benstannard

# List files recursively with Human-readable size
ls -lhR

# Human-readable with filesystem type
df -hT

# Show top-level directory sizes
du -h --max-depth=1 / | sort -hr | head -20

# Current directory breakdown

benstannard

# https://kubernetes.io/docs/reference/kubectl/quick-reference/

# use k for shorthand alias
alias k=kubectl

# context and configuration
kubectl config view 
kubectl config get-contexts
kubectl config set-cluster my-cluster-name           # set a cluster entry in the kubeconfig

benstannard

# https://helm.sh/docs/intro/cheatsheet/

# Chart Management
helm create <name>                      # Creates a chart directory along with the common files and directories used in a chart.
helm package <chart-path>               # Packages a chart into a versioned chart archive file.
helm lint <chart>                       # Run tests to examine a chart and identify possible issues:
helm show all <chart>                   # Inspect a chart and list its contents:
helm show values <chart>                # Displays the contents of the values.yaml file
helm pull <chart>                       # Download/pull chart 
helm pull <chart> --untar=true          # If set to true, will untar the chart after downloading it

benstannard

/* create, delete, rename a user without privileges*/
CREATE ROLE ben;
DROP ROLE ben;
ALTER ROLE ben RENAME TO benji;

/* create a user with privileges*/
CREATE ROLE ben LOGIN CREATEDB CREATEROLE REPLICATION;

/* Add privileges to existing user*/
ALTER ROLE ben WITH LOGIN CREATEROLE CREATEDB REPLICATION;

benstannard

def chunks(seq, n=5):
    """apply to users hotelcode. 'aaaaabbbbb' becomes ('aaaaa', 'bbbbb')"""
    return tuple((seq[i:i+n] for i in range(0, len(seq), n)))

@app.route("/search", methods=["GET", "POST"])
@login_required
def search():
    # test/check for access
    if "BB" not in chunks(current_user.access, n=2): abort(401)

benstannard

cat ~/.ssh/id_rsa.pub | ssh <user>@<hostname> 'cat >> .ssh/authorized_keys && echo "Key copied"'


# Debug Docker Container
 run --rm -it --entrypoint /bin/bash <image>

benstannard

# hipandas.py
"""Useful Tips
column: axis=1
rough rule: back-to-back ][ square brackets, you're asking for trouble 
Replace that with a .loc[..., ...] and you'll be set.
.loc label-based indexing
.iloc for positional indexing 
"""
import os
import pandas as pd