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1：安装JDK 下载好jdk-7u45-Linux-x64.gz 或从其它电脑copy过去 [it@feng01 ~]$scp -r ./jdk-7u45-linux-x64.gz it@it.net.cn:/home/it The authenticity of host 'it.net.cn (10.3.7.214)' can't be established. RSA key fingerprint is a8:9d:34:63:fa:c2:47:4f:81:10:94:fa:4b:ba:08:55. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'it.net.cn,10.3.7.214' (RSA) to the list of known hosts. it@it.net.cn's password: jdk-7u45-linux-x64.gz 100% 132MB 32.9MB/s 00:04 2:解压并配置java 环境 解压:tar vzxf jdk-7u45-linux-x64.gz 然后在/home/it/.bash_profile文件末加上以下语句： export JAVA_HOME=$HOME/jdk1.7.0_45 export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar 接着使文件生效：source /home/it/.bash_profile 最后，验证是否安装成功： Java -version [it@it.net.cn ~]$ source /home/it/.bash_profile [it@it.net.cn ~]$ java -version java version "1.7.0_45" Java(TM) SE Runtime Environment (build 1.7.0_45-b18) Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode) [it@it.net.cn ~]$ 3:ssh免登陆 [it@it.net.cn ~]$ ssh-keygen -t -rsa unknown key type -rsa [it@it.net.cn ~]$ ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/home/it/.ssh/id_rsa): /home/it/.ssh/id_rsa already exists. 存在文件要覆盖 Overwrite (y/n)? y Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/it/.ssh/id_rsa. Your public key has been saved in /home/it/.ssh/id_rsa.pub. The key fingerprint is: b0:f3:f7:6f:80:98:09:48:52:03:2e:a5:d3:e6:b1:a8 it@it.net.cn 查看生成的文件 [it@it.net.cn ~]$ cd .ssh [it@it.net.cn .ssh]$ ls authorized_keys id_rsa id_rsa.pub [it@it.net.cn .ssh]$ ls -l 总计 12 -rw-r--r-- 1 it it 397 07-22 15:40 authorized_keys -rw------- 1 it it 1675 07-23 22:56 id_rsa -rw-r--r-- 1 it it 397 07-23 22:56 id_rsa.pub 另外一台电脑也这样操作 [it@it02 ~]$ ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/home/it/.ssh/id_rsa): /home/it/.ssh/id_rsa already exists. Overwrite (y/n)? y Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/it/.ssh/id_rsa. Your public key has been saved in /home/it/.ssh/id_rsa.pub. The key fingerprint is: 74:bb:ff:af:9d:f3:4e:2e:18:6b:91:45:ff:ac:37:85 it@it02 The key's randomart image is: +--[ RSA 2048]----+ | | | . | | . . . . | | . . . . .| | S . o o.| | .+ E +| | . = .o| | .+ o*o| | ...oBX| +-----------------+ 复制文件到it02 [it@it.net.cn .ssh]$ scp ./id_rsa.pub it@it02:/home/it/.ssh/authorized_keys The authenticity of host 'it02 (10.3.7.212)' can't be established. RSA key fingerprint is 5f:20:1a:77:96:99:4a:f2:5d:a1:1d:68:b6:91:5a:e7. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'it02,10.3.7.212' (RSA) to the list of known hosts. it@it02's password: id_rsa.pub 100% 397 0.4KB/s 00:00 [it@it.net.cn .ssh]$ 测试成功 [it@it.net.cn .ssh]$ ssh it02 Last login: Wed Jul 23 22:22:27 2014 from 10.254.254.8 [it@it02 ~]$ (责任编辑：IT) |