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Does Redis persist data?
...cheduler global snapshooting and AOF writes update to an apappend-only log file similar to MySql.
You can use one of them or both.When Redis reboots,it constructes data from reading the RDB file or AOF file.
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What is the cleanest way to ssh and run multiple commands in Bash?
...st /bin/bash << EOF
touch "/tmp/${NAME}"
EOF
and it would create a file on the destination otherhost with the name of whatever you'd assigned to $NAME. Other rules about shell script quoting also apply, but are too complicated to go into here.
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mysql :: insert into table, data from another table?
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INSERT INTO preliminary_image (style_id,pre_image_status,file_extension,reviewer_id,
uploader_id,is_deleted,last_updated)
SELECT '4827499',pre_image_status,file_extension,reviewer_id,
uploader_id,'0',last_updated FROM preliminary_image WHERE style_id=4827488
Analysis
We can us...
Working with UTF-8 encoding in Python source [duplicate]
...r needed in Python 3, where utf-8 is already the default for Python source files. See python.org/dev/peps/pep-3120
– Jonathan Hartley
Aug 10 '16 at 21:06
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ViewController respondsToSelector: message sent to deallocated instance (CRASH)
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Use Instruments to track down deallocated instance errors. Profile your application (Cmd ⌘+I) and choose Zombies template. After your application is running, try to crash it. You should get something like that:
Click on the arrow next to address in the popover to show object that w...
return statement vs exit() in main()
...royed. Often this has no implications, but sometimes it does, like closing files (surely you want all your data flushed to disk?).
Note that static objects will be cleaned up even if you call exit(). Finally note, that if you use abort(), no objects will be destroyed. That is, no global objects, no...
How does this site infecting script work?
...framework, which I seldom do, I make sure to rename most if not the entire file structure to rid myself of those pesky loopholes/back-doors. At the very least you can rename directories which will throw off most bots, but my way is to completely eliminate references that give clues as to the nature ...
Get a list of all git commits, including the 'lost' ones
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How I solve this problem? Use git fsck and logging!
First create a file containing lost (unreachable) commits and blobs. (NOTE: if you did something like git gc then it will garbage collect all of they commits and you won't find them here!)
$git fsck --lost-found > lost_found.commits
T...
Using GPU from a docker container?
...created a docker image that has the cuda drivers pre-installed. The dockerfile is available on dockerhub if you want to know how this image was built.
You'll want to customize this command to match your nvidia devices. Here's what worked for me:
$ sudo docker run -ti --device /dev/nvidia0:/dev/...
Compiling C++11 with g++
... are invoking g++ from the command line (terminal):
$ g++ -std=c++11 your_file.cpp -o your_program
or
$ g++ -std=c++0x your_file.cpp -o your_program
if the above doesn't work.
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