...and here is a command to delete all pseudonyms from the server except for a specific list of users (I recommend leaving the pseudonyms for 'admin' and 'everyone', at least):
#list accounts, partial accounts, pseudonyms, or partial pseudonyms to be ignored, separated by vertical bar
IGNORE='admin|everyone|rita'
db accounts print |grep \=pseudonym |egrep -vi "$IGNORE" |awk -F[=\|] '{print $4 " | " $1}' |while read l; do lat-pseudonyms -d -f -c "$l" ; done
This version deletes all of the pseudonyms with format "x.y" or "x_y":
# delete all pseudonyms with format "x.y" or "x_y"
db accounts print |grep '^.\+[\._].\+=pseudonym' |awk -F[=\|] '{print $4 " | " $1}' |while read l; do lat-pseudonyms -d -f -c "$l" ; done
I have tried several times in the past to find and disable the code that generates the pseudonyms in the web interface with no success...