有一台主机，安装了windows7，在其安装了virtualbox，然后安装了 ubuntu虚拟机。在windows7上安装SecureCRT来ssh连接ubuntu虚拟机。一般在windows上面下载软件，然后通过 vsftp上传到ubuntu虚拟机上。但是这样非常麻烦，现在考虑使用sftp协议来直接传输。

使用SecureCRT软件ssh连接到ubuntu虚拟机。然后在SecureCRT上面打开SFTP会话，如下图所示：　　

进入到sftp命令窗口以后，就可以通过sftp命令来进行文件互传的操作。下面主要介绍一下sftp命令的含义。

sftp> help
Available commands:
ascii                          Set transfer mode to ASCII
binary                         Set transfer mode to binary
cd path                        Change remote directory to 'path'
lcd path                       Change local directory to 'path' detail remote-path Display system information about remote file or folder ldetail local-path Display system information about local file or folder chgrp group path Change group of file 'path' to 'group' chmod mode path Change permissions of file 'path' to 'mode' chown owner path Change owner of file 'path' to 'owner' exit Quit sftp help Display this help text include filename Include commands from 'filename' Alternate: < filename get [-r][-a | -b] remote-path Download file -r downloads directory recursively force ascii (-a) or binary (-b) mode ln [-s] existingpath linkpath Hardlink / symlink remote file ls [options] [path] Display remote directory listing lls [options] [path] Display local directory listing mkdir path Create remote directory lmkdir path Create local directory mv oldpath newpath Move remote file lmv oldpath newpath Move local file open [user@]host[:port] Connect to remote host put [-r][-a | -b] local-path Upload file -r uploads directory recursively force ascii (-a) or binary (-b) mode pwd Display remote working directory lpwd Print local working directory quit Quit sftp rename oldname newname Rename remote file lrename oldname newname Rename local file rmdir path Remove remote directory lrmdir path Remove local directory rm path Delete remote file lrm path Delete local file su username Substitutes the current user This is only supported with VShell for Windows 3.5 or later. type [transfer-mode] Display or set file transfer mode view remote-path Download and open file version Display protocol version

sftp-- help
可用命令：
cd 路径                        更改远程目录到“路径”
lcd 路径                       更改本地目录到“路径”
chgrp group path               将文件“path”的组更改为“group”
chmod mode path                将文件“path”的权限更改为“mode”
chown owner path               将文件“path”的属主更改为“owner”
exit                           退出 sftp
help                           显示这个帮助文本
get 远程路径                   下载文件
ln existingpath linkpath       符号链接远程文件
ls [选项] [路径]               显示远程目录列表
lls [选项] [路径]              显示本地目录列表
mkdir 路径                     创建远程目录
lmkdir 路径                    创建本地目录
mv oldpath newpath             移动远程文件
open [用户@]主机[:端口]        连接到远程主机
put 本地路径                   上传文件
pwd                            显示远程工作目录
lpwd                           打印本地工作目录
quit                           退出 sftp
rmdir 路径                     移除远程目录
lrmdir 路径                    移除本地目录
rm 路径                        删除远程文件
lrm 路径                       删除本地文件
symlink existingpath linkpath  符号链接远程文件
version                        显示协议版本 

cd 路径                        更改远程目录到“路径”
lcd 路径                       更改本地目录到“路径”
ls [选项] [路径]               显示远程目录列表
lls [选项] [路径]              显示本地目录列表
put 本地路径                   上传文件
get 远程路径                   下载文件 

