USB 溫度計 + Linux

http://www.infiniteloop.co.jp/blog/2012/10/linuxthermometer/

USB 溫度計

clinet snmp install

CentOS

yum -y install net-snmp
#install tools
#yum -y install net-snmp-utils

# setup secret
echo 'rocommunity  XXXXXX' >> /etc/snmp/snmpd.conf
# setup snmp proxy
# squid sample
# proxy -v 1 -c public 127.0.0.1:3401 .1.3.6.1.4.1.3495

chkconfig snmpd on
service snmpd start



Ubuntu Server


apt-get install snmpd
#mv /etc/snmp/snmpd.conf snmpd.conf.old
#vim /etc/snmp/snmpd.conf
#rocommunity  XXXXXX  "ip address" (from monitor)
echo 'rocommunity  XXXXXX "ip address" (from monitor) ' >> /etc/snmp/snmpd.conf
sudo /etc/init.d/snmpd restart

Cacti install note

0.
yum install -y httpd php php-mysql php-snmp php-xml mysql mysql-server cairo-devel libxml2-devel pango-devel pango libpng-devel freetype freetype-devel libart_lgpl-devel net-snmp-utils gcc wget man make perl-CPAN perl-ExtUtils-MakeMaker perl-ExtUtils-MakeMaker-Coverage crontabs xorg-x11-fonts-100dpi xorg-x11-fonts-Type1 xorg-x11-fonts-75dpi ntp php-gd rrdtool

1.


fc-cache -vfs
mysqladmin --user=root password mypassword
mysqladmin --user=root --password reload

# Install and Configure Cacti
mkdir -p /var/www/html/cacti
cd /var/www/html/
wget http://www.cacti.net/downloads/cacti-0.8.8a.tar.gz
tar zxvf cacti-0.8.8a.tar.gz
mv cacti-0.8.8a cacti
cd cacti
cd /var/www/html/cacti/cacti-0.8.8a

2.
service mysqld start
chkconfig mysqld on

#import Cacti SQL
mysqladmin -u root -p  mypassword create cacti
mysql -u root -pmypassword cacti < cacti.sql
mysql -u root -pmypassword

# MySQL command
mysql> GRANT ALL ON cacti.* TO admin@localhost IDENTIFIED BY 'adminpassword';
mysql> flush privileges;

3.

更改config.php成我們MySQL的username, password與url path,如下：

vi include/config.php

$database_username = "admin";

$database_password = "adminpassword";

$url_path = "/cacti/";

4.

更改目錄權限

chown -R apache:apache /var/www/html/cacti

chown -R admin /var/www/html/cacti/rra/ /var/www/html/cacti/log/

5.

crontab -e

*/5 * * * * php /var/www/html/cacti/poller.php > /dev/null 2>&1

service crond restart

service httpd start
chkconfig httpd on

CentOS 6.2同一張網卡綁兩個IP

cp /etc/sysconfig/network-scripts/ifcfg-em1 /etc/sysconfig/network-scripts/ifcfg-em1:1

vi /etc/sysconfig/network-scripts/ifcfg-em1:1

DEVICE="em1:1"
HWADDR="D4:AE:52:B8:5D:95"
NM_CONTROLLED="no"
ONBOOT="yes"
IPADDR="第二個IP"
NETMASK="255.255.255.0"
GATEWAY="192.168.0.1"
BOOTPROTO="static"
IPV6INIT="no"

ifup ifcfg-em1:1

如發生斷線
用新增的IP連入後啟動原先IP

ifcfg-em1

Centos + httpd

yum -y install httpd

iptables -I INPUT -m state --state NEW -p tcp --dport 80 -j ACCEPT
iptables -I INPUT -m state --state NEW -p tcp --dport 443 -j ACCEPT

service iptables save

vi /etc/httpd/conf/httpd.conf

/ Listen 

add

--

Listen *:443

--

netstat -tlunp | grep httpd


關於SSL部分設定參閱

http://www.twisu.com.tw/5/linset/www1.htm
http://docdb.fnal.gov/doc/sslconf.html
http://www.twbsd.org/cht/book/ch14.htm
http://www.apache-ssl.org/httpd.conf.example

Linux 變更 Hostname

uname -a （VIEW HOSTNAME now）

hostname newname

vi /etc/sysconfig/network
 HOSTNAME=newname

vi etc/hosts
127.0.0.1 localhost newname

uname -a （VIEW HOSTNAME now）

Spamassassin

vi /etc/mail/spamassassin/local.cf

# These values can be overridden by editing ~/.spamassassin/user_prefs.cf
# (see spamassassin(1) for details)

# These should be safe assumptions and allow for simple visual sifting
# without risking lost emails.

required_hits 5
report_safe 0
rewrite_header Subject [SPAM]

whitelist_from *@watchdata.com
whitelist_from *@watchdata.com.cn

#whitelist_from *@gmail.com

header LOCAL_RCVD From =~ /(119.255.1.60|watchdata|.watchdata\.com.cn)/(mail.domain.com|ip address)/
describe LOCAL_RCVD Received from local machine
score LOCAL_RCVD -1000


service spamassassin restart
service postfix restart

traceroute (centos)

yum -y install  traceroute

~

traceroute 192.168.0.1 traceroute to 192.168.0.1 (192.168.0.1), 30 hops max, 60 byte packets 1 router.corp.*.* (192.168.0.1) 0.673 ms 0.697 ms 0.785 ms

