shell问答11：取字符串或变量值的最后两位

1.echo string|awk '{print substr(,length()-1,length())}'
2.echo string|sed 's/\(.*\)\(..$\)//'
3.echo string|rev|cut -c-2|rev
4.echo $-2)):2}或echo $
5.echo string|grep -o ..$
6.echo string|rev|colrm 3|rev
7.expr string : ".*\(..\)$"

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