Add tidying and linting for shell code and clean some shell up #626

Job	Run time
FreeBSD-x86_64 with rust stable	1m 15s
Linux-x86_64 with rust stable	57s
Linux-aarch64 with rust stable	1m 10s
Linux-arm with rust stable	1m 11s
Linux-i686 with rust stable	1m 0s
Linux-powerpc with rust stable	1m 3s
Linux-powerpc64 with rust stable	59s
Linux-powerpc64le with rust stable	58s
Linux-riscv64 with rust stable	2s
Linux-s390x with rust stable	57s
NetBSD-x86_64 with rust stable	1s
Windows-aarch64 with rust stable	53s
Windows-i686 with rust stable	50s
Windows-x86_64 with rust stable	56s
macOS-x86_64 with rust stable	58s
macOS-aarch64 with rust stable	58s
Linux-x86_64 with rust beta	58s
Linux-x86_64 with rust nightly	47s
	15m 53s

Provide feedback