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Shell脚本编程30分钟入门linux_shell_30min_guides什么是Shell脚本示例看个例子吧：#! bin shcd ~mkdir shell_tutcd shell_tutfor ((i=0; i<10; i++)); do touch test_$i.txt...
什么是Shell脚本
示例
看个例子吧：
#!/bin/sh
cd ~
mkdir shell_tut
cd shell_tut
for (...
Escape string for use in Javascript regex [duplicate]
...s means it does not match what you will find in the code in the below npm, and does not match what is shown in the below long answer. The comments are also now confusing. My recommendation: use the above, or get it from MDN, and ignore the rest of this answer. -Darren,Nov 2019)
Install
Available o...
Linux command to translate DomainName to IP [closed]
Is there any Linux command to translate domain name to IP?
2 Answers
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How can I capture the right-click event in JavaScript? [duplicate]
I want to block the standard context menus, and handle the right-click event manually.
2 Answers
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Conditionally Remove Dataframe Rows with R [duplicate]
... tried so many complicated answers -- none worked. Your solution is simple and brilliant.
– WGray
Aug 6 '15 at 20:49
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jQuery - replace all instances of a character in a string [duplicate]
This does not work and I need it badly
3 Answers
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Shortcut to switch between design and text in Android Studio
Does anyone know some shortcut to switch between design and text in android studio while editing XML layout?
14 Answers
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count(*) vs count(column-name) - which is more correct? [duplicate]
... null.
Therefore COUNT(*) is what you should use. If you're using MyISAM and there is no WHERE clause, then the optimiser doesn't even have to look at the table, since the number of rows is already cached.
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POST data to a URL in PHP
...url_exec( $ch );
This will send the post variables to the specified url, and what the page returns will be in $response.
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How can I split a string with a string delimiter? [duplicate]
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string[] tokens = str.Split(new[] { "is Marco and" }, StringSplitOptions.None);
If you have a single character delimiter (like for instance ,), you can reduce that to (note the single quotes):
string[] tokens = str.Split(',');
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