第一类：数字性循环
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for1-1.sh
#!/bin/bash for((i=1;i<=10;i++)); do echo $(expr $i \* 3 + 1); done
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for1-2.sh
#!/bin/bash for i in $(seq 1 10) do echo $(expr $i \* 3 + 1); done
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for1-3.sh
#!/bin/bash
for i in {1..10}
do
echo $(expr $i \* 3 + 1);
done-----------------------------
for1-4.sh
#!/bin/bash
awk 'BEGIN{for(i=1; i<=10; i++) print i}'第二类：字符性循环
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for2-1.sh
#!/bin/bash for i in `ls`; do echo $i is file name\! ; done
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for2-2.sh
#!/bin/bash for i in $* ; do echo $i is input chart\! ; done
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for2-3.sh
#!/bin/bash for i in f1 f2 f3 ; do echo $i is appoint ; done
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for2-4.sh
#!/bin/bash list="rootfs usr data data2" for i in $list; do echo $i is appoint ; done
第三类：路径查找
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for3-1.sh
#!/bin/bash for file in /proc/*; do echo $file is file path \! ; done
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for3-2.sh
#!/bin/bash for file in $(ls *.sh) do echo $file is file path \! ; done
生产环境实战：
[root@office builds]# cat /server/scripts/clean_war.sh #!/bin/bash # description: Clean all jenkins build war. ############################################################## # File Name: clean_war # Version: V1.0 # Author: jeremy # QQ: 88888888 # Organization: www.qq.com # Created Time : 2018-09-14 18:33:19 ############################################################## war=" jdwin-upms-server.war jdwin-crm-admin.war jdwin-cms-admin.war jdwin-ucenter-admin.war jdwin-upms-rpc-service-assembly.tar.gz jdwin-crm-rpc-service-assembly.tar.gz jdwin-ucenter-rpc-service-assembly.tar.gz jdwin-cms-rpc-service-assembly.tar.gz jdwin-sns-rpc-service-assembly.tar.gz pc-ui-1.0.1-R1.war mobile-ui-1.0.1-R1.war sunfo-admin-1.0.1-R1.war " for war in $war do find /data/jenkins/ -type f -name $war |xargs rm -f done
https://blog.csdn.net/babyfish13/article/details/52981110
