Re: Replacement for declare in dash?

[Guido Berhoerster <guido+kernel.org@xxxxxxxxxxxxxxxx>]

* Alexander Huemer <alexander.huemer@xxxxx> [2013-10-16 14:26]:
> Hi,
> 
> I wrote a shell script on a non-Debian system and assumed, in my 
> greenness, that testing it with #!/bin/bash --posix would ensure that 
> the script would run under dash too. I was wrong. Of course that is the 
> fault of bash and not dash.
> Here is a simplified form of the script:
> 
> #!/bin/dash
> # This works when run with #!/bin/bash --posix
> 
> func() {
>         cat /proc/1/environ
> }
> 
> sudo sh -c "$(declare -f func); func"
> 
> Can I do anything equivalent with dash?

No.

> I did not find anything in the docs, but hope dies last.

This is even ugly in bash because you're abusing a function as a
variable. And the shell you get with "sudo sh" depends on your
system configuration.
You can embed commands using a here-doc instead of func()...

sudo /bin/dash << "EOF"
cat /proc/1/environ
# ...
EOF

> Of course I can swap the function out in a seperate script, but I'd like 
> to avoid that.

...but this seems to be the right thing to do rather than
embedding a script inside a script.
-- 
Guido Berhoerster
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