开始hadoop前的准备:ubuntu学习笔记-基本环境的搭建(ssh的安装,SecureCRT连接,vim的安装及使用、jdk的安装)
2012-06-04 13:37
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简介
ubuntu版本:ubuntu-12.04-server-i386.iso本文章的内容主要抱括:ssh的安装,SecureCRT连接,vim的安装及使用、jdk的安装
安装SSH
安装命令如下,安装过程过于简单就不用说了。sudo apt-get install openssh-server
查看是否安装成功:
ps -e |grep ssh
1329 ? 00:00:00 sshd |
查看IP:ifconfig
naxsu@ubuntu:~$ ifconfig eth0 Link encap:Ethernet HWaddr 00:0c:29:e0:32:e5 inet addr:192.168.26.128 Bcast:192.168.26.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fee0:32e5/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:53 errors:0 dropped:0 overruns:0 frame:0 TX packets:55 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:5999 (5.9 KB) TX bytes:7364 (7.3 KB) Interrupt:19 Base address:0x2000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) |
安装jdk
下载wget http://download.oracle.com/otn-pub/java/jdk/6u31-b04/jdk-6u31-linux-i586.bin
把jdk移到/usr/local/目录下
naxsu@ubuntu:~$ sudo mv jdk-6u31-linux-i586.bin /usr/local/
[sudo] password for naxsu:
安装
naxsu@ubuntu:/usr/local$ ./jdk-6u31-linux-i586.bin
-bash: ./jdk-6u31-linux-i586.bin: Permission denied
提示没权限
方法一:在前面加上sudo sh
root@ubuntu:/usr/java#sudo sh ./ jdk-6u31-linux-i586.bin
方法二:加权限
root@ubuntu:/usr/java# sudo chmod u+x jdk-6u31-linux-i586.bin
root@ubuntu:/usr/java# ./ jdk-6u31-linux-i586.bin
naxsu@ubuntu:/usr/local$ sudo chmod u+x jdk-6u31-linux-i586.bin
naxsu@ubuntu:/usr/local$ sudo ./jdk-6u31-linux-i586.bin
出问题了,如下:
naxsu@ubuntu:/usr/local$ sudo ./jdk-6u31-linux-i586.bin ./jdk-6u31-linux-i586.bin: 1: ./jdk-6u31-linux-i586.bin: cannot open html: No such file ./jdk-6u31-linux-i586.bin: 2: ./jdk-6u31-linux-i586.bin: cannot open head: No such file ./jdk-6u31-linux-i586.bin: 3: ./jdk-6u31-linux-i586.bin: cannot open title: No such file ./jdk-6u31-linux-i586.bin: 3: ./jdk-6u31-linux-i586.bin: Request: not found ./jdk-6u31-linux-i586.bin: 4: ./jdk-6u31-linux-i586.bin: cannot open META: No such file ./jdk-6u31-linux-i586.bin: 5: ./jdk-6u31-linux-i586.bin: cannot open link: No such file ./jdk-6u31-linux-i586.bin: 6: ./jdk-6u31-linux-i586.bin: cannot open link: No such file : not foundlinux-i586.bin: 7: ./jdk-6u31-linux-i586.bin: ./jdk-6u31-linux-i586.bin: 8: ./jdk-6u31-linux-i586.bin: cannot open body: No such file ./jdk-6u31-linux-i586.bin: 9: ./jdk-6u31-linux-i586.bin: cannot open div: No such file ./jdk-6u31-linux-i586.bin: 10: ./jdk-6u31-linux-i586.bin: cannot open table: No such file ./jdk-6u31-linux-i586.bin: 11: ./jdk-6u31-linux-i586.bin: cannot open tr: No such file ./jdk-6u31-linux-i586.bin: 12: ./jdk-6u31-linux-i586.bin: Syntax error: redirection unexpected |
只能到官网下载JDK了
用VMware Workstation虚拟机来识别USB设备(如U盘)的方法
首先,要使VM虚拟机能够识别USB设备,也就像Windows中的找到新硬件提示一样,打开虚拟机,运行后,插入USB设备(该设备已被Windows识别),然后按照图示方式选择Removable Devices,选择USB Device,然后在VM的右下角会出现USB设备图标,证明已经被VM识别出来了。
