[筆記] 解決 psexec 執行screen capture 的程式時,只會抓到一片黑的問題

一開始這樣指令這樣下

psexec \192.168.70.133 -s “\192.168.70.133\c$\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\test_free_image.exe”
結果發現雖然會執行,但是抓到的畫面只有一片黑

後來翻了一下google,發現跟什麼互動式登入有關,要多加個參數 -i

psexec \192.168.70.133 -s -i “\192.168.70.133\c$\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\test_free_image.exe”
這樣子就可以了!

 

 

[雜念] 群暉 Synology 的研討會邀請函,主旨還保留 test !?

前幾天收到群暉寄來的研討會邀請函,主旨如下

「test【即刻報名 5/9 Synology 年度研討會 】擁抱全方位儲存平台 突破新世代 IT 挑戰」

都已經發給客戶了,主旨還掛著 test?可能是測試完忘記拿掉吧。小地方雖說無傷大雅,但這麼大規模的公司,似乎該更注意一些才是。

[筆記]自製蒜頭辣椒醬

Julia Teng 發表於 飛利浦智慧萬用鍋的料理方法分享園地

做法很簡單,新鮮蒜頭半斤剝皮切碎,新鮮辣椒200公克(愛吃辣的可以買朝天椒)洗淨晾乾或擦乾後切碎。全部放入玻璃罐中,放入3湯匙的鹽,攪拌一下,讓鹽均勻分佈在蒜頭和辣椒上,再倒入米酒至八分滿。加蓋後放置陰涼處1~1.5小時醃一下,再倒入醬油至全滿。稍微攪拌一下,蓋上蓋子後放冰箱醃1星期即可享用香香辣辣的蒜頭辣椒醬油囉!每次食用要用乾淨無水的湯匙搯出來,我的經驗是可以保存半年以上。(p.s. 建議切辣椒時,沒拿刀的手要戴吃手扒雞的透明手套,或是用食物料理機處理,不然手會辣到像火燒。

 

2017-01-20_15-01-59

[筆記] 用 grep 找出符合 IP address樣式的紀錄

grep -Eo ‘[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}’

[雜念] 一例一休對薪資成本的影響

假設有一家A公司,有100個員工,每個人的薪資都是36000,時薪為150,每年人均營收貢獻為150萬台幣,所以營業額為15000萬,稅後利潤10% 1500萬都是老闆的

這間公司所有員工除了週一到週五的八個小時外,每兩個週六要來上一天八小時班(大小禮拜的概念)

同時一例一休後,上班時數及產出都不變

加班費計算網址: http://labweb.mol.gov.tw/index_2.html#monthlyPay=36000&regularDayOffWorkReason=disaster&workhours=8%2C8%2C8%2C8%2C8%2C8%2C0

 

在一例一休前

每人單月薪資含加班費:36000 + 7002(加班費) = 37400 ,單月薪資小計:37400 100 = 3740000,年度薪資含加班費總計:44880000

一例一休後

每人單月薪資含加班費: 36000 + 19002 = 39800,單月薪資小計: 39800 100 = 3980000,年度薪資含加班費總計:47760000

還是一樣一年做一億五千萬,稅後利潤10% = 1500萬,但是人事成本增加了(47760000-44880000) = 2880000,所以老闆賺的變成15000000-2880000 = 12120000

是原本的80.8%(12120000/15000000) ,也就是說是老闆少賺了20%左右..

[筆記] PIHOLE - 利用 DNS Server 阻絕網頁廣告

官網:https://pi-hole.net/

簡單說,就是建立一台DNS Server ,上面有一些有組織在維護的域名黑名單

當裝置在瀏覽網頁時,需要先透過DNS去反查出IP,如果反查的域名在黑名單中,會自動將域名轉為 127.0.0.1,進而達到阻擋廣告(甚至連載入都不會載入)

p.s ADBLOCK之類的套件,是等到廣告載入完了,才去擋掉

這種狀況在手機上瀏覽網頁時特別明顯,很容易就受到廣告的干擾!

這個概念很不錯!甚至一些透過C&C中繼伺服器運作的病毒,也可以透過這種方式阻擋掉!

[雜念] 生活市集 好康電子報的 Division by Zero 錯誤

沒啥好說,直接看圖!

