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centos add epel source 添加源

http://blog.csdn.net/yasi_xi/article/details/11746255

三，安装epel,centos6选6，5就选5
32位系统选择：
rpm -ivh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
rpm -ivh http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm
64位系统选择：
rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh http://dl.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm
导入key：
rpm –import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
rpm –import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-5
如果用比较新的软件，用epel-test.repo这个文件就行了
别忘了安装yum install yum-priorities

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firewall-cmd 新防火墙 CentOS 7

http://docs.diladele.com/tutorials/transparently_filtering_https_centos/firewall.html

[root@localhost firewalld]# pwd
/etc/firewalld
[root@localhost firewalld]# cat direct.xml

    -i eno33554992 -p tcp –dport 80 -j REDIRECT –to-ports 3126
    -i eno33554992 -p tcp –dport 443 -j REDIRECT –to-ports 3127

[root@localhost firewalld]#

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linux change user name uid group name

https://wiki.archlinux.org/index.php/change_username

http://www.cyberciti.biz/faq/howto-change-rename-user-name-id/

usermod -l login-name old-name

usermod -u UID username

usermod -c “New Real Name” username

Link A User’s former $HOME to new $HOME

This will created a link between username’s former home directory to the new one. Doing this will allow programs to find files that have hardcoded paths.
Warning: Make sure there is no trailing / on /my/old/home

# ln -s /my/new/home/ /my/old/home

Change Group Name

If you want to change the user’s group also:

# groupmod -n newname oldname

Note: This will change a group name but not the numerical GID of the group.

For further information see the man pages for usermod and groupmod.

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batch change password username home path 批量修改密码 用户名 和家目录

for /f “tokens=1,2,3” %%i in (pwwin.txt) do (
if “%%j”==”administrator” psexec \\%%i net user administrator %%k
if “%%j”==”ubuntu” echo yes | plink -agent -l ubuntu -pw oldpass %%i echo -e ‘oldpass\n%%k\n%%k’ ^| passwd
)

echo ‘user:pass’ | chpasswd

echo -e ‘oldpass\nnewpass\nnewpass’ | passwd

echo -e ‘password\npassword’ | passwd –stdin user

for /f “tokens=1,2,3,4” %%i in (pwlin.txt) do (
echo yes | plink.exe -agent -ssh -l ubuntubj -pw pass %%j echo echo ‘root:pass’ \^| chpasswd ^> modroot.sh
echo yes | plink.exe -agent -ssh -l ubuntubj -pw pass %%j echo -e ‘pass\n’ ^| sudo -S bash ./modroot.sh
)

for /f “tokens=1,2,3,4” %%i in (pwlin.txt) do (
echo yes | plink.exe -agent -ssh -l root -pw pass %%j  usermod -l newusername oldusername
echo yes | plink.exe -agent -ssh -l root -pw pass %%j usermod -c newusername newusername
echo yes | plink.exe -agent -ssh -l root -pw pass %%j usermod -m -d /home/newusername newusername
echo yes | plink.exe -agent -ssh -l root -pw pass %%j groupmod -n newusername oldusername
)

for /f “tokens=1,2,3,4” %%i in (pwlin.txt) do (
echo yes | plink.exe -agent -ssh -l root -pw pass %%j  usermod -p ‘!’ root
)

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