Jim-Holmstroem

wget -r -l -H -A pdf www.homepage.com/afolder

Jim-Holmstroem

function [imgs]=LoadData(DirName)
    imgs=dir(strcat(DirName,'/*.png'));

    for it=1:numel(imgs)
        %getting metadata from the filename itself
        info=regexp(imgs(it).name,'(test|train)_digit(\d*)_(\d*)','tokens');
        info=info{1};
        if(numel(info)~=3)
            error(strcat(imgs(it).name,' is malformed filename-format'));
        end

Jim-Holmstroem

all(i<10 for i in range(100)) #10+1 evaluations
any(i*i>10 for i in range(100)) #4+1 evaluations

Jim-Holmstroem

URL=www.homepage.com/folder
TEMP= /tmp

wget_testdata:
    wget $(URL)/testdata.tar.gz -O $(TMP)/testdata.tar.gz
    tar -xf $(TMP)/testdata.tar.gz -C $(TMP)
    if [ -h test ]; then echo "test does already exist"; else ln -s $(TMP)/testdata testdata; fi

Jim-Holmstroem

imagesc((adapthisteq(mean(double(imread('image.png'))/255,3))))

Jim-Holmstroem

df -T %to find the label of the usbstick (in this case /dev/sdd1)
sudo umount /dev/sdd1
sudo mkfs.ext4 /dev/sdd1
sudo e2label /dev/sdd1 memstick
sudo chmod 777 /media/memstick_folder

Jim-Holmstroem

# Error message when trying to start a virtualbox OS:
#
#VirtualBox can’t operate in VMX root mode. Please disable the KVM kernel extension, recompile your kernel and #reboot (VERR_VMX_IN_VMX_ROOT_MODE).
#
# Fix:
modprobe -r kvm_intel

Jim-Holmstroem

from itertools import *

def matrix_range(N,M):
    return map(lambda i: range(i,i+M),range(0,N*M,M)) #Create a MxN matrix (for testing)
A=matrix_range(5,3)

At=zip(*A) #transpose
At2=map(list,zip(*A)) #transpose without the tuple problems (slower)
At3=map(list,izip(*A)) #could be faster for big lists
a=chain(*A) #flatten to vector, lazyversion: http://docs.python.org/library/itertools.html#itertools.chain.from_iterable

Jim-Holmstroem

import operator

data = [['1','2','3','4'],['a','b','c','d'],['A','B','C','D'],['!','@','#','$']]

data03 = map(operator.itemgetter(0,3),data)
data023= map(operator.itemgetter(0,2,3),data)

import itertools
datavector_1 = list(itertools.chain(*map(operator.itemgetter(1),data)))

Jim-Holmstroem

netstat -nr