1、拷贝本机/home/administrator/test整个目录至远程主机192.168.1.100的/root目录下
代码如下:
2、拷贝单个文件至远程主机
代码如下:
其实上传文件和文件夹区别就在参数 -r, 跟cp, rm的参数使用差不多, 文加价多个 -r
3、远程文件/文件夹下载
举例,把192.168.62.10上面的/root/文件夹,下载到本地的/home/administrator/Desktop/new/下,使用远程端的root登陆
代码如下:
rm -rf /var/log/httpd/access
将会删除/var/log/httpd/access目录以及其下所有文件、文件夹
~~~~~~~~~~~~~~~~~~~~~
把当前目录的一个子目录里的文件移动到另一个子目录里 mv 文件名/* 另一个目录 ~~~~~~~~~~~~~~~~~
Linux时间同步NTP服务的安装与配置
[日期:2016-10-12] | 来源:Linux社区 作者:dagege | [字体:大 中 小] |
当我们需要管理多台Linux服务器的时间时,一台一台的修改未免太麻烦了,NTP服务就很好的为我们解决了这个问题!
1.首先安装NTP
[root@localhost /]# yum install ntp -y
2.修改NTP配置文件,添加NTP服务器的网络位置 vi /etc/ntp.conf
# For more information about this file, see the man pages
# ntp.conf(5), ntp_acc(5), ntp_auth(5), ntp_clock(5), ntp_misc(5), ntp_mon(5). driftfile /var/lib/ntp/drift # Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.
restrict default nomodify notrap nopeer noquery # Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.1
restrict ::1 # Hosts on local network are less restricted.
#restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap # Use public servers from the pool.ntp.org project.Please consider joining the pool (http://www.pool.ntp.org/join.html).
server 192.168.1.1 iburst #目标服务器网络位置
#server 1.CentOS.pool.ntp.org iburst #一下三个是CentOS官方的NTP服务器,我们注释掉
#server 2.centos.pool.ntp.org iburst
#server 3.centos.pool.ntp.org iburst #broadcast 192.168.1.255 autokey # broadcast server
#broadcastclient # broadcast client
#broadcast 224.0.1.1 autokey # multicast server
#multicastclient 224.0.1.1 # multicast client
#manycastserver 239.255.254.254 # manycast server
#manycastclient 239.255.254.254 autokey # manycast client # Enable public key cryptography.
#crypto includefile /etc/ntp/crypto/pw # Key file containing the keys and key identifiers used when operating
# with symmetric key cryptography.
keys /etc/ntp/keys # Specify the key identifiers which are trusted.
#trustedkey 4 8 42 # Specify the key identifier to use with the ntpdc utility.
#requestkey 8 # Specify the key identifier to use with the ntpq utility.
#controlkey 8 # Enable writing of statistics records.
#statistics clockstats cryptostats loopstats peerstats # Disable the monitoring facility to prevent amplification attacks using ntpdc
# monlist command when default restrict does not include the noquery flag. See
# CVE-2013-5211 for more details.
# Note: Monitoring will not be disabled with the limited restriction flag.
disable monitor
保存退出
3.启动服务并设置开启自启
[root@localhost /]# systemctl start ntpd.service #启动服务
[root@localhost /]# systemctl enable ntpd.service #设置为开机启动
4.查看运行状态
[root@localhost /]# systemctl status ntpd.service
● ntpd.service - Network Time Service
Loaded: loaded (/usr/lib/systemd/system/ntpd.service; enabled; vendor preset: disabled)
Active: active (running) since 二 2016-10-11 13:34:11 CST; 8min ago
Main PID: 6497 (ntpd)
CGroup: /system.slice/ntpd.servicess
└─6497 /usr/sbin/ntpd -u ntp:ntp -g
10月 11 13:34:11 localhost.localdomain ntpd[6497]: Listen and drop on 1 v6wildcard :: UDP 123
10月 11 13:34:11 localhost.localdomain ntpd[6497]: Listen normally on 2 lo 127.0.0.1 UDP 123
10月 11 13:34:11 localhost.localdomain ntpd[6497]: Listen normally on 3 eno16777736 192.168.100.100 UDP 123
可以看到当前的状态为 running