bash jupyter kernel in sage worksheet

Features shown:

remember variables and working directory between cells
ansi colors displayed in output
display images by sending file to stdin for display command
autocompletion

%auto
jbash = jupyter("bash")
%default_mode jbash

[removed]

set | grep SHELL

SHELL=/bin/bash
SHELLOPTS=braceexpand:emacs:hashall:histexpand:history:interactive-comments:monitor

pwd
echo
ls

/projects/ccd4d4a4-29a8-4c39-85c2-a630cb1e9b6c/cloud-examples/sagews-jupyter

bash.sagews  jupyter-python3.sagews  r-completion.png  r.sagews  sage.png

# display an image
display < sage.png

# set variables and working directory in a cell
VAR1='hello'
VAR2='world'
cd ..

# verify variables and working directory in next cell
pwd
echo
echo $VAR1 $VAR2

/projects/ccd4d4a4-29a8-4c39-85c2-a630cb1e9b6c/cloud-examples

hello world

# autocompletion
# put cursor at the end of VAR and type TAB
echo $VAR