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Run cron job only if it isn't already running
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Use flock. It's new. It's better.
Now you don't have to write the code yourself. Check out more reasons here: https://serverfault.com/a/82863
/usr/bin/flock -n /tmp/my.lockfile /usr/local/bin/my_script
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How to run mvim (MacVim) from Terminal?
... A year ago that was what you got when you downloaded MacVim. Now it's a.tbz file, but the script is still there.
– Gordon Robertson
Mar 9 '11 at 10:39
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Last iteration of enhanced for loop in java
... sb.append(delim).append(i);
delim = ",";
}
Update: For Java 8, you now have Collectors
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Change text color of one word in a TextView
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Easiest way I know is to just use html.
String first = "This word is ";
String next = "<font color='#EE0000'>red</font>";
t.setText(Html.fromHtml(first + next));
But this will require you to rebuild the TextView when (if?) yo...
How to have jQuery restrict file types on upload?
...t button through a JavaScript function already so I really just need to know how to check for the file types before submit or alert.
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mysql update column with value from another table
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i don't know if i understood your question clearly, can you check my updated answer?
– John Woo
Jul 29 '12 at 12:11
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SQL Inner-join with 3 tables?
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You just need a second inner join that links the ID Number that you have now to the ID Number of the third table. Afterwards, replace the ID Number by the Hall Name and voilá :)
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How to run a JAR file
...ms.MainClass
Change 'your.programs.MainClass' to your actual main class. Now put the file into the Jar-file, in a subfolder named 'META-INF'. You can use any ZIP-utility for that.
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Initializing multiple variables to the same value in Java
...declaring multiple variables of the same type and of the same value. Right now I have:
7 Answers
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How to remove trailing whitespaces with sed?
...kely forget to escape the t :) \t is a tab, for those who may not already know.
– Sean Allred
Dec 12 '14 at 19:27
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