ipan

import argparse

parser = argparse.ArgumentParser(description="script description")

parser.add_argument('input_names', nargs="*", help="input name(s)")
parser.add_argument('-t', '--target', required=True)
parser.add_argument('-of', '--option-flag', action='store_true', default=False, help="description for option flag")
parser.add_argument('--number', type=int, default=0, help="description for int num")

args = parser.parse_args()

ipan

import subprocess
import shlex

cmd = 'ls -lhrt python'

subprocess.call(shlex.split(cmd))

try:
    subprocess.check_output(['ls'])
except subprocess.CalledProcessError as e:

ipan

ssh-keygen -t rsa -C "your.email@example.com" -b 4096

ipan

"""
example dockerfile for longprocess:

https://github.com/ipan/dockerfiles/tree/master/longprocess
"""

import docker
client = docker.from_env()

lp = client.containers.run("longprocess", "/src/run.sh 5", detach=True)

ipan

def rand_string(length):
    """ Generates a random string of numbers, lower- and uppercase chars. """
    rand_str = ''.join(random.choice(string.ascii_lowercase
                                     + string.ascii_uppercase
                                     + string.digits)
                       for i in range(length))
    return rand_str

print(rand_string(10))

ipan

:w !sudo tee %

ipan

Ctrl-A | (horizontal) or Ctrl-A % (vertical) to split, arrow key to navigate

• Split screen horizontally:
  • Shift+F2 or
  • Ctrl+A then |
• Split screen vertically:
  • Ctrl+F2 or
  • Ctrl+A then %
• Switch focus:
• Shift+↑ ↓ ← → or

ipan

jq will sort (-S) the whole file (.) and compare STDOUT (<()) with diff

diff <(jq -S . A.json) <(jq -S . B.json)

https://stackoverflow.com/questions/31930041/using-jq-or-alternative-command-line-tools-to-diff-json-files

ipan

Both include flags needs to go before exclude. The -z, --compress will compress the files during transfer and the -m, --prune-empty-dirs will delete empty folders in destination.

rsync -avmz --include="*/" --include="*.sh" --exclude="*" "$from" "$to"

https://stackoverflow.com/questions/11111562/rsync-copy-over-only-certain-types-of-files-using-include-option/11111793

ipan

Accepting licenses

sudo xcodebuild -license accept