抨击将输出重定向到程序 [英] Bashing redirecting output to a program

问题描述

为什么不读取文本文件.这里更好的方法是我的代码.我正在尝试使用 for 读取一行，但它似乎不起作用

Why isn't it reading the text file. What's a better way here is my code. I am trying to read a line using for but it doesnt seem to work

if [[ "$#" -ne 1 ]]
then
    writeusage
    exit
fi
your_path=../file/test1
test_path=../../public/test1
file_input="$1"
while read -r line
do
   args+="$line"
done < "$file_input"
# Redirect the output to a file named text
$test_path > correctanswer 2>&1
# Redirect your output to a file named text2
$your_path > youranswer 2>&1
# diff the solutions
diff correctanswer youranswer

推荐答案

(( $# == 1 )) || { writeusage; exit 1; }

your_path=../file/test1
test_path=../../public/test1
file_input="$1"

# for bash older than 4.x
while read -r line; do
   args+=( "$line" )
done < "$file_input"

## ...for newer bash, you could do this instead:
# readarray -t args <"$file_input"

# Redirect the output to a file named text
"$test_path" "${args[@]}" > correctanswer 2>&1
# Redirect your output to a file named text2
"$your_path" "${args[@]}" > youranswer 2>&1
# diff the solutions
diff correctanswer youranswer

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