2016-08-01_08-28-07

 

[MV] Davichi / T-ara / We were in love

PTT 簽名檔-寒狗

有一天,
神問狗說:「狗阿~你喜歡住熱帶還是寒帶?」
狗:「當然是熱帶囉!」
神:「為什麼呢?」
狗:「我的良心告訴我,當熱狗比當寒狗好。」

[每日一字] cunt

2016-07-11_13-16-42

[雜念] 燦坤的電子報騙人啦! HEUM 生菜沙拉調理機 價格不實!

電子報裡面說HEUM 生菜沙拉調理機 今日限定「$699」

結果點進去網頁看,還是 $ 1980 ….

本來頗心動的說,看到售價就涼了一半….

 

2016-06-08_08-27-55

 

[筆記] iredmail 的amavisd 預設好像有問題

從外面寄信時,會在 maillog 看到類似這樣的錯誤,不過信件還是可以寄出就是

May 11 17:23:13 iredmail amavis[1582]: (01582-02) TempDir::prepare_file: /var/spool/amavisd/tmp/amavis-20160511T172313-01582-kSxYqpMz/email.txt no longer exists, can’t re-use it
雖然信件還是可以正常寄出,不過看到有error 就是不爽 XD

看起來像是權限的問題

去找了一下/var/spool/amavisd 這個目錄的權限,應該是沒有問題

drwxr-x— 7 amavis amavis 4096 May 11 17:32 amavisd
又看到網路上有人說這是因為clam帳號權限的問題

 

The problem with EPEL is that the “clam” user does not have access to the amavis folders. To get this to work with EPEL is pretty staight forward:

解決方法也很簡單


usermod -a -G amavis clam

chmod g+rx /var/spool/amavisd/tmp

 

不過呢,事情當然沒有這麼簡單..

改完這些設定後,要重啟 amavisd 就出問題了,一直失敗

May 11 17:30:27 iredmail amavis[10713]: starting. /usr/sbin/amavisd at iredmail.cowbay.org amavisd-new-2.9.1 (20140627), Unicode aware, LANG=”en_US.UTF-8”

May 11 17:30:27 iredmail amavis[10713]: (!)Net::Server: 2016/05/11-17:30:27 Pid_file already exists for running process (1323)… aborting\n\n at line 145 in file /usr/share/perl5/vendor_perl/Net/Server.pm
不知道為何,系統的 amavisd 行程會一直咬著不放

解決方法就是去砍掉系統內的 amavisd 再重啟服務

ps -aux |grep amavis
找出 id 後,砍光光

然後 service amavisd start 就可以了!

 

 

 

[筆記] 在CentOS 為 iredmail 加入 letsencrypt 的FREE SSL 認證

在CentOS 為 iredmail 加入 letsencrypt 的FREE SSL 認證

先升級python27

yum install -y centos-release-SCL

yum install -y python27

`</pre>

<pre>`alias python=python2.7


再來,參考網友 dsp3 寫的步驟

http://www.dsp3.org/integrating-lets-encrypt-with-iredmail/

其實沒很難啦,LetsEncrypt 基本上會幫忙設定到好(如果用 apache的話)

不過這樣的設定只有WEB會生效

 

 

[筆記] Iredmail + Postfix Admin dovecot 的一些設定

/etc/dovecot/dovecot.conf

重點

disable_plaintext_auth = no

mail_location = maildir:/var/vmail/%d/%n:INDEX=/var/vmail/%d/%n/indexes

 

 

#ssl_dh_parameters_length = 2048

#ssl_prefer_server_ciphers = yes

IP ranges specified by login_trusted_networks setting are assumed to be secure.

#login_trusted_networks = 127.0.0.1

With disable_plaintext_auth=yes AND ssl=required, STARTTLS is mandatory.

Set disable_plaintext_auth=no AND ssl=yes to allow plain password transmitted

insecurely.

disable_plaintext_auth = no

Allow plain text password per IP address/net

#remote 192.168.0.0/24 {

disable_plaintext_auth = no

}

Mail location and mailbox format.

