为Linux安装虚拟PDF打印机

今天发现一个 CUPS-PDF 项目,可以为 CUPS(Common Unix Printing System) 添加 PDF 打印机.

步骤非常简单:

1. 安装 CPUS-PDF

   sudo apt install -y cups-pdf
   

2. 根据 CPUS-PDF的文档说明, 需要设置 cups-pdf 的所有者为 root,且权限为 0700

   sudo chown root:root /usr/lib/cups/backend/cups-pdf
   sudo chmod 0700 /usr/lib/cups/backend/cups-pdf
   

3. 重启CUPS服务

   sudo systemctl restart cups.service
   

4. 可以通过修改 /etc/cups/cups-pdf.conf 的 OUT 参数来设置pdf的输出位置

   ### Key: Out (config)                                                        
   ##  CUPS-PDF output directory                                                
   ##  special qualifiers:                                                      
   ##     ${HOME} will be expanded to the user's home directory                 
   ##     ${USER} will be expanded to the user name                             
   ##  in case it is an NFS export make sure it is exported without             
   ##  root_squash!                                                             
   ##  on Ubuntu, the cupsd AppArmor profile needs to be updated                
   ##  to match the output path as per instructions in LP:147551                
   ### Default: /var/spool/cups-pdf/${USER}                                     
   
   Out ${HOME}/PDF                                                              
   

5. 然后在CUPS的admin页面中就能看到一个PDF打印机了

   

   或者用 lpstat 来查看:

   lpstat -p -d
   

   printer PDF is idle.  enabled since Sat 11 Apr 2020 09:52:10 PM HKT
   system default destination: PDF
   

6. 使用 lpr 打印一个文件试试

   lp ~/dead.letter
   

   request id is PDF-5 (1 file(s))
   

   ls ~/PDF
   

   dead.letter__2_PDF-job_5.pdf
   

7. 最后要注意的是，根据 README 的说明，客户端选择打印机时，供应商应该选择 Postscript, model选择 Color Printer