shell学习三十--综合应用
发布时间：2020-12-15 09:11:27 所属栏目：安全 来源：网络整理
导读：for循环打印下面这句话中的字母数不大于6的单词 I am oldboy teacher welcome to wolf training class. [root@node01 day13]# vi arr01.sh arr=(I am oldboy teacher welcome to wolf training class.) for wolf in ${arr[@]} do if [ ${#wolf} -le 6 ] then
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for循环打印下面这句话中的字母数不大于6的单词 I am oldboy teacher welcome to wolf training class. [root@node01 day13]# vi arr01.sh arr=(I am oldboy teacher welcome to wolf training class.) for wolf in ${arr[@]} do if [ ${#wolf} -le 6 ] then echo $wolf fi done [root@node01 day13]# sh arr01.sh I am oldboy to wolf class. [root@node01 day13]# vi arr02.sh #!/bin/sh arr=(I am oldboy teacher welcome to wolf training class.) for((i=0;i<${#arr[*]};i++)) do if [ ${#arr[$i]} -le 6 ] then echo ${arr[$i]} fi done [root@node01 day13]# sh arr02.sh I am oldboy to wolf class. [root@node01 day13]# vi for.sh #!/bin/sh char="(I am oldboy teacher welcome to wolf training class.)" for n in $char do if [ ${#n} -le 6 ] then echo $n fi done [root@node01 day13]# sh for.sh (I am oldboy to wolf #!/bin/sh for i in I am oldboy teacher welcome to wolf training class. do [ ${#i} -le 6 ] && echo $i done [root@node01 day13]# sh for01.sh I am oldboy to wolf class. [root@node01 day13]# vi awk.sh #!/bin/sh echo "I am oldboy teacher welcome to wolf training class."|awk '{for(i=1;i<=NF;i++) if(length($i)<=6)print $i}' [root@node01 day13]# sh awk.sh I am oldboy to wolf class. [root@node01 day13]#vi wc.sh #!/bin/sh for i in I am oldboy teacher welcome to wolf training class. do [ `echo $i|wc -L` -le 6 ] && echo $i done ------------------------------------------ a、for b、对字符串长度进行判断 c、wc -L d、变量子串${#wolf} e、expr length f、awk （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |