可以拉到最後看常用功能總結
先看看原引數

[email protected]:~# rdesktop rdesktop: A Remote Desktop Protocol
client. Version 1.8.2. Copyright (C) 1999-2011 Matthew Chapman et al.
See http://www.rdesktop.org/ for more information.

Usage: rdesktop [options] server[:port] -u: user name -d: domain
-s: shell / seamless application to start remotly -c: working directory -p: password (- to prompt) -n: client hostname -k:
keyboard layout on server (en-us, de, sv, etc.) -g: desktop
geometry (WxH) -i: enables smartcard authentication, password is
used as pin -f: full-screen mode -b: force bitmap updates -L:
local codepage -A: path to SeamlessRDP shell, this enables
SeamlessRDP mode -B: use BackingStore of X-server (if available)
-e: disable encryption (French TS) -E: disable encryption from client to server -m: do not send motion events -C: use private
colour map -D: hide window manager decorations -K: keep window
manager key bindings -S: caption button size (single application
mode) -T: window title -t: disable use of remote ctrl -N:
enable numlock syncronization -X: embed into another window with a
given id. -a: connection colour depth -z: enable rdp compression
-x: RDP5 experience (m[odem 28.8], b[roadband], l[an] or hex nr.) -P: use persistent bitmap caching -r: enable specified device redirection (this flag can be repeated)
‘-r comport:COM1=/dev/ttyS0’: enable serial redirection of /dev/ttyS0 to COM1
or COM1=/dev/ttyS0,COM2=/dev/ttyS1
‘-r disk:floppy=/mnt/floppy’: enable redirection of /mnt/floppy to ‘floppy’ share
or ‘floppy=/mnt/floppy,cdrom=/mnt/cdrom’
‘-r clientname=’: Set the client name displayed
for redirected disks
‘-r lptport:LPT1=/dev/lp0’: enable parallel redirection of /dev/lp0 to LPT1
or LPT1=/dev/lp0,LPT2=/dev/lp1
‘-r printer:mydeskjet’: enable printer redirection
or mydeskjet=”HP LaserJet IIIP” to enter server driver as well
‘-r sound:[local[:driver[:device]]|off|remote]’: enable sound redirection
remote would leave sound on server
available drivers for ‘local’:
alsa: ALSA output driver, default device: default
‘-r clipboard:[off|PRIMARYCLIPBOARD|CLIPBOARD]’: enable clipboard
redirection.
‘PRIMARYCLIPBOARD’ looks at both PRIMARY and CLIPBOARD
when sending data to server.
‘CLIPBOARD’ looks at only CLIPBOARD.
‘-r scard[:”Scard Name”=”Alias Name[;Vendor Name]”[,…]]
example: -r scard:”eToken PRO 00 00”=”AKS ifdh 0”
“eToken PRO 00 00” -> Device in Linux/Unix enviroment
“AKS ifdh 0” -> Device shown in Windows enviroment
example: -r scard:”eToken PRO 00 00”=”AKS ifdh 0;AKS”
“eToken PRO 00 00” -> Device in Linux/Unix enviroment
“AKS ifdh 0” -> Device shown in Windows enviroment
“AKS” -> Device vendor name -0: attach to console -4: use RDP version 4 -5: use RDP version 5 (default) -o: name=value: Adds an additional option to rdesktop.
sc-csp-name Specifies the Crypto Service Provider name which
is used to authenticate the user by smartcard
sc-container-name Specifies the container name, this is usally the username
sc-reader-name Smartcard reader name to use
sc-card-name Specifies the card name of the smartcard to use

解釋（翻譯）：

[email protected]:~# rdesktop rdesktop: A Remote Desktop Protocol
client. Version 1.8.2. Copyright (C) 1999-2011 Matthew Chapman et al.
See http://www.rdesktop.org/ for more information.

Usage: rdesktop [options] server[:port] -u: user name
-d: 域
-s: shell命令 (登入執行命令之後就退出)
-c: 工作目錄（應該是-s的子命令），-s shell命令的一個引數
-p: password (- to prompt)
-n: 客戶端（本地）主機名，預設為本地主機名
-k: 伺服器上的鍵盤佈局選擇 (en-us, de, sv, etc.)
-g: 桌面解析度（寬x高）
-i: enables smartcard authentication, password is used as pin
-f: 全屏模式（Ctrl + Alt + Enter 退出全屏模式）
-b: 強制點陣圖重新整理（沒發現什麼用）
-L: 本地編碼
-A: 無縫虛擬應用程式到本地
-B: use BackingStore of X-server (if available)
-e: disable encryption (French TS) 禁用加密
-E: disable encryption from client to server 從客戶端到伺服器，禁用加密。
-m: 不允許拖動（不傳遞滑鼠的拖動事件）
-C: use private colour map
-D: 不顯示視窗標題欄（只有遠端桌面視窗，沒有關閉和最小化按鈕）
-K: 視窗切換快捷熱鍵（Alt+Tab）不傳遞到遠端桌面
-S: 標題按鈕的大小，個人覺得這個引數很無用，或者我還沒弄明白到底什麼意思。
-T: 視窗標題
-t: disable use of remote ctrl
-N: 數字鍵盤同步
-X: 給定另一個視窗的標識，嵌入到另一個視窗
-a: connection colour depth 選擇顏色深度
-z: 啟用rdp壓縮
-x: RDP5 experience (m[odem 28.8], b[roadband], l[an] or hex nr.)
-P: 持久點陣圖快取
-r: 裝置重定向（引數可以重複使用）注：如windows下的mstsc開啟序列口、本地磁碟、印表機等
‘-r comport:COM1=/dev/ttyS0’: enable serial redirection of /dev/ttyS0 to COM1 把Linux上的ttyS0對映到遠端windows的COM1口
or COM1=/dev/ttyS0,COM2=/dev/ttyS1
‘-r disk:floppy=/mnt/floppy’: enable redirection of /mnt/floppy to ‘floppy’ share
or ‘floppy=/mnt/floppy,cdrom=/mnt/cdrom’ 把本地的/mnt/floppy資料夾掛載到遠端連線的floppy,/mnt/cdrom資料夾掛在到遠端桌面的cdrom
‘-r clientname=’ 設定本地裝置的客戶端名稱
for redirected disks
‘-r lptport:LPT1=/dev/lp0’: enable parallel redirection of /dev/lp0 to LPT1
or LPT1=/dev/lp0,LPT2=/dev/lp1
‘-r printer:mydeskjet’: enable printer redirection
or mydeskjet=”HP LaserJet IIIP” to enter server driver as well
‘-r sound：[local[:driver[:device]]|off|remote]’: 遠端計算機的聲音帶到本地
available drivers for ‘local’:
alsa: ALSA output driver, default device: default
‘-r clipboard:[off|PRIMARYCLIPBOARD|CLIPBOARD]’: 剪貼簿的配置
redirection.
‘PRIMARYCLIPBOARD’ 在本地和遠端桌面共享剪貼簿
when sending data to server.
‘CLIPBOARD’ looks at only CLIPBOARD.
以下的不是很常用
‘-r scard[:”Scard Name”=”Alias Name[;Vendor Name]”[,…]]
example: -r scard:”eToken PRO 00 00”=”AKS ifdh 0”
“eToken PRO 00 00” -> Device in Linux/Unix enviroment
“AKS ifdh 0” -> Device shown in Windows enviroment
example: -r scard:”eToken PRO 00 00”=”AKS ifdh 0;AKS”
“eToken PRO 00 00” -> Device in Linux/Unix enviroment
“AKS ifdh 0” -> Device shown in Windows enviroment
“AKS” -> Device vendor name
-0: attach to console 連線到控制檯
-4: use RDP version 4 使用RDP 4的版本
-5: use RDP version 5 (default) 預設使用RDP 5的版本
-o: name=value: Adds an additional option to rdesktop.
sc-csp-name Specifies the Crypto Service Provider name which
is used to authenticate the user by smartcard
sc-container-name Specifies the container name, this is usally the username
sc-reader-name Smartcard reader name to use
sc-card-name Specifies the card name of the smartcard to use

常用功能小結及部分引數用法舉例：

-g: 桌面解析度（寬x高）
-f: 全屏模式（Ctrl + Alt + Enter 退出全屏模式）
-D: 不顯示視窗標題欄（只有遠端桌面視窗，沒有關閉和最小化按鈕）
-T: 視窗標題
-r: 裝置重定向
-A: 無縫虛擬應用程式到本地

用法例項：
桌面解析度（1024x768）

root@wangsansan:~# rdesktop 192.168.1.3 -g 1024x768

遠端掛在本地資料夾（本地/home和/root資料夾掛在到遠端伺服器上分別命名為h和r）

root@wangsansan
 
:~# redsktop 192.168.1.3 -r disk:h=/home，r=/root

共享剪貼簿

root@wangsansan:~# redsktop 192.168.1.3 -r clipboard:PRIMARYCLIPBOARD

關於“-A: 無縫虛擬應用程式到本地”這個引數的用法，可以參考這個連結，這個功能很有趣。
各種虛擬機器的無縫虛擬模式-seamless

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