大约有 6,000 项符合查询结果（耗时：0.0172秒） [XML]
Is there a way for multiple processes to share a listening socket?
... normal stream socket that you can use to handle the client's request. The OS manages the queue of incoming connections behind the scenes.
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sed in-place flag that works both on Mac (BSD) and Linux
...backups that works both on Linux and Mac? While the BSD sed shipped with OS X seems to need sed -i '' … , the GNU sed Linux distributions usually come with interprets the quotes as empty input file name (instead of the backup extension), and needs sed -i … instead.
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Split comma-separated strings in a column into separate rows
...me number of strings. i.e. data.table(id= "X21", a = "chr1;chr1;chr1", b="123;133;134",c="234;254;268") becoming data.table(id = c("X21","X21",X21"), a=c("chr1","chr1","chr1"), b=c("123","133","134"), c=c("234","254","268")) ?
– Reilstein
Jan 19 '19 at 1:39
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What's an easy way to read random line from a file in Unix command line?
... package that does exactly what you want, though not available in all distros. On its home page it actually recommends the use of shuf instead (which didn't exist when it was created, I believe). shuf is part of the GNU coreutils, rl is not.
rl -c 1 $FILE
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Insert a line at specific line number with sed or awk
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OS X / macOS / FreeBSD sed
The -i flag works differently on macOS sed than in GNU sed.
Here's the way to use it on macOS / OS X:
sed -i '' '8i\
8 This is Line 8' FILE
See man 1 sed for more info.
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How to stop app that node.js express 'npm start'
... provides for a stop script too:
npm help npm-scripts
prestop, stop, poststop: Run by the npm stop command.
Set one of the above in your package.json, and then use npm stop
npm help npm-stop
You can make this really simple if you set in app.js,
process.title = myApp;
And, then in scri...
Python argparse mutual exclusive group
... answered Dec 28 '14 at 10:38
Oz123Oz123
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How to fix a locale setting warning from Perl?
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Your OS doesn't know about en_US.UTF-8.
You didn't mention a specific platform, but I can reproduce your problem:
% uname -a
OSF1 hunter2 V5.1 2650 alpha
% perl -e exit
perl: warning: Setting locale failed.
perl: warning: Please...
How can I efficiently download a large file using Go?
...d via http (error checks omitted for brevity):
import ("net/http"; "io"; "os")
...
out, err := os.Create("output.txt")
defer out.Close()
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resp, err := http.Get("http://example.com/")
defer resp.Body.Close()
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n, err := io.Copy(out, resp.Body)
The http.Response's Body is a Reader, so you can ...
Seeing escape characters when pressing the arrow keys in python shell
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On OSX with brew, all I had to do was brew reinstall python3
– Ranhiru Jude Cooray
Sep 16 '17 at 4:01
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