IPython is a good UNIX shell replacement, for those who want an interactive shell with a better programming language.
You can use unadorned shell commands, file globbing, and pipes, as well as regular python.
Regular shell: ls *.py | grep -v foo
Regular python: for x in range(3): print(x)
There is special syntax for running shell commands to be easily used by python code...
Shell in python: my_python_var1 = !ls #only for assigning variables
Python in shell: ls $my_python_var2
For anybody pining for python2: print "foo" #works!
Also works for any outermost python function: dir enumerate(list())
But unfortunately doesn't currently work with other code: for x in range(3):
print x
For some reason, the maintainers are no longer publishing a profile for this stuff, so you can use the following to get up and running:
pip install ipython
cat >> ~/.ipython/profile_default/ipython_config.py <<EOF
from IPython.terminal.prompts import Prompts, Token
import os
class MyPrompt(Prompts):
def cwd(self):
cwd = os.getcwd()
if cwd.startswith(os.environ['HOME']):
cwd = cwd.replace(os.environ['HOME'], '~')
cwd_list = cwd.split('/')
for i,v in enumerate(cwd_list):
if i not in (1,len(cwd_list)-1): #not last and first after ~
cwd_list[i] = cwd_list[i][0] #abbreviate
cwd = '/'.join(cwd_list)
return cwd
def in_prompt_tokens(self, cli=None):
return [
(Token.Prompt, 'In ['),
(Token.PromptNum, str(self.shell.execution_count)),
(Token.Prompt, '] '),
(Token, self.cwd()),
(Token.Prompt, ': ')]
c.TerminalInteractiveShell.prompts_class = MyPrompt
c.TerminalInteractiveShell.editing_mode = 'vi'
c.InteractiveShell.autocall = 2 #insert parens around functions as much as possible
c.InteractiveShellApp.exec_lines = ['%rehashx']
