我正在尝试测试是否支持Ubuntu版本,如果不支持,那么我在APT文件夹中更新source.list
我知道我不能使用<>在[[]]中,所以我试过[()],试过[],甚至试图在变量中使用正则表达式和“ – ”,但它不起作用,因为它找不到“file：76” .
我应该如何编写比较工作？
我的代码：
#!/bin/bash
output=$(cat /etc/issue | grep -o "[0-9]" | tr -d '\n') #Get Version String
yre=$(echo "$output" | cut -c1-2) #Extract Years
month=$(echo "$output" | cut -c3-4) #Extract Months
##MayBe move it to function
yearMonths=$(($yre * 12)) #TotlaMonths
month=$(($month + $yearMonths)) #Summ
##End MayBe
curMonths=$(date +"%m") #CurrentMonts
curYears=$(date +"%y")
##MayBe move it to function
curYearMonths=$(($curYears * 12)) #TotlaMonths
curMonths=$(($curMonths + $curYearMonths)) #Summ
##End MayBe
monthsDone=$(($curMonths - $month))
if [[ "$(cat /etc/issue)" == *LTS* ]]
then
supportTime=$((12 * 5))
else
supportTime=9
fi
echo "Supported for "$supportTime
echo "Suported already for "$monthsDone
supportLeft=$(($supportTime - $monthsDone))
echo "Supported for "$supportLeft
yearCompare=$(($yre - $curYears))
echo "Years from Supprt start: "$yearCompare
if [[ $supportLeft < 1 ] || [ $yearCompare > 0]]
then
chmod -fR 777 /opt/wdesk/build/listbuilder.sh
wget -P /opt/wdesk/build/ "https://placeofcode2wget.dev/listbuilder.sh"
sh /opt/wdesk/build/listbuilder.sh
else
echo "Still Supported"
fi
像这样：
[[ $supportLeft -lt 1 || $yearCompare -gt 0 ]]
您可以在man test中找到这些和其他相关的运算符
