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How to import multiple .csv files at once?
...r looping construct in R you could merge your CSV files into one file.
In Unix, if the files had no headers, then its as easy as:
cat *.csv > all.csv
or if there are headers, and you can find a string that matches headers and only headers (ie suppose header lines all start with "Age"), you'd ...
Where are $_SESSION variables stored?
... by PHP's session.save_path configuration. Usually this is /tmp on a Linux/Unix system. Use the phpinfo() function to view your particular settings if not 100% sure by creating a file with this content in the DocumentRoot of your domain:
<?php
phpinfo();
?>
Here is the link to the PHP d...
How can I exclude all “permission denied” messages from “find”?
...mpliant find features; while bash itself is not part of POSIX, most modern Unix platforms come with it, making this solution widely portable:
find . > files_and_folders 2> >(grep -v 'Permission denied' >&2)
Note: There's a small chance that some of grep's output may arrive after f...
(grep) Regex to match non-ASCII characters?
...-l to find the number. It doesn't have to be grep; I can use any standard Unix regular expression , like Perl , sed , AWK , etc.
...
Turning multi-line string into single comma-separated
...
Remember to handle Windows newlines (eg using dos2unix) if there are any CRLFs in the string.
– Bowi
Jul 2 at 15:19
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List files recursively in Linux CLI with path relative to the current directory
...tion , but I want to include the path relative to the current directory in unix. If I do the following:
14 Answers
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How does libuv compare to Boost/ASIO?
... yes Asio
Sending: yes no
IPC:
UNIX Domain Sockets: yes Asio
Windows Named Pipe: yes Asio
Process Management:
Detaching: yes Process
I/O Pipe: yes Process
Spawning: ...
How to prevent caching of my Javascript file? [duplicate]
...
You'd better put the "LastWriteTimeUTC" unix-timestamp in there, that way it stays cached as long as the script doesn't change.
– Stefan Steiger
Sep 23 '15 at 13:11
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App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
...协调地址和端口。然后可以双向传输数据。
注意：
在 UNIX 系统上，系统保留 1023（含）以下的端口号。这些限制已保留用于 LINUX，因此也用于 Android。使用这些端口号需要 root 授权。这同样适用于 Apple 的 iOS。
因此，此扩展无...
Select mySQL based only on month and year
... 'SELECT *
FROM projects
WHERE Date BETWEEN FROM_UNIXTIME(%u) AND FROM_UNIXTIME(%u)',
$start,
$end
);
EDIT
Forgot the Unix timestamp conversion.
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