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Can linux cat command be used for writing text to file?
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If you need to use double quotes in your text, encompass the whole thing in single quotes. This is useful for .json and the likes, e.g. echo '{"info1": "123456"}' > info.json
– bkd
No...
jQuery to loop through elements with the same class
...onial and I want to use jquery to loop through them to check for each div if a specific condition is true. If it is true, it should perform an action.
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【phpcms v9】PC站和手机站 全静态手机移动站方法 - 更多技术 - 清泛网 - ...
...aredirect(“http://m.aiguoxin.net”);</script>，栏目页的这样写
{if $page==”” or $page==”1″}
<script type=”text/javascript”>uaredirect(“http://m.aiguoxin.net/{$catdir}/index.html”);</script>
{else}
<script type=”text/javascript”>uaredirect(“http://m.aiguoxin.ne...
What are .a and .so files?
...ically linked i.e when you compile your program with -c option in gcc. So, if there's any change in library, you need to compile and build your code again.
The advantage of .so (shared object) over .a library is that they are linked during the runtime i.e. after creation of your .o file -o option ...
Inconsistent Accessibility: Parameter type is less accessible than method
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If sounds like the type ACTInterface is not public, but is using the default accessibility of either internal (if it is top-level) or private (if it is nested in another type).
Giving the type the public modifier would fix i...
Get the date (a day before current time) in Bash
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if you have GNU date and i understood you correctly
$ date +%Y:%m:%d -d "yesterday"
2009:11:09
or
$ date +%Y:%m:%d -d "1 day ago"
2009:11:09
s...
lsof survival guide [closed]
...iven port:
lsof -iTCP -i :port
lsof -i :22
To show connections to a specific host, use @host
lsof -i@192.168.1.5
Show connections based on the host and the port using @host:port
lsof -i@192.168.1.5:22
grepping for LISTEN shows what ports your system is waiting for connections on:
lsof -i...
Exporting a function in shell
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The export -f feature is specific to Bash:
parent
#!/bin/bash
plus1 () { echo $(($1 + 1)); }
echo $(plus1 8)
export -f plus1
./child 14 21
child
#!/bin/bash
echo $(plus1 $(($1 * $2)) )
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What is the difference between MySQL, MySQLi and PDO? [closed]
What is the difference between MySQL, MySQLi and PDO ?
4 Answers
4
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Execute bash script from URL
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bash <(curl -s http://mywebsite.com/myscript.txt)
It may be clearer if you look at the output of echo <(cat /dev/null)
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