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More elegant “ps aux | grep -v grep”
...0 ? Ss Oct20 0:00 /usr/sbin/sshd -D
$ ps up $(pgrep -f sshddd)
error: list of process IDs must follow p
[stderr output truncated]
$ ps up $(pgrep -f sshddd) 2>&-
[no output]
The above can be used as a function:
$ psgrep() { ps up $(pgrep -f $@) 2>&-; }
$ psgrep sshd
US...
Genymotion, “Unable to load VirtualBox engine.” on Mavericks. VBox is setup correctly
I keep getting the following error:
17 Answers
17
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JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
...ava installer is supposed to uncompress them. If you are experiencing this error, apparently that didn't happen.
You need to manually run unpack200 on all .pack files in the JRE's lib/ and lib/ext/ folders.
Windows
To unpack one .pack file (for example rt.pack), run:
"%JAVA_HOME%\bin\unpack200" ...
Java “lambda expressions not supported at this language level”
... Awesome. Thank you so much. This saved my day. I was struggling with the error not sure what needs to be done to enable the lambda expressions.
– Siddhartha Thota
Oct 24 '17 at 22:27
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What is the best way to get all the divisors of a number?
...ed insecure.
Python code:
import math
def divisorGenerator(n):
large_divisors = []
for i in xrange(1, int(math.sqrt(n) + 1)):
if n % i == 0:
yield i
if i*i != n:
large_divisors.append(n / i)
for divisor in reversed(large_divisors):
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Is it safe to delete a NULL pointer?
... Setting a pointer to NULL after deleting it masquerades memory allocation errors, which is a very bad thing. A program that is correct does not delete a pointer twice, and a program that does delete a pointer twice should crash.
– Damon
Aug 30 '13 at 18:48
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Inserting a string into a list without getting split into characters
I'm new to Python and can't find a way to insert a string into a list without it getting split into individual characters:
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Bubble Sort Homework
In class we are doing sorting algorithms and, although I understand them fine when talking about them and writing pseudocode, I am having problems writing actual code for them.
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Can you control how an SVG's stroke-width is drawn?
Currently building a browser-based SVG application. Within this app, various shapes can be styled and positioned by the user, including rectangles.
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How to make IPython notebook matplotlib plot inline
...3.1.0.
– Ian Fiske
May 20 '15 at 20:05
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