#mail_location = maildir:%Lh/Maildir/:INDEX=%Lh/Maildir/

mail_location = maildir:/var/vmail/%d/%n:INDEX=/var/vmail/%d/%n/indexes

Authentication related settings.

Append this domain name if client gives empty realm.

auth_default_realm = abc.org

Authentication mechanisms.

auth_mechanisms = PLAIN LOGIN

Limits the number of users that can be logging in at the same time.

Default is 100. This can be overridden by process_limit = in

service [protocol] block.

e.g.

protocol imap-login {

process_limit = 500

}

#default_process_limit = 100

service auth {

unix_listener /var/spool/postfix/private/dovecot-auth {

user = postfix

group = postfix

mode = 0666

}

unix_listener auth-master {

user = vmail

group = vmail

mode = 0666

}

unix_listener auth-userdb {

user = vmail

group = vmail

mode = 0660

}

}

LMTP server (Local Mail Transfer Protocol).

Reference: http://wiki2.dovecot.org/LMTP

service lmtp {

user = vmail

For higher volume sites, it may be desirable to increase the number of

active listener processes. A range of 5 to 20 is probably good for most

sites.

process_min_avail = 5

Logging.

Require ‘info_log_path =’ in ‘protocol lmtp { }’ block.

executable = lmtp -L

Listening on socket file and TCP

unix_listener /var/spool/postfix/private/dovecot-lmtp {

user = postfix

group = postfix

mode = 0600

}

inet_listener lmtp {

Listen on localhost (ipv4)

address = 127.0.0.1

port = 24

}

}

Virtual mail accounts.

userdb {

args = /etc/dovecot/dovecot-mysql.conf

driver = sql

}

passdb {

args = /etc/dovecot/dovecot-mysql.conf

driver = sql

}

Master user.

Master users are able to log in as other users. It’s also possible to

directly log in as any user using a master password, although this isn’t

recommended.

Reference: http://wiki2.dovecot.org/Authentication/MasterUsers

auth_master_user_separator = *

passdb {

driver = passwd-file

args = /etc/dovecot/dovecot-master-users

master = yes

}

plugin {

auth_socket_path = /var/run/dovecot/auth-master

Quota configuration.

Reference: http://wiki2.dovecot.org/Quota/Configuration

quota = dict:user::proxy::quotadict

quota_rule = *:storage=1G

#quota_rule2 = *:messages=0

#quota_rule3 = Trash:storage=1G

#quota_rule4 = Junk:ignore

Quota warning.

#

If user suddenly receives a huge mail and the quota jumps from

85% to 95%, only the 95% script is executed.

#

Only the command for the first exceeded limit is executed, so configure

the highest limit first.

quota_warning = storage=100%% quota-warning 100 %u

quota_warning2 = storage=95%% quota-warning 95 %u

quota_warning3 = storage=90%% quota-warning 90 %u

quota_warning4 = storage=85%% quota-warning 85 %u

allow user to become max 10% (or 50 MB) over quota

quota_grace = 10%%

#quota_grace = 50 M

Custom Quota Exceeded Message.

You can specify the message directly or read the message from a file.

#quota_exceeded_message = Quota exceeded, please try again later.

#quota_exceeded_message = </path/to/quota_exceeded_message.txt

Plugin: autocreate. Create and subscribe to default IMAP folders.

autocreate = INBOX

autocreate2 = Sent

autocreate3 = Trash

autocreate4 = Drafts

autocreate5 = Junk

autosubscribe = INBOX

autosubscribe2 = Sent

autosubscribe3 = Trash

autosubscribe4 = Drafts

autosubscribe5 = Junk

Plugin: expire.

#expire = Trash 7 Trash/* 7 Junk 30

#expire_dict = proxy::expire

ACL and share folder

acl = vfile

acl_shared_dict = proxy::acl

By default Dovecot doesn’t allow using the IMAP “anyone” or

“authenticated” identifier, because it would be an easy way to spam

other users in the system. If you wish to allow it,

#acl_anyone = allow

Pigeonhole managesieve service.

Reference: http://wiki2.dovecot.org/Pigeonhole/Sieve/Configuration

Per-user sieve settings.

sieve_dir = %Lh/sieve

sieve = %Lh/sieve/dovecot.sieve

Global sieve settings.

sieve_global_dir = /var/vmail/sieve

Note: if user has personal sieve script, global sieve rules defined in

sieve_default will be ignored. Please use sieve_before or

sieve_after instead.