root@BJCGNMON01:/home# ll
total 20
drwxr-xr-x  5 root    root    4096 Apr 18 15:21 ./ drwxr-xr-x 24 root root 4096 Jan 3 14:14 ../ drwxr-xr-x 9 enadmin enadmin 4096 Apr 18 15:22 enadmin/ drwxr-xr-x 2 root root 4096 Apr 18 15:21 sftp/--可以看到sftp的权限是root的 drwxr-xr-x 2 root root 4096 Apr 18 14:57 test/ root@BJCGNMON01:/home# chown -R enadmin.enadmin sftp/ root@BJCGNMON01:/home# ll total 20 drwxr-xr-x 5 root root 4096 Apr 18 15:21 ./ drwxr-xr-x 24 root root 4096 Jan 3 14:14 ../ drwxr-xr-x 9 enadmin enadmin 4096 Apr 18 15:22 enadmin/ drwxr-xr-x 2 enadmin enadmin 4096 Apr 18 15:21 sftp/--修改以后权限变成enadmin的了 drwxr-xr-x 2 root root 4096 Apr 18 14:57 test/

sftp> put test* --初始想将文件从windows系统put到ubuntu系统，发现失败，提示拒绝访问
Uploading test1.txt to /home/test1.txt
put: failed to upload e:/sftp/test1.txt. 拒绝访问。
Uploading test2.txt to /home/test2.txt
put: failed to upload e:/sftp/test2.txt. 拒绝访问。
Uploading test3.txt to /home/test3.txt put: failed to upload e:/sftp/test3.txt. 拒绝访问。 sftp> pwd --查看当前目录是/home目录，权限是root的 /home sftp> cd /home/enadmin/ --我切换到enadmin目录下 sftp> ls Graphs.pm msmtp ntp sent smokeping.tar.gz smokepingrtt.tar.gz smokepingrtt2.tar.gz Target wqy wqy-zenhei-0.8.38-1.deb sftp> lls test1.txt test2.txt test3.txt sftp> put test* -再次尝试将windows下的文件put到/homg/enadmin目录下，这次成功 Uploading test1.txt to /home/enadmin/test1.txt 100% 4 bytes 4 bytes/s 00:00:00 e:/sftp/test1.txt: 4 bytes transferred in 0 seconds (4 bytes/s) Uploading test2.txt to /home/enadmin/test2.txt 100% 4 bytes 4 bytes/s 00:00:00 e:/sftp/test2.txt: 4 bytes transferred in 0 seconds (4 bytes/s) Uploading test3.txt to /home/enadmin/test3.txt 100% 5 bytes 5 bytes/s 00:00:00 e:/sftp/test3.txt: 5 bytes transferred in 0 seconds (5 bytes/s)  sftp> cd /home/sftp/--在修改sftp目录权限以后，再次切换到sftp目录下 sftp> ls sftp> lls test1.txt test2.txt test3.txt sftp> put test* --这回put成功。所以跟权限相关 Uploading test1.txt to /home/sftp/test1.txt 100% 4 bytes 4 bytes/s 00:00:00 e:/sftp/test1.txt: 4 bytes transferred in 0 seconds (4 bytes/s) Uploading test2.txt to /home/sftp/test2.txt 100% 4 bytes 4 bytes/s 00:00:00 e:/sftp/test2.txt: 4 bytes transferred in 0 seconds (4 bytes/s) Uploading test3.txt to /home/sftp/test3.txt 100% 5 bytes 5 bytes/s 00:00:00 e:/sftp/test3.txt: 5 bytes transferred in 0 seconds (5 bytes/s)

sftp> pwd
/home/enadmin
sftp> lpwd
e:/Documents
sftp> lcd e:/sftp --切换目录
sftp> lls rc.local test1.txt test2.txt test3.txt sftp> ls Graphs.pm msmtp ntp sent smokeping.tar.gz smokepingrtt.tar.gz smokepingrtt2.tar.gz Target test1.txt test2.txt test3.txt wqy wqy-zenhei-0.8.38-1.deb sftp> get Graphs.pm --下载文件到windows Downloading Graphs.pm from /home/enadmin/Graphs.pm 100% 13KB 13KB/s 00:00:00 /home/enadmin/Graphs.pm: 13503 bytes transferred in 0 seconds (13 KB/s) sftp> lls --查看windows目录 Graphs.pm rc.local test1.txt test2.txt test3.txt sftp>