[conspire] [ONLIST] DNS_CK - appreciate a look-see; Python? - no, it's shell

[Elise Scher]

Thanks.

On Thu, May 7, 2020, 5:57 AM Michael Paoli <Michael.Paoli at cal.berkeley.edu>
wrote:

> > From: "Elise Scher" <elise.scher01 at gmail.com>
> > Subject: Re: [conspire] [ONLIST] DNS_CK - appreciate a look-see
> > Date: Thu, 7 May 2020 04:18:09 -0700
>
> > Python?
> >
> > On Thu, May 7, 2020, 2:28 AM Michael Paoli <
> Michael.Paoli at cal.berkeley.edu>
> > wrote:
> >
> >> http://www.mpaoli.net/~michael/bin/DNS_CK
>
> Shell:
> $ head -n 1 DNS_CK
> #!/bin/sh
> $
> https://en.wikipedia.org/wiki/Shebang_(Unix)
> $ man sh | col -b | expand | sed -e '/^[ \t]*$/d' | head -n 3
> DASH(1)                   BSD General Commands Manual
> DASH(1)
> NAME
>       dash -- command interpreter (shell)
> $
> In the land of Unix/Linux/BSD(/...?)
> /bin/sh
> generally gives a Bourne or POSIX(-like) shell, or shell in
> POSIX(-like) mode.
> dash is essentially a minimal POSIX compliant shell.
> $ type dash bash
> dash is hashed (/bin/dash)
> bash is /bin/bash
> $ ls -l /bin/[bd]ash
> -rwxr-xr-x 1 root root 1099016 May 15  2017 /bin/bash
> -rwxr-xr-x 1 root root  117208 Jan 23  2017 /bin/dash
> $ man sh | col -b | expand | sed -ne '/^HISTORY/,/^$/{/^$/q;p}'
> HISTORY
>       dash is a POSIX-compliant implementation of /bin/sh that aims to be
> as
>       small as possible.  dash is a direct descendant of the NetBSD
> version of
>       ash (the Almquist SHell), ported to Linux in early 1997.  It was
> renamed
>       to dash in 2002.
> $ ls -l /bin/sh
> lrwxrwxrwx 1 root root 4 Jan 23  2017 /bin/sh -> dash
> $
>
>
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