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git produces Gtk-WARNING: cannot open display
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mysql command for showing current configuration variables
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224
What you are looking for is this:
SHOW VARIABLES;
You can modify it further like any query:...
Can you define aliases for imported modules in Python?
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answered Apr 1 '09 at 17:34
vartecvartec
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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
...on.
– Jonathan Leffler
Aug 1 '13 at 4:03
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Technically, $(echo foo) creates a command substitutio...
Difference between Django's annotate and aggregate methods?
...> Book.objects.aggregate(average_price=Avg('price'))
{'average_price': 34.35}
Returns a dictionary containing the average price of all books in the queryset.
Annotation
>>> q = Book.objects.annotate(num_authors=Count('authors'))
>>> q[0].num_authors
2
>>> q[1].num_a...
How to increase the maximum number of opened editors in IntelliJ?
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404
Settings | Editor | General | Editor Tabs | Tab limit.
You may also want to increase the re...
How do I show a MySQL warning that just happened?
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zombatzombat
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Why are Perl 5's function prototypes bad?
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Passing arguments with spaces between (bash) script
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$*, unquoted, expands to two words. You need to quote it so that someApp receives a single argu...
How can I extract a good quality JPEG image from a video file with ffmpeg?
... the default is -qmin 2).
To output a series of images:
ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
To output a single image at ~60 seconds duration:
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
This ...