大约有 1,832 项符合查询结果（耗时：0.0139秒） [XML]
Increasing the maximum number of TCP/IP connections in Linux
... this does not conflict with the protocols that you would use for the application that needs these sockets. Make sure to read post "Coping with the TCP TIME-WAIT" from Vincent Bernat to understand the implications. The net.ipv4.tcp_tw_recycle option is quite problematic for public-facing servers as ...
Linux: compute a single hash for a given folder & contents?
...
I found cat | sha1sum to be considerably faster than sha1sum | sha1sum. YMMV, try each of these on your system: time find path/to/folder -type f -print0 | sort -z | xargs -0 sha1sum | sha1sum; time find path/to/folder -type f -print0...
How I can I lazily read multiple JSON values from a file/stream in Python?
...dbye" : 1 } 1 2 {
} 2
9 78
4 5 { "animals" : [ "dog" , "lots of mice" ,
"cat" ] }
""")
of.close()
// open & stream the json
f = open("test.json","r")
for o in streamingiterload(f.readlines()):
print o
f.close()
I get these results (and if you turn on that debug line, you'll see it pulls in...
Is there something like Annotation Inheritance in java?
... return annotation;
}
}
}
}
catch (Exception ex) {
handleIntrospectionFailure(clazz, ex);
return null;
}
for (Class<?> ifc : clazz.getInterfaces()) {
A annotation = findAnnotation(ifc, annotationType, visited);
...
String concatenation: concat() vs “+” operator
...Firstly, there's a slight difference in semantics. If a is null, then a.concat(b) throws a NullPointerException but a+=b will treat the original value of a as if it were null. Furthermore, the concat() method only accepts String values while the + operator will silently convert the argument to a Str...
How to rsync only a specific list of files?
..., putting them directly on the command line instead:
# rsync -avP -e ssh `cat deploy/rsync_include.txt` root@0.0.0.0:/var/www/
This is assuming, however, that your list isn't so long that the command line length will be a problem and that the rsync_include.txt file contains just real paths (i.e. ...
Why is my git repository so big?
... sed -n $(git rev-list --objects --all | \
cut -f1 -d' ' | \
git cat-file --batch-check | \
grep blob | \
sort -n -k 3 | \
tail -n40 | \
while read hash type size; do
echo -n "-e s/$hash/$size/p ";
done) | \
sort -n -k1
...
89076 images/screenshots/pro...
When do Java generics require
...extend T. If the List contains Animals, the List can contain both Dogs and Cats (both Animals). Dogs have a property "woofVolume" and Cats have a property "meowVolume." While we might like to sort based upon these properties particular to subclasses of T, how can we expect this method to do that? A ...
Select random lines from a file
... sort actually sorts identical lines together, so if you may have duplicate lines and you have shuf (a gnu tool) installed, it's better to use it for this.
– Kevin
Feb 12 '12 at 3:59
...
Create a tar.xz in one command
...p2 > some-dir.tar.bz2
Decompressing is also quite straightforward:
xzcat tarball.tar.xz | tar x
bzcat tarball.tar.bz2 | tar x
zcat tarball.tar.gz | tar x
If you have only tar archive, you can use cat:
cat archive.tar | tar x
If you need to list the files only, use tar t.
...