在變量bash中傳遞'*'循環

Question

我在想如何在變量bash for循環中傳遞*。我想在一個數據庫運行多個SELECT查詢，我想我會使用一個bash for循環，像這樣：

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

麻煩的是*不斷擴大越來越像這樣：

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

當我試圖圍繞循環變量單引號，我得到了同樣的錯誤，當我單，雙引號，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，問題是 - 是否有可能通過一個字符串變量以「* '在它成爲一個bash循環？

一個

Answer 1

的問題是，您的變量引用，$query，是不帶引號，因而受到shell擴展（在這種情況下，*擴展到文件和目錄的名稱在當前目錄，一個稱爲路徑名擴展的過程）。

因此，簡單地雙引號您的變量的引用，以保護他們免受擴展：

echo "$query" 

Answer 2

我找到了答案。希望這對其他人至少有用。解決的辦法是引用變量，當它獲取調用：

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

這一工程

一個