Unix Shell Scripting - Add Extra Column In While Loop - bash

Question

I have a file server.txt containing different hostnames like:
hostname1.com
hostname2.com
My shell script servers.sh is written to get the /etc/passwd and /etc/group files from the list in servers.txt file.
I wish to add the hostname from which the entries came from in my final output file. My script looks something like below:
while read HOST ;
do
sshpass -p $password ssh -n $username#$HOST 'cat /etc/passwd'>>users.txt
sshpass -p $password ssh -n $username#$HOST 'cat /etc/group'>>groups.txt
done < servers.txt
echo -e "UserName;UID;GID;HomeDir;Shell" > final_users.csv
cut -d: -f1,3,4,6,7 users.txt | tr ':' ';'>> final_users.csv
echo -e "GroupName;GID;Members" > final_groups.csv
awk -F '[:,]' '{for(i=4;i<=NF;i++)print$1";"$3";"$i}' groups.txt >> final_groups.csv
The goal is to add another column in both final_users.csv and final_groups.csv like hostname so I can know which servers each entry came from.

Answer 1

Try like this:
while read HOST ;
do
sshpass -p $password ssh -n $username#$HOST 'cat /etc/passwd'>>users.txt
sshpass -p $password ssh -n $username#$HOST 'cat /etc/group'>>groups.txt
done < servers.txt
echo -e "UserName;UID;GID;HomeDir;Shell;Hostname" > final_users.csv
echo "`cut -d: -f1,3,4,6,7 users.txt | tr ':' ';'`;$HOST">> final_users.csv
echo -e "GroupName;GID;Members;Hostname" > final_groups.csv
echo "`awk -F '[:,]' '{for(i=4;i<=NF;i++)print$1";"$3";"$i}' groups.txt`;$HOST" >> final_groups.csv

Answer 2

Think I got it:
while read HOST ;
do
sshpass -p $password ssh -n $username#$HOST 'cat /etc/passwd'>>users_1.txt
while IFS= read -r line; do echo "$line:"$HOST; done < users_1.txt >> users_2.txt
sshpass -p $password ssh -n $username#$HOST 'cat /etc/group'>>groups_1.txt
while IFS= read -r line; do echo "$line:"$HOST; done < groups_1.txt >> groups_2.txt
done < servers.txt
echo -e "UserName;UID;GID;HomeDir;Shell;Hostname" > final_users.csv
cut -d: -f1,3,4,6,7,8 users_2.txt | tr ':' ';'>> final_users.csv
echo -e "GroupName;GID;Members;Hostname" > final_groups.csv
awk -F'[:,]' -v OFS=';' '{for(i=4;i<NF;i++) print $1, $3, $i, $NF}' groups_2.txt >> final_groups.csv