話說家中有部陳年的 HP LaserJet P1006。呢部嘢十分騎呢，我都唔係好知 printing o既 protocol，以我有限o既知識o既理解就係，呢部煩嘢係將要 print o既嘢，全部轉成 image 先再 print 出嚟，估計都係啲史前o既產物。
轉入正題，話說近來我安裝o左 unRAID，突然靈機一觸，既然個 server 長著，係唔係又好似之前 DSM o既實驗咁，host 個 printer server 令部陳年 laser printer 可以變成 network printer 呢。
上網 search 咗一下，有一個 docker 叫 CUPS，用嚟做 printer server。咁我就拿拿林就安裝，揀好型號再裝好 driver，到裝好之後就試 print test print。事情就當然無咁順利喇。部 printer 一啲反應都無。click 落去 log，就有一堆 error：
E [15/Jan/2022:13:19:16 -0600] [Client 307] Returning IPP client-error-document-format-not-supported for CUPS-Add-Modify-Printer (ipp://localhost/printers/HP_LaserJet_P1006) from localhost. E [15/Jan/2022:13:19:49 -0600] [Client 313] Returning IPP client-error-document-format-not-supported for CUPS-Add-Modify-Printer (ipp://localhost/printers/HP_LaserJet_P1006) from localhost. E [15/Jan/2022:13:19:59 -0600] [Client 318] Returning IPP client-error-document-format-not-supported for CUPS-Add-Modify-Printer (ipp://localhost/printers/HP_LaserJet_P1006) from localhost. W [15/Jan/2022:13:25:19 -0600] CreateProfile failed: org.freedesktop.DBus.Error.ServiceUnknown:The name org.freedesktop.ColorManager was not provided by any .service files W [15/Jan/2022:13:25:19 -0600] CreateProfile failed: org.freedesktop.DBus.Error.ServiceUnknown:The name org.freedesktop.ColorManager was not provided by any .service files W [15/Jan/2022:13:25:19 -0600] CreateDevice failed: org.freedesktop.DBus.Error.ServiceUnknown:The name org.freedesktop.ColorManager was not provided by any .service files
上網一查，發現部 printer 除咗要裝 driver 之外，仲要裝一個HPLIP o既 Plug-in 佢先可以 printer 到嘢。估計都係因為佢奇奇怪怪o既打印方法。我遇到兩個問題，就係唔知點 download 同唔知點 run。
https://developers.hp.com/hp-linux-imaging-and-printing/plugins
睇完一大輪，HP 淨係叫人喺 CLI 度打 HP-setup 或者 HP-plugin，我心諗，屌，我喺 docker 度裝 CUPS，咩都無裝又點會行到呢兩個 command 呀師傅。
搞咗一大輪，沮喪到就嚟放棄之際，我就喺 terminal 度手痕打 HP-plugin 試下。嘩，屌，真係有反應o架喎。唔好問我點解得，我都唔知點解，佢可能原生就有娤咗 HP 個 printing package。但入到去有三個 options, d 就係 download，p 就俾條 path, q 就 exit。揀 'd' 佢又話 download 唔到喎。咁我咪 wget 個 plug-in 囉，可以去呢個網址度睇下：
https://developers.hp.com/hp-linux-imaging-and-printing/plugins
一個係 .run 尾，一個係 .asc 尾，兩個都要 download，因為佢要計一下個 plug-in 係唔係原裝無俾人 alert 過。跟住再 hp-plugin 入去，今次揀 p 去 specify 頭先 download 咗返嚟個 path。仆你街，佢又話咩 Gnu command not found。上網搵一輪之後原來又要裝個咩 gnupg o既 package。由於 CUPS 係 debian 底o既 docker。所以可以用 apt install gnupg 呢個 command 去 download 同 install 所需 package. 之後再行 hp-plugin，入到去再 specify 條 path 就真係大功告成。我估唔到真係會得咗。
最開心係 iPhone 都睇到個 printer 可以喺部陳年 printer 度打印。又學多樣嘢。
學黃子華話齋，唔搵錢嗰啲，係技能定無能呢？
https://developers.hp.com/sites/default/files/hplip-3.18.12-plugin.run
https://developers.hp.com/sites/default/files/hplip-3.18.12-plugin.run.asc
