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Bash script to set up a temporary SSH tunnel
...le [ ! -e $ctrl_socket ]; do sleep 0.1; done
– Adam Wallner
Feb 11 '18 at 22:19
when I do this I'm getting open failed...
How do I change selected value of select2 dropdown with JqGrid?
...for then set the selectbox value.
Notice from the docs
Notice that in order to use this method you must define the
initSelection function in the options so Select2 knows how to
transform the id of the object you pass in val() to the full object it
needs to render selection. If you are att...
How to check if there exists a process with a given pid in Python?
...t an OSError due to permissions, even if the pid exists in the system.
In order to bypass this limitation you can check if /proc/<pid> exists:
import os
def is_running(pid):
if os.path.isdir('/proc/{}'.format(pid)):
return True
return False
This applies to linux based syst...
adb shell command to make Android package uninstall dialog appear
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
...
Using awk to remove the Byte-order mark
... to true, so each record is printed.
Enjoy!
-- ADDENDUM --
Unicode Byte Order Mark (BOM) FAQ includes the following table listing the exact BOM bytes for each encoding:
Bytes | Encoding Form
--------------------------------------
00 00 FE FF | UTF-32, big-endian
FF FE 00 00 | UTF-...
Operator precedence with Javascript Ternary operator
...ach type of operator in a language is evaluated in a particular predefined order (and not just left-to-right).
Reference: Javascript Operator Precedence
How to change the order of evaluation:
Now we know why it fails, you need to know how to make it work.
Some other answers talk about changing t...
Amazon S3 direct file upload from client browser - private key disclosure
...mazon S3 via REST API using only JavaScript, without any server-side code. All works fine but one thing is worrying me...
9...
How to remove/ignore :hover css style on touch devices
I want to ignore all :hover CSS declarations if a user visits our website via touch device. Because the :hover CSS does not make sense, and it can even be disturbing if a tablet triggers it on click/tap because then it might stick until the element loses focus. To be honest, I don't know why tou...
How do I strip non alphanumeric characters from a string and keep spaces?
...
In this case I would use the bang method (gsub! instead of gsub) in order to clean the input permanently.
#permanently filter all non-alphanumeric characters, except _
@search_query.gsub!(/\W/,'')
This avoids a situation where @seach_query is used elsewhere in the code without cleaning it...
What is recursion and when should I use it?
...sion.
To see why, walk through the steps that the above languages use to call a function:
space is carved out on the stack for the function's arguments and local variables
the function's arguments are copied into this new space
control jumps to the function
the function's code runs
the function's...