List account and distribution list details in Zimbra

list.sh

sudo su - zimbra

# list all accounts and print out account name and aliases
for i in `zmprov -l gaa` ; do zmprov ga $i zimbraMailAlias ; done

# list all distribution lists and any members and/or aliases
for i in `zmprov gadl` ; do zmprov gdl $i zimbraMailAlias zimbraMailForwardingAddress ; done

the better syntax should be

for i in zmprov -l gaa ; do zmprov -l gaa $i displayName description; done > /home/cobain-donk.txt

It's an ugly solution to spawn a new zmprov instance for every account.
A better solution is to use the output from zmprov gaa to prepare a sequence of ga commands for zmprov and ingest it back into another zmprov process. The idea looks somewhat like this (it doesn't save the addresses themselves so you might want to run the gaa another time just to get the primary emails; or you might want to save them to a variable first, whatever):
zmprov -l gaa | sed 's/.*/ga & zimbraMailAlias/' | zmprov

The difference in running time is huge.

$ time (zmprov -l gaa | sed 's/.*/ga & zimbraMailAlias/' | zmprov > /dev/null)

real	0m6.570s
user	0m16.566s
sys	0m1.771s
$ time (for i in `zmprov -l gaa`; do zmprov ga $i zimbraMailAlias; done > /dev/null)

real	3m41.123s
user	8m2.881s
sys	0m47.298s

And I have only 47 accounts in my zimbra.

Hello, I am trying to migrate the aliases from an old server to a modern server, exporting the aliases has been easy, I have done it this way.

I create the entire mailing list of any zimbra domain

su zimbra
zmprov -l gaa >emails.txt

I get the list of the aliases of the email accounts this way

mkdir -p alias/
chown -R zimbra:zimbra alias/
su zimbra
for i in cat emails.txt; do zmprov ga $i | grep zimbraMailAlias |awk '{print $2}' > alias/$i.txt ;echo $i ;done

Once I have the aliases for each email account, we proceed to delete the email files that do not have any aliases in this way from the list.

find alias/ -type f -empty | xargs -n1 rm -v

Now I upload the files obtained that are emails.txt and the directory of /alias to the destination server, and here is where I have the error, I have made a script to perform the upload but I think I'm doing it wrong, I do not know if it is for permissions or otherwise, the script is this.

#!/bin/bash
for i in cat /opt/zimbra/migracion/emails.txt
do
if [ -f "alias/$i.txt" ]; then
for j in grep '@' /opt/zimbra/migracion/alias/$i.txt
do
zmprov aaa $i $j
echo "$i HAS ALIAS $j --- Restored"
done
fi
done

Can you tell me what mistake I am making?
Greetings and thanks