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Python concatenate text files
...e ['file1.txt', 'file2.txt', ...] . I want to write a Python script to concatenate these files into a new file. I could open each file by f = open(...) , read line by line by calling f.readline() , and write each line into that new file. It doesn't seem very "elegant" to me, especially the part w...
Awaiting multiple Tasks with different results
...ou use WhenAll, you can pull the results out individually with await:
var catTask = FeedCat();
var houseTask = SellHouse();
var carTask = BuyCar();
await Task.WhenAll(catTask, houseTask, carTask);
var cat = await catTask;
var house = await houseTask;
var car = await carTask;
You can also use Ta...
How to pattern match using regular expression in Scala?
... @MichaelLafayette: Inside of a character class ([]), the caret indicates negation, so [^\s] means 'non-whitespace'.
– Fabian Steeg
Jun 6 '16 at 12:02
...
Count all occurrences of a string in lots of files with grep
...
cat * | grep -c string
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Inheritance vs. Aggregation [closed]
...y to keep the correlation logical. Then we have a big nasty smell that indicates that we had to use aggregation.
If we have used aggregation (or we plan to use it) but we find out we need to copy almost all of the functionality. Then we have a smell that points in the direction of inheritance.
To ...
What is the difference between a symbolic link and a hard link?
...e two files:
$ touch foo; touch bar
Enter some Data into them:
$ echo "Cat" > foo
$ echo "Dog" > bar
(Actually, I could have used echo in the first place, as it creates the files if they don't exist... but never mind that.)
And as expected:
$cat foo; cat bar
Cat
Dog
Let's create hard...
Pseudo-terminal will not be allocated because stdin is not a terminal
...
Try ssh -t -t(or ssh -tt for short) to force pseudo-tty allocation even if stdin isn't a terminal.
See also: Terminating SSH session executed by bash script
From ssh manpage:
-T Disable pseudo-tty allocation.
-t Force pseudo-tty allocation. This can be used to execute a...
Write to file, but overwrite it if it exists
...
#!/bin/bash
cat <<EOF > SampleFile
Put Some text here
Put some text here
Put some text here
EOF
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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...e should calculate
* @totalpages: total present RAM allowed for page allocation
*
* The heuristic for determining which task to kill is made to be as simple and
* predictable as possible. The goal is to return the highest value for the
* task consuming the most memory to avoid subsequent ...
How does one escape backslashes and forward slashes in VIM find/search?
...anywhere else in linuxy programs, with a backslash:
:%s/<dog\/>/<cat\\>
But note that you can select a different delimiter instead:
:%s@<doc/>@<cat\\>@
This saves you all typing all those time-consuming, confusing backslashes in patterns with a ton of slashes.
From the...