#sieve_default =

sieve_before = /var/vmail/sieve/dovecot.sieve

#sieve_after =

The maximum number of redirect actions that can be performed during a

single script execution.

The meaning of 0 differs based on your version. For pigeonhole-0.3.0 and

beyond this means that redirect is prohibited. For older versions,

however, this means that the number of redirects is unlimited.

#sieve_max_redirects = 4

}

service quota-warning {

executable = script /usr/local/bin/dovecot-quota-warning.sh

unix_listener quota-warning {

user = vmail

group = vmail

mode = 0660

}

}

service dict {

unix_listener dict {

mode = 0660

user = vmail

group = vmail

}

}

dict {

#expire = db:/var/lib/dovecot/expire/expire.db

quotadict = mysql:/etc/dovecot/dovecot-used-quota.conf

acl = mysql:/etc/dovecot/dovecot-share-folder.conf

}

}

protocol lda {

Reference: http://wiki2.dovecot.org/LDA

mail_plugins = $mail_plugins sieve autocreate

auth_socket_path = /var/run/dovecot/auth-master

log_path = /var/log/dovecot-sieve.log

lda_mailbox_autocreate = yes

lda_mailbox_autosubscribe = yes

postmaster_address = root

}

protocol lmtp {

Log file

info_log_path = /var/log/dovecot-lmtp.log

Plugins

mail_plugins = quota sieve

postmaster_address = postmaster

lmtp_save_to_detail_mailbox = yes

recipient_delimiter = +

}

protocol imap {

mail_plugins = $mail_plugins imap_quota autocreate imap_acl

imap_client_workarounds = tb-extra-mailbox-sep

Maximum number of IMAP connections allowed for a user from each IP address.

NOTE: The username is compared case-sensitively.

Default is 10.

Increase it to avoid issue like below:

“Maximum number of concurrent IMAP connections exceeded”

mail_max_userip_connections = 30

}

protocol pop3 {

mail_plugins = $mail_plugins

pop3_client_workarounds = outlook-no-nuls oe-ns-eoh

pop3_uidl_format = %08Xu%08Xv

Maximum number of IMAP connections allowed for a user from each IP address.

NOTE: The username is compared case-sensitively.

Default is 10.

mail_max_userip_connections = 30

}

Login processes. Refer to Dovecot wiki for more details:

http://wiki2.dovecot.org/LoginProcess

service imap-login {

#inet_listener imap {

port = 143

}

#inet_listener imaps {

port = 993

ssl = yes

}

service_count = 1

To avoid startup latency for new client connections, set process_min_avail

to higher than zero. That many idling processes are always kept around

waiting for new connections.

#process_min_avail = 0

number of simultaneous IMAP connections

process_limit = 500

vsz_limit should be fine at its default 64MB value

 

}

service pop3-login {

#inet_listener pop3 {

port = 110

}

#inet_listener pop3s {

port = 995

ssl = yes

}

service_count = 1

number of simultaneous POP3 connections

#process_limit = 500

}

service managesieve-login {

inet_listener sieve {

Listen on localhost (ipv4)

address = 127.0.0.1

port = 4190

}

}

namespace {

type = private

separator = /

prefix =

#location defaults to mail_location.

inbox = yes

}

namespace {

type = shared

separator = /

prefix = Shared/%%u/

location = maildir:%%Lh/Maildir/:INDEX=%%Lh/Maildir/Shared/%%u

this namespace should handle its own subscriptions or not.

subscriptions = yes

list = children

}

Public mailboxes.

Refer to Dovecot wiki page for more details:

http://wiki2.dovecot.org/SharedMailboxes/Public

#namespace {

type = public

separator = /

prefix = Public/

#

# CONTROL=: Mark this public folder as read-only mailbox

# INDEX=: Per-user \Seen flag

location = maildir:/var/vmail/public/:CONTROL=~/Maildir/public:INDEX=~/Maildir/public

#

# Allow users to subscribe to the public folders.

subscriptions = yes

 

/etc/dovecot/dovecot-mysql.conf

有 # 的是iredmail 自動做好的設定

註解掉之後新增最後面的幾行,改成自己的DB、帳號、密碼、確認一下uid 跟 postfix的main.cf 一樣

#driver = mysql

#default_pass_scheme = CRYPT

#connect = host=127.0.0.1 dbname=vmail user=vmail password=NP5eaW3VSRogGT5bx0qaHMm7CKemRY

Required by ‘doveadm mailbox …’.

