My Source Code

[sean@station62 tmp]$ ssh-keygen -t dsa
Generating public/private dsa key pair.
Enter file in which to save the key (/home/sean/.ssh/id_dsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/sean/.ssh/id_dsa.
Your public key has been saved in /home/sean/.ssh/id_dsa.pub.
The key fingerprint is:
8f:f7:6c:91:cd:a6:d7:27:3a:a6:1b:0d:2f:e8:b9:e8 sean@station62.example.com
The key's randomart image is:
+--[ DSA 1024]----+
|                 |
|                 |
|                 |
|                 |
|        S .  +   |
|         + +o +  |
|        o = o+ . |
|       o o == o o|
|     .E +.o=++ ..|
+-----------------+

使用window ssh linux主機
PuTTY 是個小巧方便的 Telnet/SSH 安全遠端連線程式
但用於非英語系文字時有非常多的問題
而且它對於初學者來說過於複雜的使用界面也為人詬病已久。
PieTTY 則是源自於 PuTTY ，修正與完整支援亞洲等多國語系字元、
並在使用界面上大幅改進、易學易用的版本。

scp - secure copy (remote file copy program)
使用ssh的方法傳送資料至遠端主機
上傳
scp 檔案 目的地

SSH 連線服務
SSH 全名為 Secure Shell 提供加密式登入存取服務
telnet ptt.cc
ssh bbs@ptt.cc

1） 查詢所有己安裝套件



rpm -qa | cat -n grep 'string'

Linux 系統目錄採行樹狀目錄結構與標準
FHS (Filesystem Hierarchy Standard)
http://www.pathname.com/fhs/pub/fhs-2.3.html
LSB (Linux Standard Base)
http://www.linuxbase.org/

class A
IP: 10.0.0.0 ~ 10.255.255.255
Subnet mask:255.0.0.0
class B

STATIC IP的方法
[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0



DEVICE="eth0"
BOOTPROTO=none 或是 static
IPV6INIT="yes"
NM_CONTROLLED="yes"
ONBOOT="yes"
HWADDR=00:26:2D:1F:ED:74
TYPE=Ethernet
IPADDR=192.168.123.62
PREFIX=24
GATEWAY=192.168.123.254
DNS1=8.8.8.8
DNS2=8.8.4.4
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME="System eth0"
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03 

[sean@myserv ]$ ping www.google.com
PING www.l.google.com (74.125.31.105) 56(84) bytes of data.
64 bytes from tb-in-f105.1e100.net (74.125.31.105): icmp_seq=1 ttl=48 time=21.9 ms
...
--- www.l.google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3094ms
rtt min/avg/max/mdev = 21.489/21.763/22.066/0.280 ms

Linux 網路組態設定
[sean@localhost ]$ ip a



 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 00:26:2d:1f:ed:74 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.68/24 brd 192.168.1.255 scope global eth0
    inet6 fe80::226:2dff:fe1f:ed74/64 scope link
       valid_lft forever preferred_lft forever