Re: Using -prune option of find to ignore hidden directories
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On Wed, May 03, 2017 at 04:38:15PM -0400, Greg Wooledge wrote:
> On Wed, May 03, 2017 at 10:22:57PM +0200, tomas@tuxteam.de wrote:
> > FWIW, a trick to see what's really going on is to prepend an echo
> > before all that:
> >
> > echo find /home/richard -type d -name .*
> >
> > (for the example above). Of course you won't think of that if you
> > are't suspecting shell expansion in the first place, but I find
> > it very instructive to see what the shell is "seeing". That'll
> > help memory for the next time (it does for me, at least).
>
> Yeah, that's a good start. I actually have a little script I wrote,
> called "args":
>
> wooledg:~$ cat bin/args
> #!/bin/sh
> printf "%d args:" "$#"
> printf " <%s>" "$@"
> echo
[...]
Nifty!
At the same time it shows the power of the shell's text substitution
model, which at the same time is its weakness. Shell is a very
interesting language model, somewhat dual to the languages in
fashion these days. Tread carefully :-)
cheers
- -- t
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