requested dry-run mode for bash.

This is a request for a new feature. Perhaps there are good reasons why it can't be done, but from the outside looking in it seems possible, and I have taken into account advice from the bash help mailing list. Could there be a dry-run option for bash. A dry-run option would be something akin to

Re: Could bash do what make does?

make has survived all this time but it is not very well accepted today with a lot of competing build systems trying to do better. bash is very secure and moreover the Bourne shell was there first. make is falling out of favour as far as I can see even though it has had a very good run: Kernighan

Could bash do what make does?

Has thought been given, over the years, to extending bash to do what make does, in the obvious way that I am about to describe? It would be a matter of having chosen build commands do nothing if their outputs are newer than their inputs. For example that is, cc file.c -o file.o should execute

Re: Could bash do what make does?

On 6 December 2016 at 00:19, Greg Wooledge wrote: > what evidence? > ​ [for shell scripting builds] > ​ I suppose the evidence that you want is in the very same wikipedia article about make, where it says precisely that shell scripts were used before make came along.

Re: Could bash do what make does?

On Fri, Dec 02, 2016 Greg Wooledge wrote: "For starters, make is *older* than bash, by over a decade. "https://en.wikipedia.org/wiki/Make_%28software%29 says that make originated at Bell Labs in April 1976. "https://en.wikipedia.org/wiki/Bash_%28Unix_shell%29 says that the first "beta version of

Re: Could bash do what make does?

On 29/11/16 Charles Daffern replied to my question about bash and make as if I was proposing that bash might beneficially reimplement make, but really I am asking why should not program builds have been scripted with bash all along and make never invented. So if Charles or someone else could point

Re: Could bash do what make does?

than some file that is required. On 29 November 2016 at 02:21, Dennis Williamson <dennistwilliam...@gmail.com > wrote: > > > On Sun, Nov 27, 2016 at 7:25 PM, Robert Durkacz <robert.durk...@gmail.com> > wrote: > >> Has thought been given, over the years, to exten

Re: Could bash do what make does?

You have gone to some trouble with your answer Eduardo, and thanks for that but really you are arguing against a proposition that I have not put and I do not want other readers to be mislead. I am asking about shell scripting of software builds, something that is perfectly possible to do and once

Re: Redirect to variable

On 5/21/18 Chet Ramey wrote: > What you're asking for is syntactic sugar for: > some-command > temp-file > echo '#' >> temp-file > variablename=$(< temp-file) > rm -f temp-file > variablename=${variablename%?} > I would look at a sample implementation, possibly using mmap, if someone did one.