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判断字符串1是否包含字符串2

2009-06-11 16:45:59| 分类： shell | 标签： |举报 |字号大中小订阅

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#!/bin/sh

aa="USD/GBP"
#aa="USD/JPY"
bb="abc a USD/GBP OWE"

#=========method-1=====(bash 3+)
#[[ "$bb" =~ "$aa" ]] && echo $aa

#=========method-2=====
#case $aa in
#     $bb)
#       echo $aa;;
#      *)
#        echo $bb;;
#esac

#=========method-3=====
#[[ $bb == *$aa* ]] && echo $aa

#=========method-4=====
if echo $bb |grep -q "$aa";then
echo $aa
else
echo $bb
fi

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