[Tcsh] Compliments to the developers and contributors.

[Christos Zoulas]

There are lots of problems and races in the way csh (and tcsh) evaluates commands and pipelines. Some of them are really hard to fix (see https://bugs.astron.com <https://bugs.astron.com/>). Also parsing is not robust since the shell only recognizes keywords at the beginning of lines in some cases...

Best,

christos

> On Aug 31, 2022, at 6:01 PM, M G P <tateusg at hotmail.com> wrote:
> 
> I wrote a guide on how to use the C Shell, in the hope it'll serve as a guide on how to adequately write scripts, as well as to encourage people on not giving up: https://gist.github.com/Krush206/bfcfd760be645150bb247f051e98c9d3 <https://gist.github.com/Krush206/bfcfd760be645150bb247f051e98c9d3>
> 
> 
> 
> 
> From: Tcsh <tcsh-bounces at astron.com> on behalf of M G P <tateusg at hotmail.com>
> Sent: Tuesday, August 16, 2022 1:20:16 PM
> To: tcsh at astron.com <tcsh at astron.com>
> Subject: Re: [Tcsh] Compliments to the developers and contributors.
> 
> 
> 
> 
> https://en.m.wikipedia.org/wiki/Special:MobileDiff/1102822365 <https://en.m.wikipedia.org/wiki/Special:MobileDiff/1102822365>
> Why do they think multi-line aliases aren't possible?
> 
> alias function 'if -e \!$ then\
> 
> echo OK\
> 
> else\
> 
> echo Not OK\
> 
> endif'
> 
> function dir
> 
> 
> 
> I can also make it into a variable:
> 
> set function = 'if -e \!$ then\
> 
> echo OK\
> 
> else\
> 
> echo Not OK\
> 
> endif\
> 
> :'
> 
> eval $function:q dir
> 
> 
> 
> 
> 
> 
> From: Tcsh <tcsh-bounces at astron.com> on behalf of M G P <tateusg at hotmail.com>
> Sent: Monday, January 31, 2022, 05:52
> To: tcsh at astron.com <tcsh at astron.com>
> Subject: Re: [Tcsh] Compliments to the developers and contributors.
> 
> 
> And I'm very proud to find another, better workaround to the criticism in the Wikipedia webpage:
> 
> # Always creates an empty file
> 
> if (! -e myfile) echo mytext > myfile
> 
> # Workaround
> 
> if (! -e myfile) eval "echo mytext > myfile"
> 
> My workaround <https://en.wikipedia.org/wiki/Special:MobileDiff/1069012614>:
> 
> ( ( : < myfile ) >& /dev/null && echo File exists. ) || ( ( echo mytext > myfile ) >& /dev/null && echo File created. ) || ( echo Cannot create file. )
> 
> 
> 
> 
> 
> 
> 
> 
> From: Tcsh <tcsh-bounces at astron.com> on behalf of M G P <tateusg at hotmail.com>
> Sent: Wednesday, December 22, 2021, 03:05
> To: tcsh at astron.com
> Subject: [Tcsh] Compliments to the developers and contributors.
> 
> 
> Hello.
> 
> Just did like to leave a comment in here, thanking the developers and contributors of Tcsh.
> 
> 
> 
> The C Shell is such a brilliant work from Bill Joy, and Tcsh makes a great enhancement and continuation to it. Furthermore, the C Shell is the only Shell out there which resembles the Thompson and Mashey Shells, which (unfortunately) were superseded by the Bourne Shell.
> 
> 
> 
> I'm not a long-time Tcsh user, however, after learning it, it really fascinated me - so much that I keep wondering how some dislike it.
> 
> To be fair, Tcsh taught me how to write scripts with security in mind, due its "limitations". The "limitations" imposed by the C Shell make it one of the most reliable Shells to work with, and I should not complain, but thank for that. (E.g: nesting commands is impossible; there are better ways to achieve what one want, without nesting commands.)
> 
> 
> 
> I really have no complaints to C Shell or Tcsh, but I must thank each of you who keep the development of an old brilliant gem from Bill Joy and Ken Greer up.
> 
> Thank you very much for your time and effort!
> 
> 
> 
> P.S: the complaints from a Perl developer in faqs.org are plain petty; something I learned very quickly is that most things can be worked-around with sub-shells or named FIFOs.
> 
> 
> 
> 
> 
> 
> 
> --
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> Tcsh at astron.com
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