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Replace one substring for another string in shell script
...wd command to avoid defining a new variable each time my custom $PS1 runs. Does Bash provide a more general way than magic variables to use the output of a command for string replacement? As for your code, I had to escape the ~ to keep Bash from expanding it into $HOME. Also, what does the # in your...
Which cryptographic hash function should I choose?
...ree.
It has been shown that MD5 is not collision resistant, however, that does not preclude its use in applications that do not require collision resistance. Indeed, MD5 is often still used in applications where the smaller key size and speed are beneficial. That said, due to its flaws, researchers...
How can I uninstall an application using PowerShell?
...g some issues:
If there are more matches than 1 for the below script, it does not work and you must append the PowerShell filter that limits results to 1. I believe it's -First 1 but I'm not sure. Feel free to edit.
If the application is not installed by MSI it does not work. The reason it was wri...
the source file is different from when the module was built
...
Thank you. It does say debug. Is that what it should be?
– frustratedcoder
Jun 21 '10 at 18:45
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Bash command to sum a column of numbers [duplicate]
...
Does two lines count?
awk '{ sum += $1; }
END { print sum; }' "$@"
You can then use it without the superfluous 'cat':
sum < FileWithColumnOfNumbers.txt
sum FileWithColumnOfNumbers.txt
FWIW: on MacOS X, you can...
How do I find the length of an array?
...th of array = " << (sizeof(a)/sizeof(*a)) << std::endl;
This doesn't work on pointers (i.e. it won't work for either of the following):
int *p = new int[7];
std::cout << "Length of array = " << (sizeof(p)/sizeof(*p)) << std::endl;
or:
void func(int *p)
{
std::...
SQLAlchemy default DateTime
...
DateTime doesn't have a default key as an input. The default key should be an input to the Column function. Try this:
import datetime
from sqlalchemy import Column, Integer, DateTime
from sqlalchemy.ext.declarative import declarative...
Create Directory When Writing To File In Node.js
...b/c/myfile.txt". "/home/documents" exists, while everything in front of it doesn't. When "ensureDirectoryExistence" is called for the 1st time, dirname is "/home/documents/a/b/c". I can't call fs.mkdirSync(dirname) right now because "/home/documents/a/b" also doesn't exist. To create the directory "...
How to extract custom header value in Web API message handler?
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The null check for GetValues doesn't serve any value as it will never return null. If the header doesn't exist you will get an InvalidOperationException. You need to use TryGetHeaders if it's possible the header might not exist in the request and check f...
Add Variables to Tuple
... element is 7. Likewise, 3 * ( 7+8) = 45, but 3 * (7+8,) = (15, 15, 15) -- does that make sense?
– Daniel
May 27 '18 at 3:28
2
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