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scp (secure copy) to ec2 instance without password
... the arguments in the wrong order. This works:
scp -i mykey.pem somefile.txt root@my.ec2.id.amazonaws.com:/
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Unix - create path of folders and file
...dir -p /my/other/path/here/ && touch /my/other/path/here/cpedthing.txt
Note: Previously I recommended usage of ; to separate the two commands but as pointed out by @trysis it's probably better to use && in most situations because in case COMMAND1 fails COMMAND2 won't be executed ei...
Batch files: How to read a file?
...n use the for command:
FOR /F "eol=; tokens=2,3* delims=, " %i in (myfile.txt) do @echo %i %j %k
Type
for /?
at the command prompt. Also, you can parse ini files!
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How do you loop through each line in a text file using a windows batch file?
...s a whole. Here is what I found to work.
for /F "tokens=*" %%A in (myfile.txt) do [process] %%A
The tokens keyword with an asterisk (*) will pull all text for the entire line. If you don't put in the asterisk it will only pull the first word on the line. I assume it has to do with spaces.
For Co...
Import text file as single character string
...t uses the correct size instead of a hard-coded size:
fileName <- 'foo.txt'
readChar(fileName, file.info(fileName)$size)
Note that readChar allocates space for the number of bytes you specify, so readChar(fileName, .Machine$integer.max) does not work well...
...
val() doesn't trigger change() in jQuery [duplicate]
...rigger() or .change(), you can test it below using Chrome or Firefox.
txt.addEventListener('input', function() {
console.log('not called?');
})
$('#txt').val('test').trigger('input');
$('#txt').trigger('input');
$('#txt').change();
<script src="https://cdnjs.cloudflare.com/ajax/libs/...
How to delete a specific line in a file?
...r lines back, except for the line you want to delete:
with open("yourfile.txt", "r") as f:
lines = f.readlines()
with open("yourfile.txt", "w") as f:
for line in lines:
if line.strip("\n") != "nickname_to_delete":
f.write(line)
You need to strip("\n") the newline chara...
Extract a regular expression match
...gregexpr’ and ‘regexec’.
So this will work, and is fairly simple:
txt <- "aaa12xxx"
regmatches(txt,regexpr("[0-9]+",txt))
#[1] "12"
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杭州科技业为中国经济点亮未来 - 资讯 - 清泛网 - 专注C/C++及内核技术
...前员工数量近13000名。目前围绕阿里巴巴已经出现了一套完整的生态系统。这里曾经是浙江中小型企业的基地重点业务是出口，但是现在风险投资成为当地的新兴产业。
杭州并不是唯一一个转型势头良好的城市。深圳的服务业...
携程瘫痪事件确认系员工误操作所致 - 资讯 - 清泛网 - 专注C/C++及内核技术
...数据和数据库并未受到此次事件的影响，用户订单数据也完整无损，请用户放心并继续使用携程网站及App。
3、如何杜绝此类事件的再次发生？
携程在系统上做了改进，规范并杜绝技术人员错误删除生产服务器上代码的操作。
...