On Fri, Jul 12, 2019, 3:46 PM L A Walsh <b...@tlinx.org> wrote:
> On 2019/07/12 11:51, Eli Schwartz wrote:
>
>
> find_cmds() {
> for c in "$@"; do
> type -P $c >&/dev/null || {
> Pe "$0#$LINENO: Cannot find %s", "$c"
> exit 1; }
> alias $c=$(type -P $c);
> done
> }
>
>
>
This is a perfect example. I have to guess what Pe is. I presume it means
Print_error. If so, that's what it should be named - for readability. And
instead of assuming that it's a function, I have to hope it's not an alias.
By the way, why isn't type -p aliases to Pathof or something?
<snip>
>
> You claim that my saying the bash-builtins are a type of alias for an
> external command that it is intended to have some similar functionality
> to, is
> "nonsense". To that assertion, I used the fact that many or most bash
> builtins that replace external counterparts are also following some
> POSIX stated behavior to support my original assertion that they are
> intended to be drop-in
> replacements for those commands. I.e. using the design requirements for
> those bash built-ins that replace external posix components, its easy to
> see
> that your nonsensical response of 'Nonsense' was incorrect. Talking about
> different methods of saying the same thing, like aliasing is about as on
> topic as anything.
>
>
Baby Face Nelson is an alias for Lester Joseph Gillis. John Dillinger was a
contemporaneous bank robber but he was not an alias for Mr. Gillis (but
they did partner at one point). Perhaps Pretty Boy Floyd would make a
better example though since his nickname bears a similarity to Gillis'.
But I digress.
<snip>
Ultimately one of the facts at issue is that Bash is both a scripting
language and a command line interface. As the latter, it includes a number
of command line conveniences that should not be used in scripts. Among
those, in my opinion, are aliases and tilde expansions. I would also
include the overuse of pipes. Of course they are fundamental to the Unix
way and hacking something together on a command line for a one off or while
feeling one's way toward a solution is fine. I'd better not see a script
containing grep piped into awk
As far as saving keystrokes while typing goes, any good editor can be a
great deal of help in this pursuit.
