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How does “cat
...nyway: I had the need to create a config file in a directory that required root rights.
The following does not work for that case:
$ sudo cat <<EOF >/etc/somedir/foo.conf
# my config file
foo=bar
EOF
because the redirection is handled outside of the sudo context.
I ended up using this ...
git: switch branch without detaching head
...self =). I regularly use that to create arbitrary branches with arbitrary roots.
– Kent Fredric
Jun 19 '16 at 6:57
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Pass data to layout that are common to all pages
...ting from scratch, you may chose to derive all your models from the common root instead.
– DenNukem
Sep 23 '15 at 23:08
5
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Should I use multiplication or division?
...by the way, it's fun. But fun != readable)
Premature optimization is the root of all evil. Always remember the three rules of optimization!
Don't optimize.
If you are an expert, see rule #1
If you are an expert and can justify the need, then use the following procedure:
Code it unoptimized
de...
python setup.py uninstall
...
To help others: because I'm not root, I install everything in my home. Here is what I did easy_install --user --prefix=$HOME pip. Then I added the following in my PATH: ln -s /home/tflutre/.local/bin/pip ~/bin, ln -s /home/tflutre/.local/bin/pip2.7 ~/bin an...
Difference between $(document.body) and $('body')
.... Though the second expression goes through a top down lookup from the DOM root. You might want to avoid the additional overhead (however minuscule it may be) if you already have document.body object in hand for JQuery to wrap over.
See http://api.jquery.com/jQuery/ #Selector Context
...
Best practices for in-app database migration for Sqlite
... after migration is %d", [self databaseSchemaVersion]);
}
And here's the root view controller code that invokes the migration, using MBProgressHUD to display a progress bezel:
- (void)viewDidAppear {
[super viewDidAppear];
if ([[Database sharedDatabase] userDatabaseNeedsMigration]) {
...
Maven project version inheritance - do I have to specify the parent version?
...ons IMO:
$ mvn versions:set -DgenerateBackupPoms=false
(do that in your root/parent pom folder).
Your POMs are parsed and you're asked which version to set.
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Command to change the default home directory of a user
...it is
In addition to symlink, on more recent distros and filesystems, as root you can also use bind-mount:
mkdir /home/username
mount --bind --verbose /extra-home/username /home/username
This is useful for allowing access "through" the /home directory to subdirs via daemons that are otherwise ...
git-checkout older revision of a file under a new name
...y. The given path will be converted to be relative to the working tree’s root directory. This is most useful to address a blob or tree from a commit or tree that has the same tree structure as the working tree.
Note that <path> here is FULL path relative to the top directory of your ...