random shell tips

Dovecot Sieve filters - test and refilter

sieve-filter .dovecot.sieve INBOX 2>&1 | less

Well, this doesn't do anything. To really execute the filters, you need the -e flags, and to write to the INBOX for real, you need the -w flag as well, so the real run looks something more like this:

sieve-filter -e -W -v .dovecot.sieve INBOX > refilter.log 2>&1

GPG cli encrypt

gpg -r B51077AC -u 272250F0 --armor -e toencrypt.txt

get public IP on CLI

curl ifconfig.co
curl -4 ifconfig.co (for v4)

APT - search for versions + install

apt-cache madison <packagename>
apt install <packagename>=<version>