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While loop to test if a file exists in bash
...an do this:
file=/tmp/list.txt
while [ ! -f "$file" ]
do
inotifywait -qqt 2 -e create -e moved_to "$(dirname $file)"
done
This reduces the delay introduced by sleep while still polling every "x" seconds. You can add more events if you anticipate that they are needed.
...
正则表达式 30 分钟入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...输入的内容时非常有用，比如一个网站如果要求你填写的QQ号必须为5位到12位数字时，可以使用：^\d{5,12}$。
这里的{5,12}和前面介绍过的{2}是类似的，只不过{2}匹配只能不多不少重复2次，{5,12}则是重复的次数不能少于5次，不能...
Jackson overcoming underscores in favor of camel-case
...
one qq: when i use snake_case naming strategy will the json files with underscores be deserialized to camel case?
– Ram Patra
Aug 5 '16 at 23:28
...
How to mkdir only if a directory does not already exist?
...
The old tried and true
mkdir /tmp/qq >/dev/null 2>&1
will do what you want with none of the race conditions many of the other solutions have.
Sometimes the simplest (and ugliest) solutions are the best.
...
What is the difference between the add and offer methods in a Queue in Java?
... q.offer(b); boolean is6 = q.offer(b); System.out.println("qq::"+q);
– Raj
Nov 20 '18 at 12:15
Thanks,...
Vim: insert the same characters across multiple lines
...d would then repeat it.
Put your cursor on the first letter in name.
Hit qq to start recording into the q buffer.
Hit i to go into insert mode, type vector_, and then hit Esc to leave insert mode.
Now hit 0 to go back to the beginning of the line.
Now hit j to go down.
Now hit q again to stop reco...
jQuery scroll to element
...ited Jul 8 '18 at 14:48
php_nub_qq
11.9k1717 gold badges5454 silver badges117117 bronze badges
answered Jul 13 '11 at 9:52
...
Format number to always show 2 decimal places
...
jsfiddle.net/Artistan/qq895bnp/28 there are "times" when toFixed will work, but it is quite inconsistent. :)
– Artistan
Jul 19 '17 at 17:06
...
Making git auto-commit
...nd git commit all changes as they happen
#
while true; do
inotifywait -qq -e CLOSE_WRITE ~/.calendar/calendar
cd ~/.calendar; git commit -a -m 'autocommit on change'
done
This could be generalized to wait on a list of files and/or directories, and the corresponding inotifywait processes, a...
90后创业四年:曾经觉得不公 后来愿赌服输 - 资讯 - 清泛网 - 专注C/C++及内核技术
...陌生人一旦成了熟人，他们的第一句话是我们加微信或加QQ，然后这个用户就流失了。中国最大的陌生人社交应用陌陌做本地化的群组，也是为了形成一个闭环。2014年我们做陌生人私密轻社交应用“萌萌搭”，做了两个月发现不...