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Shell - Write variable contents to a file
...
Use the echo command:
var="text to append";
destdir=/some/directory/path/filename
if [ -f "$destdir" ]
then
echo "$var" > "$destdir"
fi
The if tests that $destdir represents a file.
The > appends the text after truncating the ...
Cannot set some HTTP headers when using System.Net.WebRequest
...
If you need the short and technical answer go right to the last section of the answer.
If you want to know better, read it all, and i hope you'll enjoy...
I countered this problem too today, and what i discovered today is that:
the above ans...
How to make Git “forget” about a file that was tracked but is now in .gitignore?
...e you need to remove it from the index. This can be achieved with this command.
git rm --cached <file>
If you want to remove a whole folder, you need to remove all files in it recursively.
git rm -r --cached <folder>
The removal of the file from the head revision will happen on the...
What's Up with Logging in Java? [closed]
... the integrated solution); especially valid if you're an API/Framework/OSS and you rely on other packages that use Commons Logging.
Commons Logging because you don't want to "lock down" to a particular logging framework (so instead you lock down to what Commons Logging gives you instead) - I don't t...
How to comment and uncomment blocks of code in the Office VBA Editor
... editor, go to View, Toolbars, Customise... or right click on the tool bar and select Customise...
Under the Commands tab, select the Edit menu on the left.
Then approximately two thirds of the way down there's two icons, Comment Block and Uncomment Block.
Drag and drop these onto your toolbar an...
How do I get the color from a hexadecimal color code using .NET?
...ompatible with css rgba for web design.
– Siddharth Pandey
Apr 17 '14 at 8:14
2
@Yoda The first t...
What is the most efficient way of finding all the factors of a number in Python?
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The reduce(list.__add__, ...) is taking the little lists of [fac1, fac2] and joining them together in one long list.
The [i, n/i] for i in range(1, int(sqrt(n)) + 1) if n % i == 0 returns a pair of factors if the remainder when you divide n by the smaller one is zero (it doesn't need to check the...
Throwing exceptions from constructors
...ing a debate with a co-worker about throwing exceptions from constructors, and thought I would like some feedback.
10 Answe...
Finish an activity from another activity
...= "singleInstance"
When the user clicks new, do FirstActivity.fa.finish(); and call the new Intent.
When the user clicks modify, call the new Intent or simply finish activity B.
FIRST WAY
In your first activity, declare one Activity object like this,
public static Activity fa;
onCreate()
{
f...
Programmatically generate video or animated GIF in Python?
...d not using images2gif from visvis because it has problems with PIL/Pillow and is not actively maintained (I should know, because I am the author).
Instead, please use imageio, which was developed to solve this problem and more, and is intended to stay.
Quick and dirty solution:
import imageio
im...