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Get the date (a day before current time) in Bash
How can I print the date which is a day before current time in Bash?
17 Answers
17
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How to get overall CPU usage (e.g. 57%) on Linux [closed]
...how you can get the system CPU usage and present it in percent using bash, for example.
5 Answers
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See what's in a stash without applying it [duplicate]
I see here you can apply/unapply a stash and even create a new branch off of a stash. Is it possible to simply see what is inside the stash without actually applying it?
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How to trick an application into thinking its stdout is a terminal, not a pipe
...what its output is connected to, eg. what the TERM environment variable is set to.
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How to loop through a directory recursively to delete files with certain extensions
... if there are spaces in filenames. You can work around this by temporarily setting the IFS (internal field seperator) to the newline character. This also fails if there are wildcard characters \[?* in the file names. You can work around that by temporarily disabling wildcard expansion (globbing).
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C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
... <stdio.h>
struct str{
int len;
char s[0];
};
struct foo {
struct str *a;
};
int main(int argc, char** argv) {
struct foo f={0};
if (f.a->s) {
printf( f.a->s);
}
return 0;
}
你编译一下上面的代码，在...
How can I specify a branch/tag when adding a Git submodule?
... Consider a tag a human readable alias to a commit. And a commit is a set of specific state for each file. A branch is essentially the same thing except you can make changes to it.
– deadbabykitten
Feb 2 '16 at 0:13
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What is the performance cost of having a virtual method in a C++ class?
...rying about the cost unless the function is something like a trivial Get()/Set() accessor, in which anything other than inline is kind of wasteful. A 7ns overhead on a function that inlines to 0.5ns is severe; a 7ns overhead on a function that takes 500ms to execute is meaningless.
The big cost of ...
IntelliJ shortcut to show a popup of methods in a class that can be searched
I'm switching over from Eclipse to IntelliJ. In Eclipse, if you do Ctrl + O in the editor, it will show a hover popup that allows you to search for a method in the class you're editing.
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C++ static virtual members?
Is it possible in C++ to have a member function that is both static and virtual ? Apparently, there isn't a straightforward way to do it ( static virtual member(); is a compile error), but is there at least a way to achieve the same effect?
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