close #183: support dash, ksh #424

Job	Run time
fresh-macos-test	11m 51s
login-shells-and-linting	2m 24s
homebrew-macos-test	11m 6s
distro-test (ubuntu:latest)	3m 49s
distro-test (fedora:latest)	4m 28s
distro-test (debian:latest)	3m 58s
distro-test (alpine:latest)	7m 38s
distro-test (manjarolinux/base)	3m 42s
distro-test (opensuse/leap)	6m 44s
distro-test (opensuse/tumbleweed)	4m 15s
distro-test (kalilinux/kali-rolling)	3m 57s
	1h 3m 52s

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