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Identifying and removing null characters in UNIX
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130
I’d use tr:
tr < file-with-nulls -d '\000' > file-without-nulls
If you are wonderin...
Run cron job only if it isn't already running
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16 Answers
16
Active
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What is the easiest way to ignore a JPA field during persistence?
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edited Dec 20 '13 at 7:14
Andrey Atapin
6,69433 gold badges2525 silver badges3434 bronze badges
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How can I use Homebrew to install both Python 2 and 3 on Mac?
...utomatically for Bash upon startup, add that line to your ~/.bash_profile. 1
Usage:
Once you have installed pyenv and activated it, you can install different versions of python and choose which one you can use. Example:
$ pyenv install 2.7.5
You can check the versions you have installed with:
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What are the obj and bin folders (created by Visual Studio) used for?
I created a new project in Visual Studio 2010 and noticed that there are now two new folders named obj and bin in my project directory.
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Does name length impact performance in Redis?
... long.
The example key you give is for a set, set lookup methods are O(1). The more complex operations on a set (SDIFF, SUNION, SINTER) are O(N). Chances are that populating $userId was a more expensive operation than using a longer key.
Redis comes with a benchmark utility called redis-benc...
Bash: Strip trailing linebreak from output
...ect everything except the last byte. This should be quite quick:
head -c -1 log.txt
Also, for completeness, you can quickly check where your newline (or other special) characters are in your file using 'cat' and the 'show-all' flag. The dollar sign character will indicate the end of each line:
c...
Entity Framework Code First - two Foreign Keys from same table
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answered Apr 5 '11 at 22:23
Ladislav MrnkaLadislav Mrnka
345k5656 gold badges638638 silver badges653653 bronze badges
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What to do with branch after merge
I had two branches: master and branch1 . I just merged branch1 back into master and I'm done with that branch. Should I delete it or just let it sit around? Will deleting it cause any loss of data?
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