hacks

change from print "string" to print("string")

in notepad++ cntrl+h

from print\s"(.*)"(.*) to print\("\1"\2\)

example:

print "some string %s" % some_variable

will become

print("some string %s" % some_variable)

find a specific line in file when line number is given

perl -ne 'print "$ARGV : $_" if $. == <line number>; } continue { close ARGV if eof;' <file name>

how to get the longitude latitude from city

curl http://maps.googleapis.com/maps/api/geocode/json?address=London&sensor=false

vimrc

This is my vimrc file

docs: https://github.com/klen/python-mode http://docs.python-guide.org/en/latest/dev/env/

Also first install pathogen for this to work

clone it

git clone https://github.com/infinite-Joy/hacks.git

put it in the home folder and install

cd ~
cp hacks/myvimrc .vimrc

:so ~/.vimrc
:PluginInstall

get output from a webpage

perl -MLWP::Simple -e "getprint 'https://domain.com/dummy/context/root/with/rest/api';"

how to find which process taking which pid

port=$1
addr=`netstat -Aan | grep $port | awk '{print $1}'`
pid=`rmsock $addr tcpcb | awk '{print $9}'`
ps -ef | grep $pid

install docker in ubuntu 32 bit

http://stackoverflow.com/questions/33420241/docker-on-ubuntu-15-10-32-bit-os-and-processor/38681348#38681348

git clone https://github.com/docker-32bit/ubuntu.git
cd ubuntu
bash build-image.sh

copy a list of files later older than 2 days but not older than 30 days to new_folder

find . -type f -mtime +2 -a -mtime -30 -print | xargs -I {} cp {} new_folder

Use jq to pretty print some json data with ANSI color coded syntax and use -R in less to process the color.

jq -C '.' data.json | less -R

Generate output similar to 'tree' without using tree

find . -print | sort | sed 's;[^/]*/;|---;g;s;---|; |;g'

How to check the links in the webpage and find broken links

wget --spider -r -nd -nv -H -l 1 -w 2 -o run1.log  https://flawcode.com/episode/show/6/

In case you want jupyter notebook to have a new environment as well

source activate myenv python -m ipykernel install --user --name myenv --display-name "Python (myenv)" source activate other-env python -m ipykernel install --user --name other-env --display-name "Python (other-env)"

source: http://ipython.readthedocs.io/en/stable/install/kernel_install.html#kernels-for-different-environments

Count the number of commits in the last one month.

git log --before={`date "+%Y-%m-01"`} --after={`date --date='-1 month' "+%Y-%m-01"`} --author="joydeep bhattacharjee" --reverse --pretty=format:"%cd  %h  %an  %s" --date=short | cat | wc -l

put all file paths that needs to be changed and run sed file replace on all of them

git diff and find only the file names

git diff --name-only mario_26_code_coverage dev | cat > file_path.txt

run sed file replace on all of them

cat file_path.txt| xargs sed -i 's/old/new/g'

find old word to be replaced and replace them everywhere in the project

grep -r old_word * | cut -d ":" -f1 | grep -v Binary | grep -v .ropeproject | sort | uniq | xargs -L1 sed -i.bak -e 's/old_word/new_word/g'

Setup vim based code jump in code

You need to have exuberant ctags installed first.

sudo apt-get install exuberant-ctags

Run the following command in your code.

ctags -R --fields=+l --languages=python --python-kinds=-iv -f ./tags $(python -c "import os, sys; print(' '.join('{}'.format(d) for d in sys.path if os.path.isdir(d)))")

That should create a tag file in your root folder.

Keep track of the memory with time stamp

➜  ~ vm_stat 10 | gawk 'NR>2 {now=strftime("%Y-%m-%d %T "); gsub("K","000");print now ($1+$4)/256000}'
2018-08-25 21:40:55 6.16284
2018-08-25 21:41:05 6.79999
2018-08-25 21:41:15 6.57524
2018-08-25 21:41:25 6.75619
2018-08-25 21:41:35 6.40904

Check if all the lines in a jsonl file are valid json.

$ while read line; do echo $line | python -c "import sys,json;json.loads(sys.stdin.read())"; done < filename.jsonl

change shell to fish

https://gist.github.com/ghaiklor/5c393e1c27cab79a9258