using apt command line option to clear a list

[jayen]

I can see in the apt.conf manpage that #clear is used to clear a list, but I can't figure out the syntax to use this from the command line. I've tried:

Code: Select all

$ apt-config -o 'DPkg::Post-Invoke=#clear' dump
DPkg::Post-Invoke "#clear";
DPkg::Post-Invoke:: "if [ -d /var/lib/update-notifier ]; then touch /var/lib/update-notifier/dpkg-run-stamp; fi; if [ -e /var/lib/update-notifier/updates-available ]; then echo > /var/lib/update-notifier/updates-available; fi ";

Code: Select all

$ apt-config -o 'DPkg::Post-Invoke#clear' dump
E: Option DPkg::Post-Invoke#clear: Configuration item specification must have an =<val>.

Code: Select all

$ apt-config -o 'DPkg::Post-Invoke::=#clear' dump
DPkg::Post-Invoke "";
DPkg::Post-Invoke:: "if [ -d /var/lib/update-notifier ]; then touch /var/lib/update-notifier/dpkg-run-stamp; fi; if [ -e /var/lib/update-notifier/updates-available ]; then echo > /var/lib/update-notifier/updates-available; fi ";
DPkg::Post-Invoke:: "#clear";

Code: Select all

$ apt-config -o 'DPkg { Post-Invoke { #clear } }' dump
E: Option DPkg { Post-Invoke { #clear } }: Configuration item specification must have an =<val>.

Any ideas?
Thanks.