在bash環境中將命令從另一個文件插入gnuplot腳本

Question

在我的bash腳本中，我在開始gnuplot腳本之前執行了一系列操作。我的bash腳本是這樣的：

#!/bin/bash -e 

    # Do some bash operations here 

    # Create a file containing a list of Gnuplot commands called arrow_coords 
    # All the commands are the same: just drawing a group of arrows 
    # Every line in "arrow_coords" looks like this: 
    # set arrow from -500,-100 to 500,-100 as 1 
    # There are hundreds of those line commands 

    # Entering Gnuplot script 

    gnuplot <<- EOF 
    reset 
    set terminal pngcairo transparent nocrop enhanced font '$font_type, 22' size 1800,1800 
    set output "$output_file" 
    set yrange [-1:18] 
    set xrange [-1:18] 
    ? <----------------------------------- HOW TO INSERT COMMANDS FROM ANOTHER FILE? 
    plot '$dat_file' using 1:2 with points ls 1 
    EOF 

我無法找到一個方法來插入寫​​在arrow_coords進入gnuplot的腳本，我在我的bash文件中的命令。這可能嗎？對於我想要做的事情，還有其他建議嗎？

Answer 1

下面是說明了解決方案的例子：

#!/bin/bash 

# prepare file  
echo "Test!" > test.txt 

a=`cat test.txt` 
cat <<- EOF 
File contents: $a 
Again: `cat test.txt` 
EOF 

因此，在你的代碼，你可以代替開始?與線：

`cat the_file_you_generated` 

Answer 2

如果您的文件僅包含gnuplot的說明，您可以使用load或call命令運行它：

gnuplot <<- EOF 
    # your gnuplot configurations 
    load 'arrow_coords' # calling external file 
    plot '$dat_file' using 1:2 with points ls 1 
EOF