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How to parse XML in Bash?
...ONTENT
exit
fi
done < xhtmlfile.xhtml > titleOfXHTMLPage.txt
The first line just says, "while the read_dom functionreturns a zero status, do the following." The second line checks if the entity we've just seen is "title". The next line echos the content of the tag. The four line ...
How to find the extension of a file in C#?
...
Path.GetExtension
string myFilePath = @"C:\MyFile.txt";
string ext = Path.GetExtension(myFilePath);
// ext would be ".txt"
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...
Batch script loop
...of the loop, do this:
for /l %x in (1, 1, 100) do (
echo %x
copy %x.txt z:\whatever\etc
)
or in a batch file
for /l %%x in (1, 1, 100) do (
echo %%x
copy %%x.txt z:\whatever\etc
)
Key:
/l denotes that the for command will operate in a numerical fashion, rather than operating on a s...
Inline comments for Bash?
...le piped commands.
Example uncommented code:
#!/bin/sh
cat input.txt \
| grep something \
| sort -r
Solution for a pipe comment (using a helper function):
#!/bin/sh
pipe_comment() {
cat -
}
cat input.txt \
| pipe_comment "filter down to lines that co...
How to modify a text file?
... file, make the modifications and write it out to a new file called myfile.txt.tmp or something like that. This is better than reading the whole file into memory because the file may be too large for that. Once the temporary file is completed, I rename it the same as the original file.
This is a go...
vim command to restructure/force text to 80 columns
...both for your example.
$ echo -e 'long line is long!\nshort' > 3033423.txt
$ cat 3033423.txt
long line is long!
short
$ fmt -w 13 3033423.txt
long line is
long! short
$ par 13gr 3033423.txt
long line is
long! short
To use from inside Vim:
:%! fmt -w 13
:%! par 13gr
You can also set :format...
How to find all links / pages on a website
...
Check out linkchecker—it will crawl the site (while obeying robots.txt) and generate a report. From there, you can script up a solution for creating the directory tree.
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编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...。这些代码也会被编译一个函数功能块(当然并不是一个完整的函数)。它实际上变成了一个怎么结束函数执行的代码块。代码形式如下：
// execute handler code
return addressWhereToContinueAfterCatch;
OS得到跳转地址后，它会重建异常发生...
Python how to write to a binary file?
...t.pack('5B', *newFileBytes))
However I would never give a binary file a .txt extension.
The benefit of this method is that it works for other types as well, for example if any of the values were greater than 255 you could use '5i' for the format instead to get full 32-bit integers.
...
How to skip over an element in .map()?
...nother reducing function
const inputSources = [{src:'one.html'}, {src:'two.txt'}, {src:'three.json'}]
inputSources.reduce(mappingSrc(concat), [])
// -> ['one.html', 'two.txt', 'three.json']
// remember this is really essentially just
// inputSources.reduce((acc, x) => acc.concat([x.src]), [])...