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Delete specific line number(s) from a text file using sed?
...etes the lines right away. For example;
grep -nh error logfile | cut -d: -f1 | deletelines logfile
(where deletelines is the utility you are imagining you need) is the same as
grep -v error logfile
Having said that, if you are in a situation where you genuinely need to perform this task, you c...
node.js hash string?
...ire('sha1');
var hash = sha1("my message");
console.log(hash); // 104ab42f1193c336aa2cf08a2c946d5c6fd0fcdb
or
$ npm install md5
and then
var md5 = require('md5');
var hash = md5("my message");
console.log(hash); // 8ba6c19dc1def5702ff5acbf2aeea5aa
(MD5 is insecure but often used by servi...
How to find what code is run by a button or element in Chrome using Developer Tools
...tener Breakpoint
You were close on this one.
Open the Chrome Dev Tools (F12), and go to the Sources tab.
Drill down to Mouse -> Click
(click to zoom)
2. Click the button!
Chrome Dev Tools will pause script execution, and present you with this beautiful entanglement of minified code:
(c...
What is the recommended way to use Vim folding for Python code
...{{{3<esc>
nnoremap ,f4 ^wywO#<c-r>0 {{{4<esc>
nnoremap ,f1 ^wywO#<c-r>0 {{{1<esc>
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How to convert a byte array to a hex string in Java?
... unprintable elements. What I need is the exact hexcode in the form of: 3a5f771c
27 Answers
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Function in JavaScript that can be called only once
...like that I do not suggest using the _.once method. See jsfiddle.net/631tgc5f/1
– asawyer
Sep 9 '16 at 15:08
...
How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
...ram3": "val3_new"}},
... new: true
... })
{
"_id" : ObjectId("56476e04e5f19d86ece5b81d"),
"id" : "test_object",
"some_key" : {
"param1" : "val1",
"param2" : "val2_new",
"param3" : "val3_new"
}
}
You can delve as deep as you like. This is also useful for addi...
Is it worth hashing passwords on the client side
...what AWS Cognito does in the client for reference.
– f1lt3r
Sep 6 '18 at 13:47
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How do you create a toggle button?
...cmn-toggle-round + label:before {
right: 1px;
background-color: #f1f1f1;
border-radius: 60px;
transition: background 0.4s;
}
input.cmn-toggle-round + label:after {
width: 58px;
background-color: #fff;
border-radius: 100%;
box-shadow: 0 2px 5px rgba(0, 0,...
Correct way to detach from a container without stopping it
...turns me: Error response from daemon: Container f560a0ad6806150b2775d0b6e6d5f7065a03775bae858fb4fb7df05a277976db is not running
– Webwoman
Mar 1 '19 at 13:27
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