526 git push origin first-one 527 git co master 528 git pull origin/master 529 git pull origin master 530 git checkout -b add-command-log 531 ls 532 subl . 533 git checkout --help 534 git pull --help 535 history 536 history 15 537 git history 15 538 hisotry 15 539 history 15 540 history 15 >> README.md