[ale] I need a bash clue.

[Joe Knapka]

Fletch <fletch at phydeaux.org> writes:

> >>>>> "Joe" == Joe Knapka <jknapka at kneuro.net> writes:
> 
> [...]
> 
>     Joe>  find . -type d -exec ( pushd {} ; etags *.c ; popd ) ;
> 
> Not that the for solution also wouldn't work, 

It actually did work. I'm happily etagging away.

> but you can also run the
> commands inside in a subshell where changes to things such as cwd
> don't affect the parent shell.
> 
> 
> find . -type d -exec bash -c '( cd '{}'; etags *.c )' \;

That was what I was looking for. The interaction between find's
command-line parsing and the shell's parsing and expansion is somewhat
confusing.

> 
> Or just use zsh and dispense with the find altogether (this also
> checks that there are .c files in the directory before trying to run
> etags).
> 
> 
> for i in **/*(/); do (cd $i; [[ -n "$(print *.c(N))" ]] &&etags *.c) ; done

Looks interesting, though no less opaque than the bash version.
I'll read up on zsh.

Thanks,

-- Joe

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