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How to remove the lines which appear on file B from another file A?
...s that match the entire line
-v: print non-matching
-f file: take patterns from the given file
This method is slower on pre-sorted files than other methods, since it is more general. If speed matters as well, see: Fast way of finding lines in one file that are not in another?
Here's a quick bash ...
How can I extract a predetermined range of lines from a text file on Unix?
...
sed -n '16224,16482p;16483q' filename > newfile
From the sed manual:
p -
Print out the pattern space (to the standard output). This command is usually only used in conjunction with the -n command-line option.
n -
If auto-print is not disabled, print t...
What does 'super' do in Python?
...t__. while
super(Child, self).__init__()
means to call a bound __init__ from the parent class that follows Child in the instance's Method Resolution Order (MRO).
If the instance is a subclass of Child, there may be a different parent that comes next in the MRO.
Explained simply
When you writ...
How do I copy a folder from remote to local using scp? [closed]
How do I copy a folder from remote to local host using scp ?
11 Answers
11
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Can I call an overloaded constructor from another constructor of the same class in C#?
Can I call an overloaded constructor from another constructor of the same class in C#?
4 Answers
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How to download and save a file from Internet using Java?
...m fos = new FileOutputStream("information.html");
fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
Using transferFrom() is potentially much more efficient than a simple loop that reads from the source channel and writes to this channel. Many operating systems can transfer bytes directly from...
Git: copy all files in a directory from another branch
How do I copy all files in a directory from another branch? I can list all of the files in that directory by doing
2 Answe...
How to get hosting Activity from a view?
...
I just pulled that source code from the MediaRouter in the official support library and so far it works fine:
private Activity getActivity() {
Context context = getContext();
while (context instanceof ContextWrapper) {
if (context instance...
How can I install MacVim on OS X?
...
Step 1. Install homebrew from here: http://brew.sh
Step 1.1. Run export PATH=/usr/local/bin:$PATH
Step 2. Run brew update
Step 3. Run brew install vim && brew install macvim
Step 4. Run brew link macvim
You now have the latest versions of v...
When is SQLiteOpenHelper onCreate() / onUpgrade() run?
...pplication. Use the application manager or adb uninstall your.package.name from the shell.
Clear application data. Use the application manager.
Increment the database version so that onUpgrade() is invoked. This is slightly more complicated as more code is needed.
For development time schema upgr...