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Going to a specific line number using Less in Unix
...to go to line number 320123, you would type 320123g.
Copy-pasted straight from Wikipedia.
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How to use sed to remove the last n lines of a file
I want to remove some n lines from the end of a file. Can this be done using sed?
22 Answers
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What's wrong with using $_REQUEST[]?
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There's absolutely nothing wrong with taking input from both $_GET and $_POST in a combined way. In fact that's what you almost always want to do:
for a plain idempotent request usually submitted via GET, there's the possibility the amount of data you want won't fit in a UR...
What is the difference between Sublime text and Github's Atom [closed]
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How is Atom different from Sublime?
Atom is an open source text editor/IDE, built on JavaScript/HTML/CSS.
Sublime Text is a commercial product, built on C/C++ and Python.
Comparable to Atom is Adobe Brackets, another open source text editor/IDE ...
PHP Regex to check date is in YYYY-MM-DD format
...nism for this.
The modern solution, with DateTime:
$dt = DateTime::createFromFormat("Y-m-d", $date);
return $dt !== false && !array_sum($dt::getLastErrors());
This validates the input too: $dt !== false ensures that the date can be parsed with the specified format and the array_sum trick...
Rebasing a branch including all its children
...ased on top of master. Also isn't C^ not the same as B? so we are rebasing from B(excluding?) to each branch containing C on top of ... B. Wouldn't the result be exactly the same as before?
– Marenz
Jan 27 '14 at 15:57
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Find lines from a file which are not present in another file [duplicate]
...le1) <(sort -u file2)
Solution 2: (the first "working" answer I found) from unix.stackexchange:
fgrep -v -f file1 file2
Note that if file2 contains duplicate lines that don't exist at all in file1, fgrep will output each of the duplicate lines. Also note that my totally non-scientific tests on...
Generate sql insert script from excel worksheet
I have a large excel worksheet that I want to add to my database.
13 Answers
13
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When should you not use virtual destructors?
...destructor when any of the below is true:
No intention to derive classes from it
No instantiation on the heap
No intention to store in a pointer of a superclass
No specific reason to avoid it unless you are really so pressed for memory.
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How do I go straight to template, in Django's urls.py?
... the class based generic views but register with the django 2.0+ pattern.
from django.urls import path
from django.views.generic import TemplateView
urlpatterns = [
path('foo/', TemplateView.as_view(template_name='foo.html'))
]
https://docs.djangoproject.com/en/2.0/ref/class-based-views/base...