modern conventions for all commands/ #598

Job	Run time
homebrew-macos-test	2m 38s
fresh-macos-test	2m 38s
distro-test (ubuntu:latest)	2m 28s
login-shells-and-linting	2m 39s
distro-test (fedora:latest)	2m 27s
distro-test (debian:latest)	2m 28s
distro-test (alpine:latest)	2m 29s
distro-test (manjarolinux/base)	2m 28s
distro-test (opensuse/leap)	2m 26s
distro-test (opensuse/tumbleweed)	2m 26s
distro-test (kalilinux/kali-rolling)	2m 29s
	27m 36s

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