大约有 5,200 项符合查询结果（耗时：0.0251秒） [XML]
Grep not as a regular expression
I need to search for a PHP variable $someVar . However, Grep thinks that I am trying to run a regex and is complaining:
6 ...
How do I list all cron jobs for all users?
... d m w user command
09,39 * * * * root [ -d /var/lib/php5 ] && find /var/lib/php5/ -type f -cmin +$(/usr/lib/php5/maxlifetime) -print0 | xargs -r -0 rm
47 */8 * * * root rsync -axE --delete --ignore-errors / /mirror/ >/dev/null
17 1 * * * root ...
How to check if a process id (PID) exists
...
devnull
98.1k2727 gold badges195195 silver badges201201 bronze badges
answered Jun 15 '10 at 9:40
oherralaohe...
Why does Android use Java? [closed]
...
98
Some points:
Java is a known language, developers know it and don't have to learn it
it's har...
Get the current git hash in a Python script
...
98
The git describe command is a good way of creating a human-presentable "version number" of the ...
Row count with PDO
... statements around. What is the best way to get the row count using PDO in PHP? Before using PDO, I just simply used mysql_num_rows .
...
How to trigger a phone call when clicking a link in a web page on mobile phone
...he country code. pay attention to the following example:
<a href="tel:+989123456789">NO Different What it is</a>
For this example, the country code is +98.
Hint: It is so suitable for cellphones, I know tel: prefix calls FaceTime on macOS but on Windows I'm not sure, but I guess it c...
Python dictionary: Get list of values for list of keys
...36 ms ± 60.7 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
2.98 ms ± 142 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
2.7 ms ± 284 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
3.14 ms ± 62.6 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
So,...
GCC dump preprocessor defines
...There will be no output because g++ (revision 4.9.1, defaults to -std=gnu++98) does not enable C++11-features by default. To do so, use
g++ -dM -E -x c++ -std=c++11 /dev/null | fgrep __cpp_alias_templates
which finally yields
#define __cpp_alias_templates 200704
noting that g++ 4.9.1 does supp...
How to style icon color, size, and shadow of Font Awesome Icons
...Awesome insert code -->
<script src="https://use.fontawesome.com/49b98aaeb5.js"></script>
<!-- End -->
<i class="fa fa-thumbs-up fa-5x" aria-hidden="true" style="color:#00cc6a"></i>
<i class="fa fa-thumbs-up fa-4x" aria-hidden="true" style="color:#00cc6a">&...