| From: | Aaron Optimizer Digulla |
| Date: | 7 Aug 2000 at 07:31:58 |
| Subject: | Re: AMIOPEN: ixemulng library, tools and global variables |
On Sun, Aug 06, 2000 at 10:12:38AM +0100, Matthew J Fletcher wrote:
> > - Why doesn't this work:
> >
> > echo vpcc {-Dprefix=}$sys.cwd -T -o ${sys.cwd}/file file.c
> >
> > When I try this, I get "shell: echo: try 'help echo' for documentation".
> > Not very useful :-(
>
> I would suspect (but i have not tested it ! ), that the elate shell`s stupid
> use of {} as ""'' is causing the problem.
>
> This is quite stupid because "" and '' have a different priority, cos in
> unix scripts you can do stuff like echo "grep -r -i `[ami*,sdk*]' | 'sed
> g/.SDK*/.ami*/' | count -w"
>
> Which you could not get to work under elate (at least without a bash port).
Oh, that's simple. Just use: echo {grep -r -i {[ami*,sdk*]} |
{sed {g/.SDK*/.ami*/} | count -w}}.
And if you want to execute this (so that echo prints the words):
echo ${!cmd {grep -r -i {[ami*,sdk*]} | sed {g/.SDK*/.ami*/} | wc -w}}
should do. Note that you must put the commands to run in !cmd inside
{} because !cmd allows to run any number of commands. ${!cmd grep -r ...
would try to run grep, then -r, then ....
Took me about 2h to figure out :-(