dpost (PostScript打印機的troff 后處理器)

rose1 發表于 2020-08-29 06:03

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命令行 Unix&Linux命令 dpost

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在Solaris操作系統上，dpost命令是PostScript 打印機的troff后處理器。

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1 dpost 運行系統環境

2 dpost 說明

3 dpost 語法

4 dpost 例子

dpost 運行系統環境

Linux

dpost 說明

dpost將troff創建的文件轉換為PostScript并將結果寫在標準輸出上。如果未指定文件，或者“ - ”是輸入文件之一，則讀取標準輸入。

文件應由troff準備。/ usr / lib / font / devpost中的缺省字體文件產生最佳和最有效的輸出。它們的分辨率為720 dpi，可以通過在troff命令中添加-Tpost選項來格式化文件。較早版本的eqn和pic預處理程序需要知道troff將用于格式化文件的分辨率。如果這些是系統上安裝的版本，則將-r720選項與eqn一起使用，并將-T720與pic 一起使用。

dpost不對解決方案做任何假設。第一個x res命令設置用于轉換輸入文件的分辨率，DESC.out文件（通常為/usr/lib/font/devpost/DESC.out）定義二進制字體文件中使用的分辨率，而PostScript序言是負責建立適當的用戶坐標系。

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dpost 語法

dpost [-c num] [-e num] [-m num] [-n num] [-o list] [-w num] [-x num] [-y num] 
      [-F dir] [-H dir] [-L file] [-O] [-T name] [file]...

選件

-c num	每頁打印num份。默認情況下，僅打印一份。
-e num	將文本編碼級別設置為num。所識別的選擇是0，1，和2。隨著num的增加，輸出文件的大小和打印時間應減少。級別2的編碼通常比級別0快20％，級別0是默認設置，并且產生的輸出與dpost的先前版本基本相同。
-m num	將每個邏輯頁面放大num倍。頁面圍繞原點進行統一縮放，該原點位于每頁的左上角附近。默認放大倍數為1.0。
-n num	在每張紙上打印num個邏輯頁，其中num可以是任何正整數。默認情況下，num設置為1。
-o list	打印那些在逗號分隔列表中給出編號的頁面。該列表包含單個數字N和范圍N1-N2。N1丟失表示編號最低的頁面，N2丟失表示編號最高的頁面。頁面范圍是邏輯頁面而不是物理紙的表達。例如，如果要在一張紙上打印兩個邏輯頁面，并且指定范圍為4，則將打印兩張紙，其中包含四個頁面布局。如果您將頁面范圍指定為3-4，則在向工作表請求兩個邏輯頁面時；那么僅會打印第3頁和第4頁版面，并且它們會出現在一張紙上。
-p mode	以縱向或橫向模式打印文件。只有mode的第一個字符有效（可以分別指定p或l）。默認模式是縱向。
-w num	將用于執行troff圖形命令的線寬設置為num個點，其中一個點大約是1/72英寸。默認情況下，num設置為0.3點。
-x num	沿正x軸平移原點num英寸。默認坐標系的原點固定在頁面左上角附近，x值為正，右邊為y。正NUM移動的一切權利。默認偏移量是0英寸。
-y num	沿正y軸平移原點num英寸。正數可將文本向上移動到頁面上。默認偏移量為0。
-F dir	使用dir作為字體目錄。默認目錄為/ usr / lib / font，并且dpost從目錄/ usr / lib / font / devpost讀取二進制字體文件。
-H dir	使用dir作為主機駐留字體目錄。該目錄中的文件應該是完整的PostScript字體描述，并且必須分配一個與相應的兩字符 troff字體名稱相對應的名稱。每個字體文件僅在需要時復制到輸出文件，并且在每個作業期間最多復制一次。沒有默認目錄。
-L file	使用文件作為PostScript序言，默認情況下為/usr/lib/lp/postscript/dpost.ps。
-O	禁用PostScript圖片包含。當dpost由網絡環境中的假脫機程序運行時，建議使用此選項。
-T name	使用字體文件作為設備名稱，以作為可用PostScript字體的最佳描述。默認情況下，name設置為post，并且dpost從/ usr / lib / font / devpost讀取二進制文件。

dpost [-c num] [-e num] [-m num] [-n num] [-o list] [-w num] [-x num] [-y num] 
      [-F dir] [-H dir] [-L file] [-O] [-T name] [file]...

Options

-c num	Print num copies of each page. By default, only one copy is printed.
-e num	Sets the text encoding level to num. The recognized choices are 0, 1, and 2. The size of the output file and print time should decrease as num increases. Level 2 encoding will typically be about 20 percent faster than level 0, which is the default and produces output essentially identical to previous versions of dpost.
-m num	Magnify each logical page by the factor num. Pages are scaled uniformly about the origin, which is located near the upper left corner of each page. The default magnification is 1.0.
-n num	Print num logical pages on each piece of paper, where num can be any positive integer. By default, num is set to 1.
-o list	Print those pages for which numbers are given in the comma-separated list. The list contains single numbers N and ranges N1-N2. A missing N1 means the lowest numbered page, a missing N2 means the highest. The page range is an expression of logical pages rather than physical sheets of paper. For example, if you are printing two logical pages to a sheet, and you specified a range of 4, then two sheets of paper would print, containing four page layouts. If you specified a page range of 3-4, when requesting two logical pages to a sheet; then only page 3 and page 4 layouts would print, and they would appear on one physical sheet of paper.
-p mode	Print files in either portrait or landscape mode. Only the first character of mode is significant (you can specify p or l, respectively). The default mode is portrait.
-w num	Set the line width used to implement troff graphics commands to num points, where a point is approximately 1/72 of an inch. By default, num is set to 0.3 points.
-x num	Translate the origin num inches along the positive x-axis. The default coordinate system has the origin fixed near the upper left corner of the page, with positive x to the right and positive y down the page. Positive num moves everything right. The default offset is 0 inches.
-y num	Translate the origin num inches along the positive y-axis. Positive num moves text up the page. The default offset is 0.
-F dir	Use dir as the font directory. The default dir is /usr/lib/font, and dpost reads binary font files from directory /usr/lib/font/devpost.
-H dir	Use dir as the host resident font directory. Files in this directory should be complete PostScript font descriptions, and must be assigned a name that corresponds to the appropriate two-character troff font name. Each font file is copied to the output file only when needed and at most once during each job. There is no default directory.
-L file	Use file as the PostScript prologue which, by default, is /usr/lib/lp/postscript/dpost.ps.
-O	Disables PostScript picture inclusion. A recommended option when dpost is run by a spooler in a networked environment.
-T name	Use font files for device name as the best description of available PostScript fonts. By default, name is set to post and dpost reads binary files from /usr/lib/font/devpost.

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dpost 例子

pic -T720 file | tbl | eqn -r720 | troff -mm -Tpost | dpost

對于安裝了較舊版本的eqn和pic的系統，此命令可能會提供最佳格式。可以根據您特定硬件設置上的打印結果來調整特定參數。

pic -T720 file | tbl | eqn -r720 | troff -mm -Tpost | dpost

This command will likely give the best formatting for a system with older versions of eqn and pic installed. The specific parameters can be tweaked according to the printing results on your particular hardware setup.

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其他命令行

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