Three methods about calculate string length

时间：2018-01-11 11:10:48 阅读：206 评论：0 收藏：0 [点我收藏+]

#! /bin/bash
for i in I am oldboy linx welcome to our training ;do
if [ echo ${#i} -ge 6 ];then
echo $i
fi
done

for i in I am oldboy linx welcome to our training ;do
if [ echo $i|wc -L -ge 6 ];then
echo $i
fi
done

for i in I am oldboy linx welcome to our training ;do
if [ expr length $i -ge 6 ];then
echo $i
fi
done

原文：http://blog.51cto.com/546136/2059731

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