大约有 2,500 项符合查询结果（耗时：0.0088秒） [XML]
Undefined reference to `sin` [duplicate]
...gt;?
Because both these functions are implemented as part of the "Single UNIX Specification". This history of this standard is interesting, and is known by many names (IEEE Std 1003.1, X/Open Portability Guide, POSIX, Spec 1170).
This standard, specifically separates out the "Standard C librar...
PDOException SQLSTATE[HY000] [2002] No such file or directory
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I had to add "'unix_socket' => '/Applications/MAMP/tmp/mysql/mysql.sock'" to config/database.php
– Ángel Carlos del Pozo Muela
Jan 31 '18 at 12:23
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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
...使用厂商提供的App进行IO口控制，也可以使用App Inventor 2 编程实现控制IO口电平的高/低，对应LED的开/关。
3、App Inventor 2 开发自己的蓝牙App
主要用到 BlueToothLE 拓展，点此查看中文文档。BLE蓝牙的特点是无需配对，设备被扫描...
What is the exact meaning of Git Bash?
...me; MinGW programs are therefore real Windows programs, with no concept of Unix-style paths or POSIX niceties such as a fork() call
MSYS - is a Bourne Shell command line interpreter system, is used by MinGW (and others), was forked in the past from Cygwin
Cygwin - a Linux like environment, which...
Can the Unix list command 'ls' output numerical chmod permissions?
Is it possible when listing a directory to view numerical unix permissions such as 644 rather than the symbolic output -rw-rw-r--
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Convert one date format into another in PHP
...s to use strtotime() with date(). strtotime() will convert the date into a Unix Timestamp. That Unix Timestamp can then be passed to date() to convert it to the new format.
$timestamp = strtotime('2008-07-01T22:35:17.02');
$new_date_format = date('Y-m-d H:i:s', $timestamp);
Or as a one-liner: ...
Difference between \n and \r?
...ce they're 10 and 13 respectively;-).
But seriously, there are many:
in Unix and all Unix-like systems, \n is the code for end-of-line, \r means nothing special
as a consequence, in C and most languages that somehow copy it (even remotely), \n is the standard escape sequence for end of line (tran...
Command-line Unix ASCII-based charting / plotting tool
Is there a good command-line UNIX charting / graphing / plotting tool out there? I'm looking for something that will plot xy points on an ASCII graph.
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Is there a way to ignore header lines in a UNIX sort?
I have a fixed-width-field file which I'm trying to sort using the UNIX (Cygwin, in my case) sort utility.
12 Answers
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Unix command to prepend text to a file
Is there a Unix command to prepend some string data to a text file?
16 Answers
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