Bash，循环意外停止

Question

我的 bash 脚本的最后一部分有问题。它接收来自 500 个网址的输入，并且应该从每个网址获取服务器信息。它工作了一会儿，然后就像 45 元素一样停止。最后我的循环有什么想法吗？

#initializing variables 
timeout=5
headerFile="lab06.output"
dataFile="fortune500.tsv"
dataURL="http://www.tech.mtu.edu/~toarney/sat3310/lab09/"
dataPath="/home/pjvaglic/Documents/labs/lab06/data/"
curlOptions="--fail --connect-timeout $timeout"

#creating the array
declare -a myWebsitearray

#obtaining the data file
wget $dataURL$dataFile -O $dataPath$dataFile

#getting rid of the crap from dos
sed -n "s/^m//" $dataPath$dataFile

readarray -t myWebsitesarray < <(cut -f3 -d$'\t' $dataPath$dataFile)

myWebsitesarray=("${myWebsitesarray[@]:1}")

websitesCount=${#myWebsitesarray[*]}

echo "There are $websitesCount websites in $dataPath$dataFile"

#echo -e ${myWebsitesarray[200]}

#printing each line in the array
for line in ${myWebsitesarray[*]}
do
echo "$line"
done

#run each website URL and gather header information
for line in "${myWebsitearray[@]}"
    do
        ((count++))
        echo -e "\\rPlease wait... $count of $websitesCount"
        curl --head "$curlOptions" "$line" | awk '/Server: / {print $2 }' >> $dataPath$headerFile       
    done

#display results
echo "Results: "
sort $dataPath$headerFile | uniq -c | sort -n

Answer 1

如果您实际上将 --connect-timeout 选项传递给 curl，那肯定会有所帮助。如所写，您当前正在传递单个参数 --fail --connect-timeout $timeout，而不是 3 个不同的参数 --fail、--connect-timeout 和 $timeout。这是您不应该引用变量的一种情况。 IOW，使用：

curl --head $curlOptions "$line"