大约有 26,000 项符合查询结果(耗时:0.0778秒) [XML]

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how to run two commands in sudo?

...ample: $ sudo -s -- 'whoami; whoami' root root Your command would be something like: sudo -u db2inst1 -s -- "db2 connect to ttt; db2 UPDATE CONTACT SET EMAIL_ADDRESS = 'mytestaccount@gmail.com'" If your sudo version doesn't work with semicolons with -s (apparently, it doesn't if compiled wit...
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Android screen size HDPI, LDPI, MDPI [duplicate]

... i mean screen size in pixels. – evilone May 29 '11 at 9:46 ...
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iOS start Background Thread

...formSelectorInBackground:withObject: to spawn a new thread, then the performed selector is responsible for setting up the new thread's autorelease pool, run loop and other configuration details – see "Using NSObject to Spawn a Thread" in Apple's Threading Programming Guide. You'd probably be bett...
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How many system resources will be held for keeping 1,000,000 websocket open? [closed]

...swer: This question is not unique to WebSockets since WebSockets are fundamentally long-lived TCP sockets with a HTTP-like handshake and minimal framing for messages. The real question is: could a single server handle 1,000,000 simultaneous socket connections and what server resources would this c...
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How to count lines in a document?

... Use wc: wc -l <filename> This will output the number of lines in <filename>: $ wc -l /dir/file.txt 3272485 /dir/file.txt Or, to omit the <filename> from the result use wc -l < <filename>: $ wc -l < /dir/file.txt 3...
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What is the difference between bool and Boolean types in C#

...rchangeable But why we need Aliases, From my point of view Boolean is more meaningful then bool and Int32 is more meaningful then int then why aliases ??? – Asim Sajjad Mar 18 '10 at 11:39 ...
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How do I abort the execution of a Python script? [duplicate]

...ave a simple Python script that I want to stop executing if a condition is met. 8 Answers ...
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set date in input type date

i will set today date in datepicker input type date in chrome. 11 Answers 11 ...
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How to select the first element in the dropdown using jquery?

... option would be this, but it will only work for one drop down list at a time as coded below: var myDDL = $('myID'); myDDL[0].selectedIndex = 0; Take a look at this post on how to set based on value, its interesting but won't help you for this specific issue: Change the selected value of a drop-...
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How to count instances of character in SQL Column

...ring then this could be inaccurate. See nickf's solution for a more robust method. – Tom H Dec 7 '09 at 15:28 add a comment  |  ...