大约有 1,824 项符合查询结果（耗时：0.0350秒） [XML]
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:
$cat foo; cat bar
Cat
Dog
Let's create hard...
How do you run a command for each line of a file?
...use there is not only 1 answer...
shell command line expansion
xargs dedicated tool
while read with some remarks
while read -u using dedicated fd, for interactive processing (sample)
Regarding the OP request: running chmod on all targets listed in file, xargs is the indicated tool. But for some ...
How to get the cuda version?
...he CUDA compiler version (which matches the toolkit version).
From application code, you can query the runtime API version with
cudaRuntimeGetVersion()
or the driver API version with
cudaDriverGetVersion()
As Daniel points out, deviceQuery is an SDK sample app that queries the above, along ...
How to detect if my shell script is running through a pipe?
...eas
(if [ -t 1 ] ; then echo terminal; else echo "not a terminal"; fi) | cat
returns "not a terminal", because the output of the parenthetic is piped to cat.
The -t flag is described in man pages as
-t fd True if file descriptor fd is open and refers to a terminal.
... where fd can be ...
How to delete object from array inside foreach loop?
...
Be careful with the main answer.
with
[['id'=>1,'cat'=>'vip']
,['id'=>2,'cat'=>'vip']
,['id'=>3,'cat'=>'normal']
and calling the function
foreach($array as $elementKey => $element) {
foreach($element as $valueKey => $value) {
if($valueKey...
jquery find closest previous sibling with class
...
Try:
$('li.current_sub').prevAll("li.par_cat:first");
Tested it with your markup:
$('li.current_sub').prevAll("li.par_cat:first").text("woohoo");
will fill up the closest previous li.par_cat with "woohoo".
...
How to insert a text at the beginning of a file?
...ile
Or you can use Command Grouping:
$ { echo -n '<added text> '; cat file; } >file.new
$ mv file{.new,}
share
|
improve this answer
|
follow
|
...
Linux command (like cat) to read a specified quantity of characters
Is there a command like cat in linux which can return a specified quantity of characters from a file?
9 Answers
...
dynamic_cast and static_cast in C++
...rwise, you'll get a NULL pointer.
But B2D casts are a little more complicated. Consider the following code:
#include <iostream>
using namespace std;
class Base
{
public:
virtual void DoIt() = 0; // pure virtual
virtual ~Base() {};
};
class Foo : public Base
{
public:
virt...
Function to clear the console in R and RStudio
...
cat("\014")
is the code to send CTRL+L to the console, and therefore will clear the screen.
Far better than just sending a whole lot of returns.
...