Linux服务器用户登录邮件告警

概述1，首先安装mailx工具用于发送邮件 yum -y install mailx 2，配置 mailx vim /etc/mail.rc #This is the configuration file for Heirloom mailx (formerly #known under the name "nail". #See mailx(1) for further options. #This 1，首先安装mailx工具用于发送邮件
yum -y install mailx

2，配置 mailx
vim /etc/mail.rc

#This is the configuration file for Heirloom mailx (formerly
#kNown under the name "nail".
#See mailx(1) for further options.
#This file is not overwritten when ‘make install‘ is run in
#the mailx build process again.

#SccsID @(#)nail.rc 2.11 (gritter) 8/2/08

#Do not forward to mBox by default since this is likely to be
#irritating for most users today.
set hold

#Append rather than prepend when writing to mBox automatically.
#This has no effect unless ‘hold‘ is unset again.
set append

#Ask for a message subject.
set ask

#Assume a CRT-like terminal and invoke a pager.
set crt

#Messages may be terminated by a dot.
set dot

#Do not remove empty mail folders in the spool directory.
#This may be relevant for privacy since other users Could
#otherwise create them with different permissions.
set keep

#Do not remove empty private mail folders.
set emptyBox

#Quote the original message in replIEs by "> " as usual on the Internet.
set indentprefix="> "

#automatically quote the text of the message that is responded to.
set quote

#Outgoing messages are sent in ISO-8859-1 if all their characters are
#representable in it,otherwise in UTF-8.
set sendcharsets=iso-8859-1,utf-8

#display sender‘s real names in header summarIEs.
set showname

#display the recipIEnts of messages sent by the user himself in
#header summarIEs.
set showto

#automatically check for new messages at each prompt,but avoID polling
#of IMAP servers or maildir folders.
set newmail=nopoll

#If threaded mode is activated,automatically collapse thread.
set autocollapse

#Mark messages that have been answered.
set markanswered

#HIDe some header fIElds which are uninteresting for most human readers.
ignore received in-reply-to message-ID references
ignore mime-version content-transfer-encoding

#Only include selected header fIElds when forwarding messages.
fwdretain subject date from to

#For linux and BSD,this should be set.
set bsdcompat

set [email protected]
set smtp="smtps://smtp.163.com:465"
set [email protected]
set smtp-auth-password=qincexxx
set smtp-auth=login
set nss-config-dir=/etc/pki/nssdb/mail/

3，测试mailx工具是否可以正常发送邮件
echo "test 123456"|mail -v -s "Title" [email protected]

4，写入用户家目录下的环境变量文件中，这里测试的root用户
vim /root/.bashrc

if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
echo "$(whoami) login at: $(date) ip address: $(w|sed -n ‘3p‘|awk ‘{print$3}‘)" | mail -s root [email protected]

5，使配置配置文件生效并退出shell终端进行测试
source /root/.bashrc

6，重新登录测试

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