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How to deal with persistent storage (e.g. databases) in Docker
...DATA2 -v $(pwd):/backup busybox tar xvf /backup/backup.tar
data/
data/sven.txt
# Compare to the original container
$ sudo docker run --rm --volumes-from DATA -v `pwd`:/backup busybox ls /data
sven.txt
Here is a nice article from the excellent Brian Goff explaining why it is good to use the same im...
How to do a PUT request with curl?
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An example PUT following Martin C. Martin's comment:
curl -T filename.txt http://www.example.com/dir/
With -T (same as --upload-file) curl will use PUT for HTTP.
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Access properties file programmatically with Spring?
...inga's implementation if you have something like myFile=${myFolder}/myFile.txt, the literal property value you'll get from the map using the key "myFile" will be ${myFolder}/myFile.txt.
– user4903
Mar 20 '12 at 15:42
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Iterating through directories with Python
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C:/Users/sid/Desktop/test\src\app/cool.txt C:/Users/sid/Desktop/test\src\app/woohoo.txt Ya in the open statement of my code, i think i have to give the absolute path to the file. import os rootdir ='C:/Users/spemmara/Desktop/test/src/app/' for subdir, dirs, fi...
Python: Is it bad form to raise exceptions within __init__?
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The standard library says:
>>> f = file("notexisting.txt")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
IOError: [Errno 2] No such file or directory: 'notexisting.txt'
Also I don't really see any reason why it should be considered bad f...
redirect COPY of stdout to log file from within bash script itself
...) into a named pipe ( >() ) running "tee"
exec > >(tee -i logfile.txt)
# Without this, only stdout would be captured - i.e. your
# log file would not contain any error messages.
# SEE (and upvote) the answer by Adam Spiers, which keeps STDERR
# as a separate stream - I did not want to stea...
Configuring so that pip install can work from github
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If you want to use requirements.txt file, you will need git and something like the entry below to anonymously fetch the master branch in your requirements.txt.
For regular install:
git+git://github.com/celery/django-celery.git
For "editable" install:
-...
Does git return specific return error codes?
...test to fail. This is what I got:
$ git merge newbranch
Auto-merging test.txt
CONFLICT (content): Merge conflict in test.txt
Automatic merge failed; fix conflicts and then commit the result.
$ echo $?
1
Git returns 0 when it merges correctly, as expected.
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Batch equivalent of Bash backticks
...by redirecting the output to a file first. For example:
echo zz > bla.txt
set /p VV=<bla.txt
echo %VV%
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seek() function?
... Example:
So if you have a text file with the following content:
simple.txt
abc
You can jump 1 byte to skip over the first character as following:
fp = open('simple.txt', 'r')
fp.seek(1)
print fp.readline()
>>> bc
Binary file example gathering width :
fp = open('afile.png', 'rb')
...