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How to switch a user per task or set of tasks?
...ve privilege escalation. You can apply them to an entire play or playbook, set them in an included playbook, or set them for a particular task.
- name: checkout repo
git: repo=https://github.com/some/repo.git version=master dest={{ dst }}
become: yes
become_user: some_user
You can use becom...
Scrolling down both parts of a split-window at the same time in Vim
...
See the documentation for scroll-binding. You'll need to set this for each window that you want bound (e.g. a minimum of 2)
If you're comparing 2 files, however, vimdiff may be of more use
share
|...
add column to mysql table if it does not exist
... database()
and COLUMN_NAME = 'original_data'
AND table_name = 'mytable';
set @query = IF(@exist <= 0, 'alter table intent add column mycolumn4 varchar(2048) NULL after mycolumn3',
'select \'Column Exists\' status');
prepare stmt from @query;
EXECUTE stmt;
...
UITableView, Separator color where to set?
I have added a UITableView in IB and set the "delegate" and "datasource" and all is working well. What I wanted to do next was change the separator color, but the only way I could find to do this was to add the method to one of the delegate callbacks, is there a better place I should put this?
...
plot a circle with pyplot
...(fig.gca() returns the current axes), and since the limits have never been set, they defaults to an x and y range from 0 to 1.
Here's a continuation of the example, showing how units matter:
circle1 = plt.Circle((0, 0), 2, color='r')
# now make a circle with no fill, which is good for hi-lighting ...
How do you set the text in an NSTextField?
I'm trying to set the text in an NSTextField, but the -setStringValue: and -setTitleWithMnemonic: methods are not working. Any ideas?
...
How to exit pdb and allow program to continue?
...n, only stop when a breakpoint is encountered", so you've got a breakpoint set somewhere. To remove the breakpoint (if you inserted it manually):
(Pdb) break
Num Type Disp Enb Where
1 breakpoint keep yes at /path/to/test.py:5
(Pdb) clear 1
Deleted breakpoint 1
(Pdb) continue
Or, i...
How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...ou can draw shapes with opacity) if you draw with primitive shapes you can set fill and stroke color with alpha to define the transparency. As far as I have concluded right now, this does not seem to affect image drawing.
//works with shapes but not with images
ctx.fillStyle = "rgba(255, 255, 255,...
Add new field to every document in a MongoDB collection
...
Same as the updating existing collection field, $set will add a new fields if the specified field does not exist.
Check out this example:
> db.foo.find()
> db.foo.insert({"test":"a"})
> db.foo.find()
{ "_id" : ObjectId("4e93037bbf6f1dd3a0a9541a"), "test" : "a" }
...
How to create a shared library with cmake?
...lib SHARED
sources/animation.cpp
sources/buffers.cpp
[...]
)
Set VERSION property (optional but it is a good practice):
set_target_properties(mylib PROPERTIES VERSION ${PROJECT_VERSION})
You can also set SOVERSION to a major number of VERSION. So libmylib.so.1 will be a symlink to l...