = 2.22583 loss)

```

From a file like the above, I need the numbers 2.25779 and 2.22583 in this case, and dump each one on a line on a new file.

I've tried something like: 

```
cat file.txt | grep -P 'loss = .*[0-9]\n' > res.csv

```

That doesn't match anything tho and I don't know how to get more specific (only the number not the loss =).

So a:

```
 cat res.csv

```

Should show the output:

```
2.25779

2.22583

```