如何在shell脚本中重复该过程

您好，我是shell脚本新手。在我的shell脚本中，我想重复这个过程

script.sh
echo "Enter the city name"
read cityname
echo "Enter the state name"
read statename
pig -x mapreduce mb_property_table_updated.pig city=$cityname state=$statename
echo "Do you want to run for another city"

如果是，表示我想再次重复这些过程，否则将转到下一个过程。如有任何帮助，将不胜感激。

使用while循环

line=yes
while [ "$line" = yes ]
do
echo "Enter the city name"
read cityname
echo "Enter the state name"
read statename
pig -x mapreduce mb_property_table_updated.pig city=$cityname state=$statename
echo "Do you want to run for another city"
read line
done

也在for循环中

for((;;))
do
echo "Enter the city name"
read cityname
echo "Enter the state name"
read statename
pig -x mapreduce mb_property_table_updated.pig city=$cityname state=$statename
echo "Do you want to run for another city"
read answer
if [ "$answer" = "yes" ]
then
continue
else
break
fi
done

---

我会这样做：

while [ "$e" != "n" ]; do
    echo "Enter the city name"
    read cityname
    echo "Enter the state name"
    read statename
    pig -x mapreduce mb_property_table_updated.pig city=$cityname state=$statename
    echo "Do you want to run for another city (y/n)"
    read e
done

---

为了完整性，shell中还有一个经常被忽略的

until

循环

until [ "$answer" = no ]; do
    echo "Enter the city name"
    read cityname
    echo "Enter the state name"
    read statename
    pig -x mapreduce mb_property_table_updated.pig city=$cityname state=$statename
    echo "Do you want to run for another city"
    read answer
done

（；）的

是一个
bash
ism，在shell中可能不可用。