Quickly create a list of email addresses / usernames in the format usernameprefixNumber@domain.name
#!/bin/bash userprefix=$1; numberofusers=$2; domain=$3; filetosave=$4 counter=1; if [ $# -ne 4 ]; then echo Insufficient arguments: echo "Usage: $0 userprefix numberofusers domainname filetosave" echo " - enter user prefix, e.g. demo" echo " - enter number of users,e.g. 100" echo " - enter domain/hostname, e.g. some-hostname.domain.com" echo " - file to save the result in" exit 1 fi touch $4 ; while [[ $counter -le $numberofusers ]]; do echo Creating User $counter; echo "$userprefix$counter@$domain" >> $4; let "counter += 1"; done