#iterate_query = SELECT username AS user FROM mailbox

#password_query = SELECT password, allow_nets FROM mailbox WHERE username=’%u’ AND enable%Ls%Lc=1 AND active=1

#user_query = SELECT \

‘%u’ AS master_user, \

CONCAT(mailbox.storagebasedirectory, ‘/‘, mailbox.storagenode, ‘/‘, mailbox.maildir) AS home, \

CONCAT(‘:bytes=’, mailbox.quota1048576) AS quota_rule \

#FROM mailbox,domain \

#WHERE mailbox.username=’%u’ \

AND mailbox.domain=’%d’ \

AND mailbox.enable%Ls%Lc=1 \

AND mailbox.domain=domain.domain \

AND domain.backupmx=0 \

AND domain.active=1 \

AND mailbox.active=1

driver = mysql

connect = host=127.0.0.1 dbname=postfix user=postfix password=postfixadmin

default_pass_scheme = MD5-CRYPT

user_query = SELECT ‘/var/vmail/%d/%n’ as home, 2000 AS uid, 2000 AS gid FROM mailbox WHERE username = ‘%u’

password_query = SELECT password FROM mailbox WHERE username = ‘%u’
 

 

postfix main.cf

重點 uid 設定要一樣 都是 2000

原則上就是在原本的 proxy:mysql 這些設定後面,加入 postfixadmin 的設定

然後有一些只有 iredmail 有, postfix admin 沒有的,都先註解掉

像是底下這部分

#

Lookup virtual mail accounts

#

#transport_maps =

proxy:mysql:/etc/postfix/mysql/transport_maps_user.cf

proxy:mysql:/etc/postfix/mysql/transport_maps_domain.cf

#sender_dependent_relayhost_maps =

proxy:mysql:/etc/postfix/mysql/sender_dependent_relayhost_maps.cf

Lookup table with the SASL login names that own the sender (MAIL FROM) addresses.

#smtpd_sender_login_maps =

proxy:mysql:/etc/postfix/mysql/sender_login_maps.cf

 

其他的設定如下

 

alias_database = hash:/etc/postfix/aliases

alias_maps = hash:/etc/postfix/aliases

allow_min_user = no

allow_percent_hack = no

biff = no

body_checks = pcre:/etc/postfix/body_checks.pcre

command_directory = /usr/sbin

config_directory = /etc/postfix

daemon_directory = /usr/libexec/postfix

data_directory = /var/lib/postfix

debug_peer_level = 2

disable_vrfy_command = yes

enable_original_recipient = no

header_checks = pcre:/etc/postfix/header_checks

home_mailbox = Maildir/

inet_interfaces = all

inet_protocols = ipv4

lmtp_tls_mandatory_protocols = !SSLv2 !SSLv3

lmtp_tls_protocols = !SSLv2 !SSLv3

mail_owner = postfix

mailbox_command = /usr/libexec/dovecot/deliver

mailq_path = /usr/bin/mailq.postfix

message_size_limit = 15728640

mydestination = $myhostname, localhost, localhost.localdomain

mydomain = iredmail.cowbay.org

myhostname = iredmail.cowbay.org

mynetworks = 127.0.0.1

myorigin = iredmail.cowbay.org

newaliases_path = /usr/bin/newaliases.postfix

proxy_read_maps = $canonical_maps $lmtp_generic_maps $local_recipient_maps $mydestination $mynetworks $recipient_bcc_maps $recipient_canonical_maps $relay_domains $rela

y_recipient_maps $relocated_maps $sender_bcc_maps $sender_canonical_maps $smtp_generic_maps $smtpd_sender_login_maps $transport_maps $virtual_alias_domains $virtual_ali

as_maps $virtual_mailbox_domains $virtual_mailbox_maps $smtpd_sender_restrictions $sender_dependent_relayhost_maps

