Re: [gentoo-user] bash scripting tip

[BRM]

----- Original Message ----

> From: Hilco Wijbenga <hilco.wijbenga@×××××.com>
> On 12 November 2010 10:36, Hilco Wijbenga <hilco.wijbenga@×××××.com>  wrote:
> > On 12 November 2010 09:57, Philip Webb <purslow@××××××××.net>  wrote:
> >> It needs to be a Bash function, so in  ~/.bashrc
> >>  I tried 'function cd2() { cd .. ; cd $1 ; }',
> >
> >  Doesn't
> >
> > function cd2() { cd ../$1 }
> >
> > work? (I  haven't tried it.)
>
> So yes, this:
>
> function cd2() { cd ../$1;  }
>
> works.
 
Something I have found useful is the pushd/popd functions in Bash.
Of course, to use them the way you want to you'd have to use two step procedure:

1. Init to the directory you want:

function cdInit()
    {
    pushd ${1} > /dev/null
    pushd ${2} > /dev/null
    }

2. cd away:

function cd2()
    {
    popd > /dev/null
    pushd ${1} > /dev/null
    }

3. close out when you're done:

function cdFini()
    {
    popd
    }

You could probably modify the above do pull out the initial directory from a 
single string by - e.g. turn /my/path/parent/child into /my/path/parent - as 
well.
You could also process the DIRSTACK variable (or use the 'dirs' command) to see 
if the parent directory is already on the stack too.

Note: I have the redirs in there because pushd/popd by default dumps the 
DIRSTACK as its output.

$0.02

Ben