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Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...! bin shcd ~mkdir shell_tutcd shell_tutfor ((i=0; i<10; i++)); do touch test_$i.txt...
什么是Shell脚本
示例
看个例子吧：
#!/bin/sh
cd ~
mkdir shell_tut
cd shell_tut
for ((i=0; i<10; i++)); do
touch test_$i.txt
done
示例解释
第1行：指定脚本解释器...
How can I get a count of the total number of digits in a number?
...
@Puterdo Borato: my performance test actually showed that your method is faster when the number of digits are < 5. Pass that, Steve's Math.floor is faster.
– stack247
Apr 7 '15 at 22:56
...
OAuth: how to test with local URLs?
I am trying to test OAuth buttons, but they all (Facebook, Twitter, LinkedIn) come back with errors that seem to signal that I can not test or use them from a local URL.
...
How to create a static library with g++?
...de. I have header.cpp , header.hpp . I would like to create header.a . Test the header.a in test.cpp . I am using g++ for compiling.
...
“Cannot connect to iTunes Store” in-app purchases
I am having problems testing my in-app purchases. I get back valid product identifiers, but upon purchase I receive the dreaded "Cannot connect to iTunes Store". Interesting thing is that restore purchases seems to work - iTunes login pops up.
...
NodeJS: How to get the server's port?
...tory structure from express command:
alfred@alfred-laptop:~/node$ express test4
create : test4
create : test4/app.js
create : test4/public/images
create : test4/public/javascripts
create : test4/logs
create : test4/pids
create : test4/public/stylesheets
create : test4/public...
Do I need dependency injection in NodeJS, or how to deal with …?
...ut anything to achieve what you want. This comes in handy when it comes to testing.
Behold my very lame contrived example.
MyClass.js:
var fs = require('fs');
MyClass.prototype.errorFileExists = function(dir) {
var dirsOrFiles = fs.readdirSync(dir);
for (var d in dirsOrFiles) {
i...
How to trim whitespace from a Bash variable?
...variable containing leading, trailing, and intermediate whitespace:
FOO=' test test test '
echo -e "FOO='${FOO}'"
# > FOO=' test test test '
echo -e "length(FOO)==${#FOO}"
# > length(FOO)==16
How to remove all whitespace (denoted by [:space:] in tr):
FOO=' test test test '
FOO_NO_WHITESP...
What is Mocking?
...word is something made as an imitation.
Mocking is primarily used in unit testing. An object under test may
have dependencies on other (complex) objects. To isolate the behavior
of the object you want to replace the other objects by mocks that
simulate the behavior of the real objects. This is usef...
Regex to test if string begins with http:// or https://
...new RegExp("^(http|https)://", "i");
var str = "My String";
var match = re.test(str);
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