其次,因为在Linux系统中要读取U盘设备,必须通过文件挂载的方式来访问,即把USB设备也当成文件来访问,要挂载设备,首先要知道其设备名,然后在利用挂载命令挂载,可以用fdisk –l或者dmesg命令获得USB设备的设备名假设为sdb1,然后新建一个文件夹目录比如mkdir myusb ,再利用mount –t –vfat 设备名 挂载目录命令挂载,这里可使用mount –t –vfat sdb1 myusb,然后就可以通过myusb目录访问USB设备上的内容。
最后,使用完毕之后要卸载USB,可以使用unmount挂载目录,或者unmount 设备名,即可使用unmount myusb或者unmount sdb1来卸载。
naxsu@ubuntu:/mnt$ sudo fdisk -l [sudo] password for naxsu: Disk /dev/sda: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders, total 41943040 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00063e01 Device Boot Start End Blocks Id System /dev/sda1 * 2048 40894463 20446208 83 Linux /dev/sda2 40896510 41940991 522241 5 Extended /dev/sda5 40896512 41940991 522240 82 Linux swap / Solaris Disk /dev/sdb: 4011 MB, 4011851776 bytes 255 heads, 63 sectors/track, 487 cylinders, total 7835648 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00328b06 Device Boot Start End Blocks Id System /dev/sdb1 * 63 7835647 3917792+ c W95 FAT32 (LBA) |
naxsu@ubuntu:~$ sudo mount /dev/sdb1 /mnt/myusb naxsu@ubuntu:~$ ls naxsu@ubuntu:~$ cd /mnt/myusb/ naxsu@ubuntu:/mnt/myusb$ sudo cp jdk-6u24-linux-i586.bin /usr/local/ naxsu@ubuntu:/usr/local$ sudo chmod u+x jdk-6u24-linux-i586.bin naxsu@ubuntu:/usr/local$ sudo ./jdk-6u24-linux-i586.bin ……… Press Enter to continue..... Done. |
用vim编辑,没有就安装
naxsu@ubuntu:/usr/local/jdk1.6.0_24$ vim /etc/profile The program 'vim' can be found in the following packages: * vim * vim-gnome * vim-tiny * vim-athena * vim-gtk * vim-nox Try: sudo apt-get install <selected package> naxsu@ubuntu:/usr/local/jdk1.6.0_24$ sudo apt-get install vim naxsu@ubuntu:/usr/local$ sudo vim /etc/profile 加入以下代码: #set java environment export JAVA_HOME= /usr/local/jdk1.6.0_24 export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH:$HOMR/bin 下面才有效 export JAVA_HOME=/usr/local/jdk1.6.0_24 export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar export PATH=$JAVA_HOME/bin:$PATH |
naxsu@ubuntu:/usr/local$
sudo -s
root@ubuntu:/usr/local#
修改root用户密码
在终端执行 sudo passwd root 指令后,系统将会提示你设置一个新的 root 帐号密码
如果要禁用 root 帐号,那么可以执行 sudo passwd -l root
/etc/profile的设置对su root无效
那如何将/etc/profile的设置在su root也能生效呢? naxsu@ubuntu:~$ su - root Password: “-”不能省略,它是–login的编写。 |
让当前配置立即生效 root@ubuntu:~# source /etc/profile 测试安装是否成功 root@ubuntu:~# echo $JAVA_HOME /usr/local/jdk1.6.0_24 root@ubuntu:~# echo $PATH /usr/local/jdk1.6.0_24/bin:/bin:/jre/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/bin root@ubuntu:~# echo $CLASSPATH .:/usr/local/jdk1.6.0_24/lib/dt.jar:/usr/local/jdk1.6.0_24/lib/tools.jar root@ubuntu:~# java -version java version "1.6.0_24" Java(TM) SE Runtime Environment (build 1.6.0_24-b07) Java HotSpot(TM) Client VM (build 19.1-b02, mixed mode, sharing) root@ubuntu:~# 以上提示说明安装成功。 |
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