carsonip

The form '!' is available for those poor souls who claim they can’t remember whether network byte order is big-endian or little-endian.

https://docs.python.org/2/library/struct.html#byte-order-size-and-alignment

carsonip

Change all files and folders permissions of a directory to 644/755

chmod -R u+rwX,go+rX,go-w /foo

How to count all the lines of code in a directory recursively?

find . -name '*.php' | xargs wc -l

carsonip

*PPD-Adobe: "4.3"

*%================================================
*%	Copyright(C) 2011 Brother Industries, Ltd.
*%	"Brother MFC-J615W CUPS"
*%================================================ 

*%==== General Information Keywords ========================
*FormatVersion: "4.3"
*FileVersion: "1.00"

carsonip

# this script will show how to get the total size of the blobs in a container
# before running this, you need to create a storage account, create a container,
#    and upload some blobs into the container 
# note: this retrieves all of the blobs in the container in one command 
#       if you are going to run this against a container with a lot of blobs
#       (more than a couple hundred), use continuation tokens to retrieve
#       the list of blobs. We will be adding a sample showing that scenario in the future.

# these are for the storage account to be used
param(

carsonip

sudo apt install fcitx fcitx-config-gtk fcitx-frontend-all fcitx-ui-classic fcitx-ui-qimpanel fcitx-libs-qt fcitx-libs-qt5 fcitx-config-gtk2 fcitx-libs-dev fcitx-frontend-qt4 fcitx-frontend-qt5 fcitx-ui-light
echo 'export GTK_IM_MODULE=fcitx
export QT_IM_MODULE=fcitx
export QT4_IM_MODULE=fcitx
export XMODIFIERS=@im=fcitx' >> ~/.xprofile

Install quick classic:

carsonip

"""
A practice of different implementations of Quicksort
Programming Pearls: column 11
"""

import random
import time
import sys
sys.setrecursionlimit(15000)

carsonip

"""
Heap (Min Heap), Heapsort
Programming Pearls: column 14
"""
import sys
import random
import time

sys.setrecursionlimit(1500)

carsonip

Kill all threads from a MySQL User

mysql -BNe "SELECT id FROM processlist WHERE user = 'redmine';" information_schema | while read id; do mysqladmin kill $id; done

Debug Tmp Disk Tables

SELECT * FROM performance_schema.events_statements_summary_by_digest order by SUM_CREATED_TMP_DISK_TABLES desc limit 10\G

carsonip

Count number of items in generator

sum(1 for i in it)

carsonip

Argument

echo $1 $2  # argument by position
echo $@  # all arguments

Default

echo ${x:-default value}  # equiv to python: "x or 'default value'"