大约有 40,000 项符合查询结果（耗时：0.0333秒） [XML]
Select random lines from a file
...d it in 0.047 seconds
$ time ./powershuf.py -n 10 --file lines_78000000000.txt > /dev/null
./powershuf.py -n 10 --file lines_78000000000.txt > /dev/null 0.02s user 0.01s system 80% cpu 0.047 total
The reason it is so fast, well I don't read the whole file and just move the file pointer 10 ...
sed or awk: delete n lines following a pattern
...attern (including the line with the pattern):
sed -e '/pattern/,+5d' file.txt
To delete 5 lines after a pattern (excluding the line with the pattern):
sed -e '/pattern/{n;N;N;N;N;d}' file.txt
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How to really read text file from classpath in Java
...oader()
.getResourceAsStream("SomeTextFile.txt");
// From Class, the path is relative to the package of the class unless
// you include a leading slash, so if you don't want to use the current
// package, include a slash like this:
InputStream in = this.getClass().get...
Bash Script: count unique lines in file
...can use the uniq command to get counts of sorted repeated lines:
sort ips.txt | uniq -c
To get the most frequent results at top (thanks to Peter Jaric):
sort ips.txt | uniq -c | sort -bgr
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Reading a resource file from within jar
...tResourceAsStream:
InputStream in = getClass().getResourceAsStream("/file.txt");
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
As long as the file.txt resource is available on the classpath then this approach will work the same way regardless of whether the file.txt reso...
机器视觉成争夺焦点 应用场景将加速拓展 - 资讯 - 清泛网 - 专注C/C++及内核技术
...息，处理并加以理解，最终用于实际检测、测量和控制。完整的机器视觉系统一般包括光源、镜头、相机、图像采集卡、图像处理单元、核心软件、监视器、通讯以及输入输出单元等。
相比于人眼观测，机器视觉具有自动化、...
How to create and write to a txt file using VBA
...extToFile()
Dim filePath As String
filePath = "C:\temp\MyTestFile.txt"
' The advantage of correctly typing fso as FileSystemObject is to make autocompletion
' (Intellisense) work, which helps you avoid typos and lets you discover other useful
' methods of the FileSystemObject
...
AsyncTask Android example
...ng.
See these lines where you are later updating your TextView:
TextView txt = findViewById(R.id.output);
txt.setText("Executed");
Put them in onPostExecute().
You will then see your TextView text updated after the doInBackground completes.
I noticed that your onClick listener does not check t...
Is there a way to make mv create the directory to be moved to if it doesn't exist?
...about this one-liner (in bash):
mkdir --parents ./some/path/; mv yourfile.txt $_
Breaking that down:
mkdir --parents ./some/path
creates the directory (including all intermediate directories), after which:
mv yourfile.txt $_
moves the file to that directory ($_ expands to the last argument ...
Force line-buffering of stdout when piping to tee
...m.
In your case you would use it like this:
./a | unbuffer -p tee output.txt
(-p is for pipeline mode where unbuffer reads from stdin and passes it to the command in the rest of the arguments)
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