Re: scope of variable in prerm script

[Goswin von Brederlow <goswin-v-b@web.de>]

Brian Mercer Esq <brian@mercerlegal.com> writes:

> OK, probably a newb question:
>
> In Ondrej's php5-fpm.prerm script he has:
>
> [ -z "$DPKG_MAINTSCRIPT_NAME" ] && DPKG_MAINTSCRIPT_NAME=php5-fpm
> dpkg-maintscript-helper mv_conffile /etc/php5/fpm/main.conf
> /etc/php5/fpm/php-fpm.conf 5.3.5-1 -- "$@"
>
> but for mine I have to do:
>
> export DPKG_MAINTSCRIPT_NAME=php5-fpm
> dpkg-maintscript-helper mv_conffile /etc/php5/fpm/main.conf
> /etc/php5/fpm/php-fpm.conf 5.3.5-1 -- "$@"
>
> Both using #!/bin/sh.  How come the variable is available to the child
> script in his prerm script but not mine?  Thanks.

That seems backwards:

mrvn@frosties:~% sh
$ export DPKG_MAINTSCRIPT_NAME=php5-fpm; sh -c 'echo $DPKG_MAINTSCRIPT_NAME'
php5-fpm
$ exit
mrvn@frosties:~% sh
$ [ -z "$DPKG_MAINTSCRIPT_NAME" ] && DPKG_MAINTSCRIPT_NAME=php5-fpm; sh -c 'echo $DPKG_MAINTSCRIPT_NAME'

$ exit


Maybe he has an export somewhere else in the script?

mrvn@frosties:~% sh
$ export DPKG_MAINTSCRIPT_NAME;  [ -z "$DPKG_MAINTSCRIPT_NAME" ] && DPKG_MAINTSCRIPT_NAME=php5-fpm; sh -c 'echo $DPKG_MAINTSCRIPT_NAME'
php5-fpm
$ exit

MfG
        Goswin