close #183: support dash, ksh #423

Job	Run time
homebrew-macos-test	10m 33s
fresh-macos-test	11m 5s
distro-test (ubuntu:latest)	3m 45s
login-shells-and-linting	2m 19s
distro-test (fedora:latest)	4m 33s
distro-test (debian:latest)	3m 39s
distro-test (alpine:latest)	8m 5s
distro-test (manjarolinux/base)	3m 40s
distro-test (opensuse/leap)	8m 25s
distro-test (opensuse/tumbleweed)	4m 13s
distro-test (kalilinux/kali-rolling)	3m 57s
	1h 4m 14s

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