kennethreitz/envoy — Issue #19: envoy doesn't support '>>', '<<' symbols in shell command.
Author: kracekumar
Created: 2012-01-31 18:48:10+00:00
State: open

In [24]: n = envoy.run("cat requirements.txt >> py.txt")

In [25]: n.std_err
Out[25]: 'cat: >>: No such file or directory\ncat: py.txt: No such file or directory\n'