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How can I write a heredoc to a file in Bash script?
...h a command pipeline:
cat <<'EOF' | sed 's/a/b/'
foo
bar
baz
EOF
Output:
foo
bbr
bbz
... or to write the the heredoc to a file using sudo:
cat <<'EOF' | sed 's/a/b/' | sudo tee /etc/config_file.conf
foo
bar
baz
EOF
...
Query EC2 tags from within instance
...escribe-tags --filters Name=resource-id,Values=ec2metadata --instance-id --out=json|jq '.Tags[]| select(.Key == "role")|.Value'
– jolestar
Apr 25 '15 at 2:14
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How to reference the initial commit?
...0 is in fact getting the initial commit though. Just thought I would point out that the latter seems more reliable.
– jbranchaud
Jan 23 '13 at 21:42
1
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OSError: [Errno 2] No such file or directory while using python subprocess in Django
... True or
else the string must simply name the program to be executed without
specifying any arguments.
subprocess.call(crop, shell=True)
or:
import shlex
subprocess.call(shlex.split(crop))
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Firing events on CSS class changes in jQuery
... or removed. In my case for making sure they are not running when scrolled out of view. Sweet!
– BBaysinger
Aug 24 '18 at 20:17
1
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Proper way to catch exception from JSON.parse
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All you need to change for this to be valid is change out JSON.parse(...) for ()=>JSON.parse(...).
– John
Jun 1 '18 at 20:59
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React ignores 'for' attribute of the label element
...velopment build of React, you should have seen a warning in your console about this.
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How do I get NuGet to install/update all the packages in the packages.config?
...anage Packages dialog.
Updates:
2013/07/10 - Updated with information about nuget restore in NuGet 2.7
2014/07/06 - Updated with information about automatic package restore in Visual Studio and brought the answer up to date with other changes to NuGet.
2014/11/21 - Updated with information about ...
How does setting baselineAligned to false improve performance in LinearLayout?
...d:baselineAligned="false" , you're preventing the extra work your app's layout has to do in order to Align its children's baselines; which can obviously increase the performance. (Fewer unnecessary operations on UI => Better performance)
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How many levels of pointers can we have?
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This limit is about how many in a single declaration; it does not impose an upper bound on how much indirection you can achieve via multiple typedefs.
– Kaz
Apr 10 '12 at 11:37
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