bug#25699: GZIPs deprecated environment variable

[Paul Eggert]

Bachsau wrote:
> I can use an alias or script as suggested by gzip itself, but that will
> not be picked up by update scripts and such stuff

Sure it will. Just rename /bin/gzip to /bin/gzip.real, and create a shell script 
/bin/gzip that looks like this:

#!/bin/sh
exec gzip.real -9 "$@"

You're the sysadmin, so you can do this. (And if you were not the sysadmin, you 
wouldn't be able to edit any global configuration file either.)

The GZIP environment variable leads to functionality and security problems, 
which is why it's being deprecated.