Linux 下可以通过 CUPS 共享打印机，那有没有共享扫描仪的方案

文件和打印的共享有网络协议，扫描仪的没网络协议，所以各家都没出规范的协议，benq自己弄过一种可以共享的，但是我在佳能的机器上测试过不行。其实不要把问题想复杂了，扫描仪一般有扫描按钮，装了对应的应用程序就可以支持直接在机器上按，然后文件扫描到共享文件夹里，其他电脑就可以看了，这样就 是自动化了……如果没有的话，就考虑自己写个自动扫描，然后文件存在共享文件夹里就好了。然后考虑下怎样触发它……

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Linux下一般使用sane做为扫描仪后端，安装如下：

sudo apt-get install sane sane-utils xsane

hua@node1:~$ sudo sane-find-scanner

# sane-find-scanner will now attempt to detect your scanner. If the

# result is different from what you expected, first make sure your

# scanner is powered up and properly connected to your computer.

# No SCSI scanners found. If you expected something different, make sure that

# you have loaded a kernel SCSI driver for your SCSI adapter.

found USB scanner (vendor=0x04a9 [Canon], product=0x1909 [CanoScan], chip=GL124) at libusb:003:005

# Your USB scanner was (probably) detected. It may or may not be supported by

# SANE. Try scanimage -L and read the backend's manpage.

# Not checking for parallel port scanners.

# Most Scanners connected to the parallel port or other proprietary ports

# can't be detected by this program.

hua@node1:~$ scanimage -L

device `genesys:libusb:003:005' is a Canon LiDE 110 flatbed scanner

hua@node1:~$ sudo usermod -a -G lp hua

但是这样会报错“failed to start scanner invalid argument xsane”， 这是因为一个Bug[3]，直接安装链接[2]中的包即可。

至于打印机后端一般有XSane, Simple Scan, Skanlite等，我使用的Siple Scan。

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