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rsync: difference between --size-only and --ignore-times
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There are several ways rsync compares files -- the authoritative source is the rsync algorithm description: https://www.andrew.cmu.edu/course/15-749/READINGS/required/cas/tridgell96.pdf. The wikipedia article on rsync is also very good.
For local files, rsync compares metadata a...
How to use my view helpers in my ActionMailer views?
... use the methods I defined in app/helpers/annotations_helper.rb in my ReportMailer views ( app/views/report_mailer/usage_report.text.html.erb ). How do I do this?
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Difference between HEAD and master
...type of reference that points to another reference. It may point to master or it may not (it will point to whichever branch is currently checked out). If you know you want to be committing to the master branch then push to this.
Here is a visual example:
On your own repository you can check wher...
How do I use vi keys in ipython under *nix?
...ass an option:
$ ipython --TerminalInteractiveShell.editing_mode=vi
... or to set it globally in the profile configuration (~/.ipython/profile_default/ipython_config.py; create it with ipython profile create if you don't have it) with:
c.TerminalInteractiveShell.editing_mode = 'vi'
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What good are SQL Server schemas?
...s, I know the basic definition of a schema, but what are they really used for in a typical SQL Server deployment?
12 Answer...
C++ Redefinition Header Files (winsock2.h)
...Class.h in many files, so it includes multiple times and redefinition error occurs. How to prevent?
16 Answers
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Sort array of objects by object fields
How can I sort this array of objects by one of its fields, like name or count ?
19 Answers
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Passing parameters to a Bash function
...I prefer the second approach.
function function_name {
command...
}
or
function_name () {
command...
}
To call a function with arguments:
function_name "$arg1" "$arg2"
The function refers to passed arguments by their position (not by name), that is $1, $2, and so forth. $0 is the n...
Grepping a huge file (80GB) any way to speed it up?
This has been running for an hour on a fairly powerful linux server which is otherwise not overloaded.
Any alternative to grep? Anything about my syntax that can be improved, (egrep,fgrep better?)
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How is Math.Pow() implemented in .NET Framework?
I was looking for an efficient approach for calculating a b (say a = 2 and b = 50 ). To start things up, I decided to take a look at the implementation of Math.Pow() function. But in .NET Reflector , all I found was this:
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