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What is the use of the %n format specifier in C?
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void authorizeUser( char * username, char * password){
...code here setting authorized to false...
printf(username);
if ( authorized ) {
giveControl(username);
}
}
where a malicious user could take advantage of the username parameter getting passed into printf as the f...
How do I decode a string with escaped unicode?
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vim, switching between files rapidly using vanilla Vim (no plugins)
...t they get the job done without much dependencies.
Juggling with files
set path=.,**
nnoremap <leader>f :find *
nnoremap <leader>s :sfind *
nnoremap <leader>v :vert sfind *
nnoremap <leader>t :tabfind *
:find is a truly great command as soon as you set path correctly. W...
How can I run dos2unix on an entire directory? [closed]
I have to convert an entire directory using dos2unix . I am not able to figure out how to do this.
11 Answers
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What is the most useful script you've written for everyday life? [closed]
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Super remote reset button.
A rack of super special simulation hardware (backin the days when a room full of VME crates did less than your GPU) that a user on the other side of the world would crash in the early hours of the morning. It took...
Start / Stop a Windows Service from a non-Administrator user account
... give the command or run the code is a non-Admin account, then you need to set the privileges to that particular user account so it has the ability to start and stop Windows Services. This is how you do it.
Login to an Administrator account on the computer which has the non-Admin account from which ...
live output from subprocess command
...ded a (non-None) value for stdout, and even then, it is only needed if you set stdout=subprocess.PIPE. (Otherwise you can just provide the same argument you provided for stdout, e.g., Popen(..., stdout=stream, stderr=stream).)
The easiest cases (no pipes)
If you redirect nothing (leave all three...
How to fix Git error: object file is empty?
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I had a similar problem. My laptop ran out of battery during a git operation. Boo.
I didn't have any backups. (N.B. Ubuntu One is not a backup solution for git; it will helpfully overwrite your sane repository with your corrupted one.)
To the git wizards, if this wa...
Windows batch: echo without new line
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Using set and the /p parameter you can echo without newline:
C:\> echo Hello World
Hello World
C:\> echo|set /p="Hello World"
Hello World
C:\>
Source
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Are there any O(1/n) algorithms?
...of 1, albeit contrived and tongue-in-cheek answer:
Do any two people in a set have the same birthday? When n exceeds 365, return true. Although for less than 365, this is O(n ln n). Perhaps not a great answer since the problem doesn't slowly get easier but just becomes O(1) for n > 365.
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