使用 Gnu Parallel 並行執行多個 Gnuplot 命令

我想並行執行 Gnuplot 命令列表。

我收到“無法辨識的選項”錯誤：

$ ./parallel-plot-sine.sh | parallel -q gnuplot
unrecognized option -e "set terminal pngcairo; set output '100.png'; set title 'Sample rate: 100'; set key left box; set autoscale; set samples 100; plot [-30:20] sin(x)"

我認為這表明 Gnuplot 對輸入的命令不滿意，但我不知道為什麼。

shell 腳本parallel-plot-sine.sh組成將輸入 Gnu Parallel 的命令：

#!/bin/bash

# Compose command-lines to run in parallel
command_array=()
for fs in $(seq 100 100 1000); do
   command_array+=("-e \"set terminal pngcairo; set output '${fs}.png'; set title 'Sample rate: $fs'; set key left box; set autoscale; set samples $fs; plot [-30:20] sin(x)\"")
done

# Print command strings to output for gnu parallel
for cmd in "${command_array[@]}"; do
   printf "%s\n" "$cmd"
done

這列印：

$ ./parallel-plot-sine.sh
-e "set terminal pngcairo; set output '100.png'; set title 'Sample rate: 100'; set key left box; set autoscale; set samples 100; plot [-30:20] sin(x)"
-e "set terminal pngcairo; set output '200.png'; set title 'Sample rate: 200'; set key left box; set autoscale; set samples 200; plot [-30:20] sin(x)"
-e "set terminal pngcairo; set output '300.png'; set title 'Sample rate: 300'; set key left box; set autoscale; set samples 300; plot [-30:20] sin(x)"
-e "set terminal pngcairo; set output '400.png'; set title 'Sample rate: 400'; set key left box; set autoscale; set samples 400; plot [-30:20] sin(x)"
-e "set terminal pngcairo; set output '500.png'; set title 'Sample rate: 500'; set key left box; set autoscale; set samples 500; plot [-30:20] sin(x)"
-e "set terminal pngcairo; set output '600.png'; set title 'Sample rate: 600'; set key left box; set autoscale; set samples 600; plot [-30:20] sin(x)"
-e "set terminal pngcairo; set output '700.png'; set title 'Sample rate: 700'; set key left box; set autoscale; set samples 700; plot [-30:20] sin(x)"
-e "set terminal pngcairo; set output '800.png'; set title 'Sample rate: 800'; set key left box; set autoscale; set samples 800; plot [-30:20] sin(x)"
-e "set terminal pngcairo; set output '900.png'; set title 'Sample rate: 900'; set key left box; set autoscale; set samples 900; plot [-30:20] sin(x)"
-e "set terminal pngcairo; set output '1000.png'; set title 'Sample rate: 1000'; set key left box; set autoscale; set samples 1000; plot [-30:20] sin(x)"

這些命令像這樣單獨工作：

gnuplot -e "set terminal pngcairo; set output '1000.png'; set title 'Sample rate: 1000'; set key left box; set autoscale; set samples 1000; plot [-30:20] sin(x)"

GNU 平行引號預設輸入。您提供已引用的輸入。有幾種解決方案。

更改輸入：

-e "set terminal pngcairo; set output '100.png'; set title 'Sample rate: 100'; set key left box; set autoscale; set samples 100; plot [-30:20] sin(x)"

至：

set terminal pngcairo; set output '100.png'; set title 'Sample rate: 100'; set key left box; set autoscale; set samples 100; plot [-30:20] sin(x)

並執行：

... | parallel gnuplot -e

或者：

... | parallel eval gnuplot

# Requires version >= 20190722
... | parallel gnuplot {=uq=}

引用自：https://unix.stackexchange.com/questions/652836