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Asynchronous shell exec in PHP
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if the user you run apache (usually www-data) doesn't have the permissions to use at and you can't configure it to, you can try to use <?php exec('sudo sh -c "echo \"command\" | at now" '); If command contains quotes, see escapeshellarg to save you headaches...
All permutations of a Windows license key
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http://www.magicaljellybean.com/keyfinder/
The Magical Jelly Bean Keyfinder is a freeware utility that retrieves your Product Key (cd key) used to install windows from your registry. It also has a community-updated configuration...
Regular Expression for alphanumeric and underscores
...ppreciate the readability of the full POSIX character class names ( http://www.zytrax.com/tech/web/regex.htm#special ), so I'd say:
^[[:alnum:]_]+$
However, while the documentation at the above links states that \w will "Match any character in the range 0 - 9, A - Z and a - z (equivalent of POSI...
使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...logy - Bluetooth Technology Website”, 2016.
[Online]. Available:https://www.bluetooth.com/what-is-bluetooth-technology/bluetooth.
[7] ”Introduction to Bluetooth Low Energy - Adafruit Learning System”, 2016. [Online].
Available: https://learn.adafruit.com/introduction-to-bluetooth-low-ene...
Python Flask, how to set content type
...ef hello():
headers={ 'content-type':'text/plain' ,'location':'http://www.stackoverflow'}
response = make_response('<h1>hello world</h1>',301)
response.headers = headers
return response
case two：
@app.route('/hello')
def hello():
headers={ 'content-type':'text/...
Verify version of rabbitmq
...ersion.py dev.rabbitmq.com
information Licensed under the MPL. See http://www.rabbitmq.com/
product RabbitMQ
copyright Copyright (C) 2007-2011 VMware, Inc.
capabilities {}
platform Erlang/OTP
version 2.6.0
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How do I limit the number of results returned from grep?
... to grep first 2 occurrences across all files. sed documentation: https://www.gnu.org/software/sed/manual/sed.html
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How can I profile Python code line-by-line?
...can connect to a running program and get statistics from it).
See: http://www.pyvmmonitor.com/
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Using sed to mass rename files
...ost with examples on batch renaming using sed couple of years ago:
http://www.guyrutenberg.com/2009/01/12/batch-renaming-using-sed/
For example:
for i in *; do
mv "$i" "`echo $i | sed "s/regex/replace_text/"`";
done
If the regex contains groups (e.g. \(subregex\) then you can use them in the ...
How to install gem from GitHub source?
...directory instead. Passenger will run ruby as your web-server's user (e.g. www-data) which has no access to this directory and therefore this "git-gem" won't be loaded. You will get an error ... is not yet checked out. Run bundle install first.
– fishbone
Feb 1...