Re: [PLUG] take-your-bash-scripting-seriously

[Steve Litt via plug <plug@lists.phillylinux.org>]

Walt Mankowski via plug said on Sat, 06 May 2023 09:35:48 -0400

>On Sat, May 6, 2023, at 1:05 AM, Steve Litt via plug wrote:
>> Walt Mankowski via plug said on Fri, 5 May 2023 22:28:36 -0400
>>   
>> >On Fri, May 05, 2023 at 08:55:46PM -0400, Steve Litt via plug
>> >wrote:  
>> >> On scripts vs programs. I've always maintained that if you tell a
>> >> computer what to do in the future, you're programming. Whether
>> >> it's 100K lines of C or 2 lines of /bin/sh, if it's
>> >> non-interactive and more than one command, it's programming. If
>> >> you write a Word macro, it's programming.    
>> >
>> >Wait, does this mean all my Perl one-liners aren't programs?  
>> 
>> If I had to take a stand on this I'd say they're programs. If a
>> distinction needs to be made, I spoze they could be called
>> one-liners.  
>
>Yesterday I had was working with a file that had paths to about 700
>files. The files had moved, so I needed to change the paths from
>`/a/b/c/d` to `a/x/y/d`. This is really easy to do in a Perl one-liner:
>
>
>
>The only reason that’s one line is that the -p flag is wrapping a loop
>around it that reads from stdin and runs a regex on every line. If I
>had to write it all out, it would look something like this:
>
>while (<>) {
>    s(b/c)(x/y);
>    print;
>}
>
>It seems like a real program to me!

`perl -pe ‘s(b/c)(x/y)’`

Xactly!

SteveT

Steve Litt 
Autumn 2022 featured book: Thriving in Tough Times
http://www.troubleshooters.com/bookstore/thrive.htm
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