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Quick unix command to display specific lines in the middle of a file?
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I found two other solutions if you know the line number but nothing else (no grep possible):
Assuming you need lines 20 to 40,
sed -n '20,40p;41q' file_name
or
awk 'FNR>=20 && FNR<=40' file_name
...
VBoxManage: error: Failed to create the host-only adapter
...upport/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh" restart
You should now be able to run vagrant up or vagrant reload and have your new host configured.
As mentioned in this answer, recent versions of macOS can block VirtualBox.
Solution:
Go to System Preferences > Security & Pri...
Python 2.7 getting user input and manipulating as string without quotations
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Although for anyone reading this using Python 3, input now works this way, and raw_input is gone.
– Thomas K
Feb 10 '11 at 17:35
4
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How to get object length [duplicate]
...re, it's still not on Google's CDN yet, but there is demand for it. As for now, I've found underscore at this CDN - it's hosted on Amazon servers so it should be fast and reliable.
– Šime Vidas
Apr 4 '11 at 0:33
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How do you change the datatype of a column in SQL Server?
...taType. Very scary, so be careful (it may be a cache-bug that is fixed by now or one MS never bothers fixing). For those wondering why I ran T-SQL when I use Design-View, I wanted to alter my DataTypes to SysName (which SSMS does not allow).
– MikeTeeVee
Apr ...
How to implement static class member functions in *.cpp file?
...include "helper.hxx"
A::foo() {
helper::fn1();
helper::fn2();
}
To know more about how c++ handles static functions visit: Are static member functions in c++ copied in multiple translation units?
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how to get GET and POST variables with JQuery?
...to emit is actually empty, you will get a javascript syntax error. If you know it's a string, you should wrap it in quotes. If it's an integer, you may want to test to see if it actually exists before writing the line to javascript.
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Exclude .svn directories from grep [duplicate]
...:
alias sgrep='find . -path "*/.svn" -prune -o -print0 | xargs -0 grep'
Now you can do this:
sgrep some_var
... and get expected results.
Of course, if you're an insane person like me who just has to use the same .bashrc everywhere, you could spend 4 hours writing an overcomplicated bash func...
How to create directory automatically on SD card
...e output file
File outputFile = new File(wallpaperDirectory, filename);
// now attach the OutputStream to the file object, instead of a String representation
FileOutputStream fos = new FileOutputStream(outputFile);
Note: It might be wise to use Environment.getExternalStorageDirectory() for getting...
How to get a value from a cell of a dataframe?
...as 10.1/13.1
I upgraded from 10.1 to 13.1, before iloc is not available.
Now with 13.1, iloc[0]['label'] gets a single value array rather than a scalar.
Like this:
lastprice=stock.iloc[-1]['Close']
Output:
date
2014-02-26 118.2
name:Close, dtype: float64
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