在变量bash中传递'*'循环

Question

我在想如何在变量bash for循环中传递*。我想在一个数据库运行多个SELECT查询，我想我会使用一个bash for循环，像这样：

for query in "select * from filtertype limit 10;" "select * from filter limit 10;"; do echo $query; echo $query | mysql -uroot -ppassword database; done 

麻烦的是*不断扩大越来越像这样：

[Bash]$ for query in "select * from filtertype limit 10;" "select * from filter limit 10;"; do echo $query; echo $query | mysql -uroot -ppassword database; done 
select acceptance_test bin build-dist.xml build-path-definitions.xml build.properties build.xml classes config core-def database dependencies dev.properties dist docs dummyFile_pdffile.pdf eclipse_classes findbugsExcludeFilter.xml generated getRevision.sh local.build.properties log nohup.out plugins-defs plugins-framework pmc-api-client pmd_rules.xml port_helper.sh raw_data-pigunit-input-overridden.txt raw_event_data-pigunit-input-overridden.txt raw-pigunit-input-overridden.txt rpmbuild src testArea unit_test web from filtertype limit 10; 
ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'build-dist.xml build-path-definitions.xml build.properties build.xml classes con' at line 1 
select acceptance_test bin build-dist.xml build-path-definitions.xml build.properties build.xml classes config core-def database dependencies dev.properties dist docs dummyFile_pdffile.pdf eclipse_classes findbugsExcludeFilter.xml generated getRevision.sh local.build.properties log nohup.out plugins-defs plugins-framework pmc-api-client pmd_rules.xml port_helper.sh raw_data-pigunit-input-overridden.txt raw_event_data-pigunit-input-overridden.txt raw-pigunit-input-overridden.txt rpmbuild src testArea unit_test web from filter limit 10; 
ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'build-dist.xml build-path-definitions.xml build.properties build.xml classes con' at line 1 
[Bash]$ 

当我试图围绕循环变量单引号，我得到了同样的错误，当我单，双引号，我得到了明星：

select \* from filtertype limit 10; 
ERROR at line 1: Unknown command '\*'. 
select \* from filter limit 10; 
ERROR at line 1: Unknown command '\*'. 

所以，问题是 - 是否有可能通过一个字符串变量以“* '在它成为一个bash循环？

一个

Answer 1

的问题是，您的变量引用，$query，是不带引号，因而受到shell扩展（在这种情况下，*扩展到文件和目录的名称在当前目录，一个称为路径名扩展的过程）。

因此，简单地双引号您的变量的引用，以保护他们免受扩展：

echo "$query" 

Answer 2

我找到了答案。希望这对其他人至少有用。解决的办法是引用变量，当它获取调用：

for query in "select * from filtertype limit 10;" "select * from filter limit 10;"; do echo "$query"; echo "$query" |mysql -uroot -ppassword database; done 

这一工程

一个