shell 判断字符串是否包含另一个字符串

1.使用grep

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s1=“abcdefg”
s2=“bcd”
result=$(echo $s1 | grep "${s2}")
if [[ “ $result" != "" ]] then echo "$s1 include $s2”
else
echo “$1 not include $s2”
fi
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2. 使用操作符~

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fileName=/home/sss/data/hk

if [[ $fileName =~hk ]] then echo "$fileName include hk"
else
echo “not include”
fi
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3. 使用通配符*

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A=“helloworld”
B=“low”
if [[ $A == *$B* ]]
then
echo “包含”
else
echo “不包含”
fi
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