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How do I change permissions for a folder and all of its subfolders and files in one step in Linux?
... @Nilzor chmod 644 {} \; specifies the command that will be executed by find for each file. {} is replaced by the file path, and the semicolon denotes the end of the command (escaped, otherwise it would be interpreted by the shell instead of find).
– tobbez
...
Creation timestamp and last update timestamp with Hibernate and MySQL
... MySQL trigger so that even if the full entity is not saved or is modified by any external application or manual query, it'll still update these fields.
– Webnet
Jul 25 '13 at 12:09
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Can I make fast forwarding be off by default in git?
...it show up. Is there any way to configure git to have fast forwarding off by default? The fact that there's an --ff option would seem to imply that there's a way, but I can't seem to find it in the documentation.
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Warning the user/local/mysql/data directory is not owned by the mysql user
...el prefs appears 'warning the user/local/mysql/data directory is not owned by the mysql user', you have to:
sudo chown -RL root:mysql /usr/local/mysql
sudo chown -RL mysql:mysql /usr/local/mysql/data
sudo /usr/local/mysql/support-files/mysql.server start
...
Decimal number regular expression, where digit after decimal is optional
...same expression with whitespace, using the extended modifier (as supported by Perl):
/^ [+-]? ( (\d+ (\.\d*)?) | (\.\d+) ) $/x
or with comments:
/^ # Beginning of string
[+-]? # Optional plus or minus character
( # Followed by either:
( # Start of fi...
Is it possible to make a type only movable and not copyable?
... two: int,
three: int,
_marker: NoCopy
}
You can also do it by having a destructor (via implementing the Drop trait), but using the marker types is preferred if the destructor is doing nothing.
Types now move by default, that is, when you define a new type it doesn't implement Copy ...
How do I empty an array in JavaScript?
...array will remain unchanged. Only use this if you only reference the array by its original variable A.
This is also the fastest solution.
This code sample shows the issue you can encounter when using this method:
var arr1 = ['a','b','c','d','e','f'];
var arr2 = arr1; // Reference arr1 by another...
What is the result of % in Python?
...ulo) operator yields the remainder from the division of the first argument by the second. The numeric arguments are first converted to a common type. A zero right argument raises the ZeroDivisionError exception. The arguments may be floating point numbers, e.g., 3.14%0.7 equals 0.34 (since 3.14 equa...
In Git, how can I write the current commit hash to a file in the same commit
...
Could someone further expound with a step by step on how to do this? Or at least a nudge in the right direction?
– Joel Worsham
Dec 1 '14 at 15:52
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How do I increase the number of displayed lines of a Java stack trace dump?
...frames from the bottom of the stack trace of the exception that was caused by this exception (the "enclosing" exception).
This shorthand can greatly reduce the length of the output in the common case where a wrapped exception is thrown from same method as the "causative exception" is caught.
In oth...