How to extend a bash built-in but still use it within the new function?

Chris Green

2 Jul 2020 2 Jul '20

1:10 p.m.

I want to extend the 'cd' command slightly so that I can execute some specific actions when entering (and leaving) a particular directory hierarchy. So I need to create a bash function called 'cd' to do this, but I still need to call the underlying bash built-in cd. Is there any way of doing this? -- Chris Green

Show replies by date

Srdjan Todorovic

2 Jul 2 Jul

1:42 p.m.

Hi Chris, On Thu, 2 Jul 2020 at 13:11, Chris Green <cl@isbd.net> wrote:

...

I want to extend the 'cd' command slightly so that I can execute some specific actions when entering (and leaving) a particular directory hierarchy.

Would there be some sort of auditing / file monitoring framework available instead?

...

So I need to create a bash function called 'cd' to do this, but I still need to call the underlying bash built-in cd. Is there any way of doing this?

Yes there is. https://unix.stackexchange.com/questions/132623/order-of-executables-started... See the answer about using the backslash. This one was new to me. Thanks, Srdjan

Chris Green

1:55 p.m.

On Thu, Jul 02, 2020 at 01:42:58PM +0100, Srdjan Todorovic wrote:

...

Hi Chris,

On Thu, 2 Jul 2020 at 13:11, Chris Green <cl@isbd.net> wrote:

...
I want to extend the 'cd' command slightly so that I can execute some specific actions when entering (and leaving) a particular directory hierarchy.

Would there be some sort of auditing / file monitoring framework available instead?

...
So I need to create a bash function called 'cd' to do this, but I still need to call the underlying bash built-in cd. Is there any way of doing this?

Yes there is.

https://unix.stackexchange.com/questions/132623/order-of-executables-started...

See the answer about using the backslash. This one was new to me.

Even simpler there's a builtin command 'builtin' which forces use of the bash builtin, just what I need, thank you! -- Chris Green