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What must I know to use GNU Screen properly? [closed]
...{-b dw}%?%{-b dg}%+Lw%? %{=b dk}]%{-b dw}:%{+b dw}:"
backtick 2 5 5 $HOME/scripts/meminfo
hardstatus alwayslastline "%{+b dw}:%{-b dw}:%{+b dk}[%{-b dg} %0C:%s%a %{=b dk}]-[ %{-b dw}Load%{+b dk}:%{-b dg}%l %{+b dk}] [%{-b dg}%2`%{+b dk}] %=[ %{-b dg}%1`%{=b dk} ]%{-b dw}:%{+b dw}:%<"
sorendit...
What is the purpose of fork()?
...eads, which don't have their own address space and exist within a process.
Scripting languages use fork indirectly to start child processes. For example, every time you use a command like subprocess.Popen in Python, you fork a child process and read its output. This enables programs to work togeth...
jQuery exclude elements with certain class in selector
... text-align: center;
}
.navitem.active
{
background:green;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="navitem">Home</div>
<div class="navitem">About</div>
<div class="navitem">Pricing...
String literals: Where do they go?
...over details like that, if you want it (e.g. gnu ld allows you to supply a script to tell it all about how to group data, code, etc.)
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Where does git config --global get written to?
...have defined a HOME environment variable. The is detailed in the 'profile' script.
In my corporate environment the HOMEDRIVE is H:, which is then mapped to a network URL \\share\$. The whole lot is then mapped to be "My Documents", which isn't where others would expect. There may have been some fur...
How to convert a PNG image to a SVG? [closed]
...le = 2017.pnm
potrace 2017.pnm -s -o 2017.svg
Output file = 2017.svg
Script
ykarikos proposes a script png2svg.sh that I have improved:
#!/bin/bash
File_png="${1?:Usage: $0 file.png}"
if [[ ! -s "$File_png" ]]; then
echo >&2 "The first argument ($File_png)"
echo >&2 "must...
How do I find all of the symlinks in a directory tree?
...
What I do is create a script in my bin directory that is like an alias.
For example I have a script named
lsd
ls -l | grep ^d
you could make one
lsl
ls -lR | grep ^l
Just chmod them +x and you a...
How to load external webpage inside WebView
... mWebview = new WebView(this);
mWebview.getSettings().setJavaScriptEnabled(true); // enable javascript
final Activity activity = this;
mWebview.setWebViewClient(new WebViewClient() {
@SuppressWarnings("deprecation")
@Override
public...
Get Base64 encode file-data from Input Form
...
It's entirely possible in browser-side javascript.
The easy way:
The readAsDataURL() method might already encode it as base64 for you. You'll probably need to strip out the beginning stuff (up to the first ,), but that's no biggie. This would take all the fun out th...
JOIN queries vs multiple queries
...ponential memory leak issue. Grab all of the data, then use a server-side scripting language to sort it out:
SELECT * FROM Address WHERE Personid IN(1,2,3);
Results:
Address.id : 1 // First person and their address
Address.Personid : 1
Address.City : "Boston"
Address.id : 2 ...