queue_directory = /var/spool/postfix

recipient_bcc_maps = proxy:mysql:/etc/postfix/mysql/recipient_bcc_maps_user.cf proxy:mysql:/etc/postfix/mysql/recipient_bcc_maps_domain.cf

recipient_delimiter = +

relay_domains = $mydestination proxy:mysql:/etc/postfix/mysql/relay_domains.cfsender_bcc_maps = proxy:mysql:/etc/postfix/mysql/sender_bcc_maps_user.cf proxy:mysql:/etc/postfix/mysql/sender_bcc_maps_domain.cf

sendmail_path = /usr/sbin/sendmail.postfix

setgid_group = postdrop

smtp_tls_CAfile = $smtpd_tls_CAfile

smtp_tls_loglevel = 1

smtp_tls_mandatory_protocols = !SSLv2 !SSLv3

smtp_tls_note_starttls_offer = yes

smtp_tls_protocols = !SSLv2 !SSLv3

smtp_tls_security_level = may

smtpd_data_restrictions = reject_unauth_pipelining

smtpd_end_of_data_restrictions = check_policy_service inet:127.0.0.1:7777

smtpd_helo_required = yes

smtpd_helo_restrictions = permit_mynetworks permit_sasl_authenticated reject_non_fqdn_helo_hostname reject_invalid_helo_hostname check_helo_access pcre:/etc

/postfix/helo_access.pcre

smtpd_recipient_restrictions = reject_unknown_recipient_domain reject_non_fqdn_recipient reject_unlisted_recipient check_policy_service inet:127.0.0.1:7777

permit_mynetworks permit_sasl_authenticated reject_unauth_destination

smtpd_reject_unlisted_recipient = yes

smtpd_reject_unlisted_sender = yes

smtpd_sasl_path = private/dovecot-auth

smtpd_sasl_type = dovecot

smtpd_sender_restrictions = reject_unknown_sender_domain reject_non_fqdn_sender reject_unlisted_sender permit_mynetworks permit_sasl_authenticated check_

sender_access pcre:/etc/postfix/sender_access.pcre

smtpd_tls_CAfile = /etc/pki/tls/certs/iRedMail.crt

smtpd_tls_cert_file = /etc/pki/tls/certs/iRedMail.crt

smtpd_tls_dh1024_param_file = /etc/pki/tls/dh2048_param.pem

smtpd_tls_dh512_param_file = /etc/pki/tls/dh512_param.pem

smtpd_tls_exclude_ciphers = aNULL, eNULL, EXPORT, DES, RC4, MD5, PSK, aECDH, EDH-DSS-DES-CBC3-SHA, EDH-RSA-DES-CDC3-SHA, KRB5-DE5, CBC3-SHA

smtpd_tls_key_file = /etc/pki/tls/private/iRedMail.key

smtpd_tls_loglevel = 1

smtpd_tls_mandatory_protocols = !SSLv2 !SSLv3

smtpd_tls_protocols = !SSLv2 !SSLv3

swap_bangpath = no

tls_random_source = dev:/dev/urandom

unknown_local_recipient_reject_code = 550

virtual_alias_domains =

virtual_alias_maps = proxy:mysql:/etc/postfix/mysql/virtual_alias_maps.cf proxy:mysql:/etc/postfix/mysql/domain_alias_maps.cf proxy:mysql:/etc/postfix/mysql/catchall_maps.cf proxy:mysql:/etc/postfix/mysql/domain_alias_catchall_maps.cf proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_maps.cf proxy:mysql:/etc/postfix

/sql/mysql_virtual_alias_domain_maps.cf proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_domain_catchall_maps.cf

virtual_gid_maps = static:2000

virtual_mailbox_base = /var/vmail

virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql/virtual_mailbox_domains.cf proxy:mysql:/etc/postfix/sql/mysql_virtual_domains_maps.cf

virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql/virtual_mailbox_maps.cf proxy:mysql:/etc/postfix/sql/mysql_virtual_mailbox_maps.cf proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_domain_mailbox_maps.cf

virtual_minimum_uid = 2000

virtual_transport = virtual

virtual_uid_maps = static:2000
 

 

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