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grep exclude multiple strings
...is in filename.txt:
abc
def
ghi
jkl
grep command using -E option with a pipe between tokens in a string:
grep -Ev 'def|jkl' filename.txt
prints:
abc
ghi
Command using -v option with pipe between tokens surrounded by parens:
egrep -v '(def|jkl)' filename.txt
prints:
abc
ghi
...
Can't connect to local MySQL server through socket homebrew
...
The file /tmp/mysql.sock is probably a Named-Pipe, since it's in a temporary folder. A named pipe is a Special-File that never gets permanently stored.
If we make two programs, and we want one program to send a message to another program, we could create a text file. ...
Proxy with express.js
...in any way you want
var newurl = 'http://google.com/';
request(newurl).pipe(res);
});
I hope this helps, took me a while to realize that I could do this :)
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转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
...m_mysql]# make
然后报错“make: *** [dynamic/pam_mysql.o] Error 1”无法尽心，没有生成pam_mysql.so模块。
A:
装mysql的devel和shared包吧，对应版本的，用mysql.com上面的就行
QUOTE:
Q：
安装POSTFIX2.2.7出错
[root@mail postfix...
How does the Windows Command Interpreter (CMD.EXE) parse scripts?
...ase 5) Delayed Expansion: Only if delayed expansion is enabled
Phase 5.3) Pipe processing: Only if commands are on either side of a pipe
Phase 5.5) Execute Redirection:
Phase 6) CALL processing/Caret doubling: Only if the command token is CALL
Phase 7) Execute: The command is executed
Here a...
Getting root permissions on a file inside of vi? [closed]
... Can you explain how this works? I looked up tee and see it's a Unix pipe command, and ! inserts a shell command. Is the :w writing to standard out, which gets piped by tee?
– Eric Hu
Sep 10 '12 at 19:37
...
How can I run a PHP script in the background after a form is submitted?
... in the background by using proc_open:
$descriptorspec = array(
array('pipe', 'r'), // stdin
array('file', 'myfile.txt', 'a'), // stdout
array('pipe', 'w'), // stderr
);
$proc = proc_open('php email_script.php &', $descriptorspec, $pipes);
The & being...
How do I get a div to float to the bottom of its container?
... zero width strut element above the float right, then sizing the strut (or pipe) according to parent height minus floated child's height.
Before js kicks in I am using the position absolute approach, which works but allows text flow behind. Therefore I switch to position static to enable the strut...
婚庆O2O：领跑的企业也就只走到B轮 - 资讯 - 清泛网 - 专注C/C++及内核技术
...哪个，婚礼筹备什么节点该干什么，仍是一头雾水。新人登录各种五花八门的网站平台，下载各种app，看到的仍旧是眼花缭乱的各种优惠促销的商家，酒店、婚礼策划、婚纱摄影、婚品等。
而且，但凡一个新模式出来了，立马...
String concatenation in MySQL
...n enable string concatenation with the || operator in MySQL by setting the PIPES_AS_CONCAT SQL mode.
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