1 + hg init
2 + echo This is file a1
3 + hg add a
4 + hg commit -t 'commit #0' -d '0 0' -u user
5 + ls
6 a
7 + echo This is file b1
8 + hg add b
9 + hg commit -t 'commit #1' -d '0 0' -u user
10 + hg co 0
11 + ls
12 a