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linux 通过bind下搭建DNS Server - 更多技术 - 清泛网 - 专注C/C++及内核技术
...med/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
query-source port 53;
query-source-v6 port 53;
allow-query { any; };
};
logging {
channel default_debug {
...
How to duplicate sys.stdout to a log file?
...s.fdopen(sys.stdout.fileno(), 'w', 0)
tee = subprocess.Popen(["tee", "log.txt"], stdin=subprocess.PIPE)
os.dup2(tee.stdin.fileno(), sys.stdout.fileno())
os.dup2(tee.stdin.fileno(), sys.stderr.fileno())
print "\nstdout"
print >>sys.stderr, "stderr"
os.spawnve("P_WAIT", "/bin/ls", ["/bin/ls"],...
How to call Android contacts list?
... implements OnClickListener {
private Button btn = null;
private TextView txt = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn = (Button) findViewById(R.id.button1);
txt = (TextView) findView...
理解Python的 with 语句 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ines of: 如果不用with语句，代码如下：
file = open("/tmp/foo.txt")
data = file.read()
file.close()
There are two annoying things here. First, you end up forgetting to close the file handler. The second is how to handle exceptions that may occur once the file handler has been obtaine...
OS X: equivalent of Linux's wget
...instance Ubuntu on an AWS instance, use:
wget http://example.com/textfile.txt
On a Mac, i.e. for local development, use this:
curl http://example.com/textfile.txt -o textfile.txt
The -o parameter is required on a Mac for output into a file instead of on screen. Specify a different target name ...
How to access test resources in Scala?
...); is to obtain it's path via:
val path = getClass.getResource("/testData.txt").getPath
val file = new File(path)
as has been pointed out in Scala get file path of file in resources folder
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How to ignore certain files in Git
...
1) Create a .gitignore file. To do that, you just create a .txt file and change the extension as follows:
Then you have to change the name, writing the following line in a cmd window:
rename git.txt .gitignore
Where git.txt is the name of the file you've just created.
Then you...
How to get line count of a large file cheaply in Python?
...ne line, probably pretty fast:
num_lines = sum(1 for line in open('myfile.txt'))
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为什么你有10年经验，但成不了专家？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...商业分析感兴趣，看几本商业分析的有趣书籍（比如我常推荐的《好战略坏战略》），这和我把『扬长避短』『行动协同』等基本原则练到吐，并逼迫自己一天诊断3个困难的商业案例是两码事。
同样，业余歌手练习歌曲的时...
How to keep a git branch in sync with master
...bile branch: D -> E
Now, suppose commit B made some changes to file a.txt and commit D also made some changes to a.txt. Let us have a look at the impact of each operation of merging now,
git checkout master //Switches to master branch
git pull // Get the commits you don't have. May be your fel...