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Command to change the default home directory of a user
...hing through symlinks (apache, ftpd, etc.).
You have to remember (or init script) to bind upon restarts, of course.
An example init script in /etc/fstab is
/extra-home/username /home/username none defaults,bind 0 0
share...
Why doesn't margin:auto center an image?
...style="text-align:center;"
try below code
<html>
<head>
<title>Test</title>
</head>
<body>
<div style="text-align:center;vertical-align:middle;">
<img src="queuedError.jpg" style="margin:auto; width:200px;" />
</div>
</body&...
How to pipe input to a Bash while loop and preserve variables after loop ends
...nd in the current shell environment.
Thus, using something like this in a script makes the modfied sum available after the loop:
FILECONTENT="12 Name
13 Number
14 Information"
shopt -s lastpipe # Comment this out to see the alternative behaviour
sum=0
echo "$FILECONTENT" |
while read number name;...
Ruby, Difference between exec, system and %x() or Backticks
... interpolation.
exec
By using Kernel#exec the current process (your Ruby script) is replaced with the process invoked through exec. The method can take a string as argument. In this case the string will be subject to shell expansion. When using more than one argument, then the first one is used to...
difference between offsetHeight and clientHeight
In the javascript dom - what is the difference between offsetHeight and clientHeight of an element?
2 Answers
...
Git Commit Messages: 50/72 Formatting
...
Is the maximum recommended title length really 50?
I have believed this for years, but as I just noticed the documentation of "git commit" actually states
$ git help commit | grep -C 1 50
Though not required, it’s a good idea to begin the com...
Difference between \A \z and ^ $ in Ruby regular expressions
...ne character, which means they could use an email like me@example.com\n<script>dangerous_stuff();</script> and still have it validate, since the regex only sees everything before the \n.
My recommendation would just be completely stripping new lines from a username or email beforehand, ...
how to programmatically fake a touch event to a UIButton?
...t, for: nil)
}
}
And now you can simply:
let action = UIBarButtonItem(title: "title", style: .done, target: self, action: #selector(doSomething))
action.sendAction()
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ggplot with 2 y axes on each side and different scales
...s = function(b) { paste0(round(b * 100, 0), "%")})) +
theme(
axis.title.y = element_text(color = "grey"),
axis.title.y.right = element_text(color = "blue"))
Here's the result (above code + some color tweaking):
The point (aside from using sec_axis when specifying the y_scale is ...
overlay opaque div over youtube iframe
... tip. Add wmode=transparent as a parameter to the YouTube URL:
<iframe title=<your frame title goes here>
src="http://www.youtube.com/embed/K3j9taoTd0E?wmode=transparent"
scrolling="no"
frameborder="0"
width="640"
height="390"
style="border:none;">
</if...