How to start saving money
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Why it is important to start saving
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How much money should I save?
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What percentege of my income should go to savings?
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While working on a postfix/dovecot non-mysql virtual domain configuration, I needed a simple admin script to add new users. The script below is what I came up with after about 30 minutes.I was unable to find something that met my needs on the interweb, so I hope this post finds someone else in need!Please submit bugs/suggestions to: nick.wilkens@mnxsolutions.com[code]#!/bin/bash# bugs/suggestions to: nick.wilkens@mnxsolutions.com# 1/29/2012USERSFILE=/etc/dovecot/usersPOSTFIXVIRTUAL_MAILBOX=/etc/postfix/virtual_mailbox_mapsPOSTFIXVIRTUAL_DOMAINS=/etc/postfix/virtual_domainsfunction validate_username() { username=$1 echo $username| egrep -iq '([[:alnum:]_.]+@[[:alnum:]_]+?.[[:alpha:].]{2,6})'; RC=$? if [ ${RC} -ne 0 ] then echo "Invalid username, please ensure user@domain.tld format ($RC)" exit 1 fi}function get_username() { echo -n "Username <user@domain.com>: " read username validate_username ${username}}function get_password() { randpw=$(mkpasswd -l 15 -d 3 -C 5) echo echo "Password suggestion: ${randpw}" echo echo -n "Password: " read password1 echo -n "Password (again): " read password2 if [ "${password1}" != "${password2}" ] then echo "Passwords miss-match, retry" get_password fi}function gen_ssha512() { local password=$1 doveadm pw -s SSHA512 -p "$password"}function check_dovecot_user() { grep -iq $username $USERSFILE; RC=$? if [ "${RC}" -eq 0 ] then echo "User already exists in $USERSFILE, please check." echo "For reference, or manual editing here was the computed string to use" echo "${username}:${password}" exit 1 fi}function check_postfix_maps() { grep -iq $username $POSTFIXVIRTUAL_MAILBOX; RC=$? if [ "${RC}" -eq 0 ] then echo "User already exists in $POSTFIXVIRTUAL_MAILBOX, please check." echo "For reference, or manual editing here was the computed string to use" echo echo "${username} OK" echo echo "You will also need to run 'postmap hash:$POSTFIXVIRTUAL_MAILBOX' if you edit this file directly" exit 1 fi}function update_postfix_virtual() { local domain=`echo $username|cut -d@ -f2` grep -iq $domain $POSTFIXVIRTUAL_DOMAINS; RC=$? # Add the domain if we don't find it in grep if [ "${RC}" -ne 0 ] then echo "${domain}" >> $POSTFIXVIRTUAL_DOMAINS fi}get_usernameget_passwordpassword=$(gen_ssha512)check_dovecot_usercheck_postfix_mapsupdate_postfix_virtualecho "${username}:${password}" >> $USERSFILEecho "${username} OK" >> $POSTFIXVIRTUAL_MAILBOXpostmap hash:$POSTFIXVIRTUAL_MAILBOXservice postfix reloadecho "Done"[/code]
