When I print (cat) my log file, the following shows up

[00:15:09 17/11/2006] Executing sftp ...
sftp> lcd /home/abc
/home/abc
sftp> put test.xml
test.xml | 20MB | 620kB/s | TOC: 00:00:33 | 100%
sftp> quit
[00:15:46 17/11/2006] test.xml transferred

then I try to grep "100%" from this file where I got "grep: 0652-226 Maximum line length of 2048 exceeded."
So I did a "cat -v" on my log file which give me

[00:15:09 17/11/2006] Executing sftp ...
sftp> lcd /home/abc^M
/home/abc^M
sftp> put test.xml^M
^Mtest.xml | 576kB | 576kB/s | ETA: 00:00:34 | 2%^Mtest.xml | 960kB | 480kB/s | ETA: 00:00:40 | 4%^Mtest.xml | 1.4MB | 480kB/s | ETA: 00:00:39 | 7%^Mtest.xml | 1.9MB | 480kB/s | ETA: 00:00:38 | 9%^Mtest.xml | 2.4MB | 486kB/s | ETA: 00:00:37 | 11%^Mtest.xml | 2.8MB | 485kB/s | ETA: 00:00:36 | 14%^Mtest.xml | 3.3MB | 485kB/s | ETA: 00:00:35 | 16%^Mtest.xml | 3.8MB | 480kB/s | ETA: 00:00:34 | 18%^Mtest.xml | 4.2MB | 480kB/s | ETA: 00:00:33 | 21%^Mtest.xml | 4.7MB | 480kB/s | ETA: 00:00:32 | 23%^Mtest.xml | 5.1MB | 477kB/s | ETA: 00:00:31 | 25%^Mtest.xml | 5.6MB | 480kB/s | ETA: 00:00:30 | 28%^Mtest.xml | 6.1MB | 480kB/s | ETA: 00:00:29 | 30%^Mtest.xml | 6.5MB | 475kB/s | ETA: 00:00:29 | 32%^Mtest.xml | 6.9MB | 469kB/s | ETA: 00:00:28 | 34%^Mtest.xml | 7.3MB | 470kB/s | ETA: 00:00:27 | 36%^Mtest.xml | 7.8MB | 471kB/s | ETA: 00:00:26 | 39%^Mtest.xml | 8.3MB | 471kB/s | ETA: 00:00:25 | 41%^Mtest.xml | 8.9MB | 478kB/s | ETA: 00:00:23 | 44%^Mtest.xml | 9.4MB | 482kB/s | ETA: 00:00:22 | 47%^Mtest.xml | 10MB | 486kB/s | ETA: 00:00:21 | 49%^Mtest.xml | 11MB | 492kB/s | ETA: 00:00:19 | 52%^Mtest.xml | 11MB | 498kB/s | ETA: 00:00:18 | 56%^Mtest.xml | 12MB | 509kB/s | ETA: 00:00:16 | 59%^Mtest.xml | 13MB | 521kB/s | ETA: 00:00:14 | 63%^Mtest.xml | 14MB | 537kB/s | ETA: 00:00:12 | 68%^Mtest.xml | 14MB | 548kB/s | ETA: 00:00:10 | 72%^Mtest.xml | 15MB | 561kB/s | ETA: 00:00:08 | 76%^Mtest.xml | 16MB | 570kB/s | ETA: 00:00:06 | 80%^Mtest.xml | 17MB | 578kB/s | ETA: 00:00:05 | 84%^Mtest.xml | 18MB | 588kB/s | ETA: 00:00:03 | 89%^Mtest.xml | 19MB | 597kB/s | ETA: 00:00:02 | 93%^Mtest.xml | 19MB | 603kB/s | ETA: 00:00:00 | 97%^Mtest.xml | 20MB | 620kB/s | TOC: 00:00:33 | 100%^M
sftp> quit^M
[00:15:46 17/11/2006] test.xml transferred

what I want to do is to verify whether the file is transferred successfully, hence "grep 100%", but it seems that there are many hidden messages which cause error, can anyone tell me whether I can remove these hidden messages? or is there any other way to verify?