开发板上启动cups的命令为
/etc/init.d/cups stop/start
或service cups restart1.1.23
有时出现cups web管理界面没有响应，需要重启服务。开发板里面的cups目前为1.2.7版本，需要研究与高版本存在的差异。
3、手动安装的cups打印机的一些命令，范例：
/usr/sbin/lpadmin -p LaserJet -E -v parallel:/dev/lp0 -m laserjet.ppd
1.添加名为LaserJet的打印机(-p)
2.启用要使用的打印机(-E)
3.设置要使用的设备和设备类型(-v)
4.使用驱动程序／PPD文件laserjet.ppd (-m)
字符下打印：
/usr/bin/lp -d LaserJet /etc/aliases
lp语法将文件/etc/aliases打印到LaserJet打印机(-d)。
临时禁用和启动打印机：
/usr/bin/disable -r "Changing Paper" LaserJet
/usr/bin/enable LaserJet
CUPS配置
注意，不同的版本界面略有差异，本文所用的软件版本为1.3.9。cups在很多Linux版本中已自带，不需要额外安装。
进入Administration，点击“Add printer”。
选择正确的驱动程序，如果所连接打印机的驱动程序不存在，则必须手工添加驱动程序(略)。
在添加打印机的最后，会提示你输入Linux的root用户名和密码。
从下图可以看到新添加的打印机，名称为test。
重要提示：
1)打开选择administration，基本管理设置中Show printers shared by other systems，Share published printers connected to this system，Allow printing from the Internet这三项选定，即许可共享本地打印机，许可其它操作系统连接和许可网络打印。见【cups提供远程打印服务的配置经验】cups1.3.3。(好像并不是必须的)
2、编辑/etc/cups/cupsd.conf在Location选项添加容许的windows网段。
3、编辑/etc/cups/mime.convs，找到如下一行(很重要，否则会显示答应错误)
#application/octet-stream application/vnd.cups-raw 0 -
将注释去掉。
4、编辑/etc/cups/mime.type,找到如下一行(好像默认并没有注释)
#application/octet-stream
同3一样，将注释去掉。
1、Windows客户端
在使用cups连接的网络打印服务前，必须停止XP的防火墙服务，或添加631的协议。否则会引起问题的。安装步骤如下：
1)在弹出的对话框中选择“添加打印机”
2)选择添加的打印机类型为“网络打印机”
3)在URL下输入地址：，其中10.2.2.3为cups打印服务器的IP地址，631为cups服务端口，ll为添加的打印机的名称。
4)如果提示URL错误，请纠正。否则点击“下一步”，然后提供Windows下的打印机驱动即可。
以上配置在cups1.3.9下测试完成，不敢保证在cups其他版本是否一定通过。
2、Linux客户端
对于已联网并且安装了CUPS的Linux客户端来讲，能够自动检测到网络中的打印机。因此，只需要找到菜单“系统——>首选项——>更多首选项——>默认打印机>”(redhat enterprise server)或“桌面——>首选项——>更多首选项——>默认打印机>”(fedora)，将弹出网络上所有已存在的打印机，选择其中的某一在线打印机作为默认打印机即可。
网上提到在客户端要打开631端口或关闭防火墙，显然是错误的。应该是在服务器端打开631端口即可，是否关闭整个防火墙，笔者认为没有必要，不过调试过程中建议disable，以免对调试进度产生不利影响。
如果Linux客户端没有安装CUPS，则需要手工去添加打印机，笔者没有做过研究，网上有一篇文章(http://blog.sina.com.cn/s/blog_5507289e010008ky.html)，有兴趣的可以参考。
也可以使用samba服务来共享打印机，这是最常规的做法，只需配置samba服务，将打印机共享即可。
security = share
########## Printing ##########
# If you want to automatically load your printer list rather
# than setting them up individually then you'll need this
#;load printers = yes
load printers = yes
# lpr(ng) printing. You may wish to override the location of the
# printcap file
;printing = bsd
;printcap name = /etc/printcap
# CUPS printing.See also the cupsaddsmb(8) manpage in the
# cupsys-client package.
printing = cups
printcap name = /etc/printcap
# When using [print$], root is implicitly a 'printer admin', but you can
# also give this right to other users to add drivers and set printer
# properties
;printer admin = @ntadmin
############ Misc ############
# Using the following line enables you to customise your configuration
# on a per machine basis. The %m gets replaced with the netbios name
# of the machine that is connecting
;include = /home/samba/etc/smb.conf.%m
# Most people will find that this option gives better performance.
# See smb.conf(5) and /usr/share/doc/samba-doc/htmldocs/speed.html
# for details
# You may want to add the following on a Linux system:
#SO_RCVBUF=8192 SO_SNDBUF=8192
socket options = TCP_NODELAY
# The following parameter is useful only if you have the linpopup package
# installed. The samba maintainer and the linpopup maintainer are
# working to ease installation and configuration of linpopup and samba.
;message command = /bin/sh -c '/usr/bin/linpopup "%f" "%m" %s; rm %s' &
# Domain Master specifies Samba to be the Domain Master Browser. If this
# machine will be configured as a BDC (a secondary logon server), you
# must set this to 'no'; otherwise, the default behavior is recommended.
;domain master = auto
# Some defaults for winbind (make sure you're not using the ranges
# for something else.)
;idmap uid = 10000-20000
;idmap gid = 10000-20000
;template shell = /bin/bash
#======================= Share Definitions =======================
[homes]
comment = Home Directories
browseable = no
# By default, the home directories are exported read-only. Change next
# parameter to 'yes' if you want to be able to write to them.
writable = no
# File creation mask is set to 0700 for security reasons. If you want to
# create files with group=rw permissions, set next parameter to 0775.
create mask = 0700
# Directory creation mask is set to 0700 for security reasons. If you want to
# create dirs. with group=rw permissions, set next parameter to 0775.
directory mask = 0700
# Un-comment the following and create the netlogon directory for Domain Logons
# (you need to configure Samba to act as a domain controller too.)
;[netlogon]
;comment = Network Logon Service
;path = /home/samba/netlogon
;guest ok = yes
;writable = no
;share modes = no
# Un-comment the following and create the profiles directory to store
# users profiles (see the "logon path" option above)
# (you need to configure Samba to act as a domain controller too.)
# The path below should be writable by all users so that their
# profile directory may be created the first time they log on
;[profiles]
;comment = Users profiles
;path = /home/samba/profiles
;guest ok = no
;browseable = no
;create mask = 0600
;directory mask = 0700
[printers]
comment = All Printers
browseable = yes
path = /var/spool/samba
printable = yes
public =yes
writable = no
create mode = 0700
# Windows clients look for this share name as a source of downloadable
# printer drivers
[print$]
comment = Printer Drivers
path = /var/lib/samba/printers
browseable = yes
read only = yes
guest ok = no
# Uncomment to allow remote administration of Windows print drivers.
# Replace 'ntadmin' with the name of the group your admin users are
# members of.
;write list = root, @ntadmin
按照以上修改后，根据IP地址搜索计算机，应该可以找到打印服务器。
进入后能看到所有的打印机列表，选择其中一款打印机，点击连接即可。
(注：图片太多，不一一上传，太花时间)