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Count occurrences of a char in a string using Bash
...rs.
Multiple lines of input are also good for this solution, like command cat mytext.txt | tr -cd 'e' | wc -c can counts e in the file mytext.txt, even thought the file may contain many lines.
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How do I pass multiple attributes into an Angular.js attribute directive?
...wered Mar 16 '17 at 17:35
Ilker CatIlker Cat
9821212 silver badges1313 bronze badges
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Unable to load Private Key. (PEM routines:PEM_read_bio:no start line:pem_lib.c:648:Expecting: ANY PR
...M, which causes this problem. At least on a Mac, dumping the key text with cat did not display the BOM but looking at it with less did. I used BBEdit to remove the BOM, but any that can change the format or chop off the first four bytes will work.
– Seth Noble
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How to write character & in android strings.xml
...ere is a nice reference page: http://jrgraphix.net/research/unicode_blocks.php?block=0
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Creating a constant Dictionary in C#
...hough not necessarily a nice one; remember that according to the C# specification, switch-case tables are compiled to constant hash jump tables. That is, they are constant dictionaries, not a series of if-else statements. So consider a switch-case statement like this:
switch (myString)
{
case "c...
Can't stop rails server
... kill the Ruby on Rails default server (which is WEBrick) is:
kill -INT $(cat tmp/pids/server.pid)
In your terminal to find out the PID of the process:
$ lsof -wni tcp:3000
Then, use the number in the PID column to kill the process:
For example:
$ kill -9 PID
And some of the other answers ...
浅谈Heatmap：网页热点图生成原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...了一些随机生成的数据，以Imagick为例，代码如下：
<?php
$coordinates = array();
for ($i = 0; $i < 1000; $i++) {
$coordinates[] = array(rand($i, 1000), rand($i, 1000));
}
$max_repeat = max(
array_count_values(
array_map(function($v) { return "{$v[0]}x...
Bash script to cd to directory with spaces in pathname
...~$ vi todir.sh
ry4an@ry4an-mini:~$ . todir.sh
ry4an@ry4an-mini:My Code$ cat ../todir.sh
#!/bin/sh
cd ~/My\ Code
Are you sure the problem isn't that your shell script is changing directory in its subshell, but then you're back in the main shell (and original dir) when done? I avoided that by u...
curl_exec() always returns false
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+1: Simple and straight trouble-shooting for curl in PHP on curl_exec FALSE return. - Curl Verbose Mode in PHP example
– hakre
Nov 9 '12 at 20:10
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Getting an “ambiguous redirect” error
...s redirect
$ echo $AAAA" "$DDDD" "$MOL_TAG >> "${var}"
$ cat file\ with\ spaces
aaaa dddd mol_tag
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