CP 覆蓋不提示

\cp aaa /opt/aaa

CP 排除特定檔案

find . ! -name "a.dat" ! -name "rem.txt" -name "*.dat" |xargs -i cp {} DEST

find 來源目標 ! -name "檔案名稱.ABC" ! -name "檔名B.txt" -name "*.AVI" |xargs -i cp {} 目的地位置

grep / find

cat filename | grep keyword | grep keyword_2


find / | grep filename

Client host [209.85.214.172] blocked using bl.spamcop.net; Blocked

vi /etc/postfix/main.cf:

/

reject_rbl_client

remove list

Samba : Server requested LANMAN password (share-level security) but 'client lanman auth' is disabled

if

Server requested LANMAN password (share-level security) but 'client lanman auth' is disabled
 tree connect failed

vi  /etc/samba/smb.conf

 [global]

client lanman auth = yes

LDAP start WARNING

[root@dogcage var]# service ldap start
/var/lib/ldap/ou.bdb is not owned by "ldap"                [WARNING]
/var/lib/ldap/__db.006 is not owned by "ldap"              [WARNING]
/var/lib/ldap/log.0000000001 is not owned by "ldap"        [WARNING]
/var/lib/ldap/__db.003 is not owned by "ldap"              [WARNING]
/var/lib/ldap/objectClass.bdb is not owned by "ldap"       [WARNING]
/var/lib/ldap/__db.002 is not owned by "ldap"              [WARNING]
/var/lib/ldap/__db.001 is not owned by "ldap"              [WARNING]
/var/lib/ldap/alock is not owned by "ldap"                 [WARNING]
/var/lib/ldap/__db.005 is not owned by "ldap"              [WARNING]
/var/lib/ldap/__db.004 is not owned by "ldap"              [WARNING]
/var/lib/ldap/dn2id.bdb is not owned by "ldap"             [WARNING]
/var/lib/ldap/id2entry.bdb is not owned by "ldap"          [WARNING]
Checking configuration files for slapd:                    [FAILED]
bdb_db_open: database "dc=ikala,dc=tv": alock package is unstable.
backend_startup_one: bi_db_open failed! (-1)
slap_startup failed (test would succeed using the -u switch)
stale lock files may be present in /var/lib/ldap           [WARNING]
[root@dogcage var]# service ldap status
slapd is stopped

chown ldap:ldap -R /var/lib/ldap/

[root@dogcage var]# service ldap restart

Stopping slapd:                                            [FAILED]

Checking configuration files for slapd:                    [WARNING]

bdb_db_open: database "dc=ikala,dc=tv": unclean shutdown detected; attempting recovery.

bdb_db_open: database "dc=ikala,dc=tv": recovery skipped in read-only mode. Run manual recovery if errors are encountered.

config file testing succeeded

Starting slapd:                                            [  OK  ]

[root@dogcage var]# service ldap status

slapd (pid 9048) is running...

[root@dogcage var]#

Linux add user userdel

useradd -s /sbin/nologin username
passwd username


userdel -r  username
find / -user username

https://sites.google.com/site/hcsvieken/fedora-xue-xi/usermod

Centos 5.5 install MySQL

Centos 5.5 install MySQL

 yum -y install mysql-server

vi /etc/my.cnf
--

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
default-character-set = utf8

[mysql.server]
user=mysql
basedir=/var/lib

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

[mysql]
default-character-set = utf8

--

chkconfig mysqld on

chkconfig --list mysqld

2-5 開啟

/etc/rc.d/init.d/mysqld start
--

正在初始化 MySQL 資料庫: Neither host 'ip位置' nor 'localhost' could be looked up with
/usr/bin/resolveip
Please configure the 'hostname' command to return a correct hostname.
If you want to solve this at a later stage, restart this script with
the --force option
--


 vi /etc/hosts

--
# Do not remove the following line, or various programs
# that require network functionality will fail.
#::1 localhost.localdomain localhost
127.0.0.1 localhost.localdomain localhost


--

/etc/rc.d/init.d/mysqld start

mysqladmin -u root password 'Your Password'

rename

rename ooxxooxx.ooxx oo.ooxx *

aba.xxx rename as aba

rename aba.xxx " " *


find . -name '*,v' -exec sh -c 'mv "$0" "${0%,v}"' {} \;

cvs2git import

cat ../mnt/HDD/專案名稱/專案名稱-blob.dat ../mnt/HDD/專案名稱/專案名稱-dump.dat | git fast-import

cvs2git

這是在本地端的方法
需事先安裝cvs2git




cvs2git \
    --blobfile=user/user-blob.dat \
    --dumpfile=user/user-dump.dat \
    --username=cvs2git \
/mnt/HDD/jspspace/user/ --fallback-encoding=big5


--



cvs2git \
    --blobfile=原專案名稱/原專案名稱-blob.dat \
    --dumpfile=原專案名稱/原專案名稱-dump.dat \
    --username=cvs2git \
/mnt/HDD/原專案名稱/

centos load ntfs

yum install fuse fuse-ntfs-3g