Alias for a dynamic variable?

Alias for a dynamic variable?

[zzapper]

Hi
How can I have a (Global) alias for a dynamic variable such as $OLDPWD 

hope this isn't a DOH!

-- 
http://successtheory.com/tips/ Vim, Zsh, MySQL Tips

Re: Alias for a dynamic variable?

[Peter Stephenson]

zzapper wrote:
> Hi
> How can I have a (Global) alias for a dynamic variable such as $OLDPWD 

Not sure I understand the question, but you can have a global alias by
having a global alias... here's one with $SECONDS...

% alias -g s='$SECONDS'
% echo s
184291.9458320000
% echo s
184293.7045900000
% echo s
184294.6965270000

(I have "typeset -F SECONDS" in my .zshrc.)

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070


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Re: Alias for a dynamic variable?

[zzapper]

Peter Stephenson <pws@csr.com> wrote in news:EXCHANGE03cWo7Z0xK40000be27
@exchange03.csr.com:

> alias -g s='$OLDPWD'
this works such that I can
>cd s
but I cant do
>cp s/somefile .
 
So decided what I really want is just a shorter name for $OLDPWD

so I can do say

> cp $OP/somefile .

In fact tab completion helps so I don't have to type all of $OLDPWD

-- 
http://successtheory.com/tips/ Vim, Zsh, MySQL Tips

Re: Alias for a dynamic variable?

[Peter Stephenson]

zzapper wrote:
> Peter Stephenson <pws@csr.com> wrote in news:EXCHANGE03cWo7Z0xK40000be27
> @exchange03.csr.com:
> 
> > alias -g s='$OLDPWD'
> this works such that I can
> >cd s
> but I cant do
> >cp s/somefile .

You can already use ~- to refer to the relevant directory.

If you want a parameter, you can assign it every time the directory
changes:

chpwd() { O=$OLDPWD }

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070



To access the latest news from CSR copy this link into a web browser:  http://www.csr.com/email_sig.php

Re: Alias for a dynamic variable?

[zzapper]

Peter Stephenson <pws@csr.com> wrote in news:EXCHANGE03iF5DIz5pF0000bf83
@exchange03.csr.com:

> zzapper wrote:
>> Peter Stephenson <pws@csr.com> wrote in 
news:EXCHANGE03cWo7Z0xK40000be27
>> @exchange03.csr.com:
>> 
>> > alias -g s='$OLDPWD'
>> this works such that I can
>> >cd s
>> but I cant do
>> >cp s/somefile .
> 
> You can already use ~- to refer to the relevant directory.
> 

cp ~-/suk.jpg .

Thanx JWTDO

Dead obvious when you know how!

zzapper