You can use an uncaptured subprocess to run a command explicitly in bash mode. I'm unsure how you think xonsh would break a bash script, though. When you run a

You can use an uncaptured subprocess to run a command explicitly in bash mode. I'm unsure how you think xonsh would break a bash script, though. When you run a script in xonsh it's still going to be interpreted by whatever is declared in the script's shebang. Just like you can run a perl script from bash, you can run a bash script from xonsh. E.G. $ ls='foo' $ cat test.sh #!/bin/bash ls ~ $ print(ls) foo $ ./test.sh bin C:\nppdf32Log\debuglog.txt foo initrd.img.old lost+found opt run sys var boot dev home lib media proc sbin tmp vmlinuz cdrom etc initrd.img lib64 mnt root srv usr vmlinuz.old