Re: Re: add custom environment variable in bash source code

[Alex fxmbsw7 Ratchev]

On Thu, Aug 18, 2022, 01:19 <b1431736437@163.com> wrote:

>
> Because I'm using Android, Android doesn't support #!/bin/sh and #!/bin/bash, 
> there is a dynamic library that fixes it, so I want to automatically add 
> LD_PRELOAD before starting bash to make this dynamic library work , I want to 
> modify the source code of bash to make it effective, not the bash.bashrc and 
> profile files in the etc directory,what should I do, can you send a video 
> attachment to teach me?
>

erm, im not yet a .c number




> 在 2022-08-18 00:19:24，"Alex fxmbsw7 Ratchev" <fxmbsw7@gmail.com> 写道：
>
> maybe just 'eval "declare -gx var=value"' in bash.c code
>
>
what i meant with this is hint at something a .c coder can do
can u code .c ?

.. search in the codes the .c named ld preload and ld paths identifiers (
how they are named ) then search for those, to see where they act
and add a static prefix yours at a safe position and safe code


> On Wed, Aug 17, 2022, 17:53 Chet Ramey <chet.ramey@case.edu> wrote:
>
>> On 8/16/22 10:09 PM, b1431736437@163.com wrote:
>>
>> > Bash Version: 5.1
>> > Patch Level: 16
>> > Release Status: release
>> >
>> > Description:
>> >          excuse me, how can I join the custom environment variable into
>> the source code of Bash, and see this variable when execute env
>>
>> What is it you want to do? You rarely need to add code to bash to do
>> something like that.
>>
>> --
>> ``The lyf so short, the craft so long to lerne.'' - Chaucer
>>                  ``Ars longa, vita brevis'' - Hippocrates
>> Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/
>>
>>
>>