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Check Whether a User Exists
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Why don't you simply use
grep -c '^username:' /etc/passwd
It will return 1 (since a user has max. 1 entry) if the user exists and 0 if it doesn't.
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How do you force a CIFS connection to unmount
...ly. I tried everything else above and the cifs mount disappeared from my /etc/mtab listing but it cannot be remounted, so it's effectively useless. The cifs mount freezes when my computer suspends itself while the cifs share is mounted.
– DH4
Sep 23 '12 at 1...
Dynamically add script tag with src that may include document.write
...ally and want to add other attributes to the script tag, e.g. class, type, etc., then the following snippet would help you:
var scriptElm = document.createElement('script');
scriptElm.setAttribute('class', 'class-name');
var inlineCode = document.createTextNode('alert("hello world")');
scriptElm.ap...
How do I find and view a TFS changeset by comment text?
...ced it's really looking for the local map path, so it was C:\tfs\myfolders\etc, not the url path from the server's point of view.
– goodeye
Oct 7 '11 at 0:46
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How can I get a Dialog style activity window to fill the screen?
...Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.your_layout);
getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
}
It's important that you call Window.setLayout() after you call setContentView(), o...
How to set tint for an image view programmatically in android?
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You can change the tint, quite easily in code via:
imageView.setColorFilter(Color.argb(255, 255, 255, 255)); // White Tint
If you want color tint then
imageView.setColorFilter(ContextCompat.getColor(context, R.color.COLOR_YOUR_COLOR), android.graphics.PorterDuff.Mode.MULTIPLY);
For...
How to specify an area name in an action link?
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If you can not use standart web aplication link like About, Home, Contac etc from area. You change lines
@Html.ActionLink("Ana Sayfa", "Index", "Home", new { area = "" }, new {})
from
Views\Shared_Layout.cshtml
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Git add all files modified, deleted, and untracked?
... all files no matter what you do to them whether it be deleted, untracked, etc? like for a commit. I just don't want to have to git add or git rm all my files every time I commit, especially when I'm working on a large product.
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What's the best way to limit text length of EditText in Android
...will lose all the other already defined filters (e.g. maxLines, inputType, etc) which you might have added either through XML or programatically.
So this is WRONG:
editText.setFilters(new InputFilter[] {new InputFilter.LengthFilter(maxLength)});
To avoid losing previously added filters you need to ...
Twitter Bootstrap - how to center elements horizontally or vertically
...play:block or display:flex elements that have a defined width, (%, vw, px, etc..). Flexbox is used by default on grid columns, so there are also various flexbox centering methods.
Demo Bootstrap 4 Horizontal Centering
For vertical centering in BS4 see https://stackoverflow.com/a/41464397/171456
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