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OpenSuSE 安装bpftrace - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...PFTRACE_MAP_KEYS_MAX [default: 4096] max keys in a map
BPFTRACE_CAT_BYTES_MAX [default: 10k] maximum bytes read by cat builtin
BPFTRACE_MAX_PROBES [default: 512] max number of probes
BPFTRACE_LOG_SIZE [default: 409600] log size in bytes
BPFTRACE_NO_US...
How do I remove a key from a JavaScript object? [duplicate]
...http://underscorejs.org/#omit
var thisIsObject= {
'Cow' : 'Moo',
'Cat' : 'Meow',
'Dog' : 'Bark'
};
_.omit(thisIsObject,'Cow'); //It will return a new object
=> {'Cat' : 'Meow', 'Dog' : 'Bark'} //result
If you want to modify the current object, assign the returning object to the c...
Convert String to Uri
...o its standards. For example, try to parse: http://www.google.com/search?q=cat|dog. An exception will be thrown for the vertical bar.
urllib makes it easy to convert a string to a java.net.URI. It will pre-process and escape the URL.
assertEquals("http://www.google.com/search?q=cat%7Cdog",
Ur...
Tool for adding license headers to source files? [closed]
...c # or whatever other pattern...
do
if ! grep -q Copyright $i
then
cat copyright.txt $i >$i.new && mv $i.new $i
fi
done
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Disable password authentication for SSH [closed]
...
# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication no
Uncomment the second line, and, if needed, change yes to no.
Then run
service ssh restart
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Creating a singleton in Python
...hing that works in both Python2 and 3 requires using a slightly more complicated scheme. Since metaclasses are usually subclasses of type type, it's possible to use one to dynamically create an intermediary base class at run time with it as its metaclass and then use that as the baseclass of the pub...
How to send file contents as body entity using cURL
...
If you want to be real fancy you can do: cat file.txt | curl --data "@-" `(< url.txt )` @- tells curl to read from stdin. You could also just use the redirect (< x.txt ) to put in whatever you want. If you're using bash.
– Breedly
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Get key by value in dictionary
... answered Nov 5 '11 at 21:13
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Replace words in a string - Ruby
...r gsub as a plain text substitution can lead to disastrous results:
'mislocated cat, vindicating'.gsub('cat', 'dog')
=> "mislodoged dog, vindidoging"
Regular expressions have word boundaries, such as \b which matches start or end of a word. Thus,
'mislocated cat, vindicating'.gsub(/\bcat\b/, ...
Allow user to set up an SSH tunnel, but nothing else
...say, 5000), but I want to restrict this user as much as possible. (Authentication will be with public/private keypair).
10 ...