python#

run raw Python code directly on the command line#

python -c "print('This is a message from Python!')"

print resolved Python executable’s filepath#

python -c "import sys; print(sys.executable)"

print resolved Python executable’s version#

python -c "import sys; print(sys.version)"

print resolved Python executable’s import path#

python -c "import sys; print('\n'.join(sys.path))"

print Python environment configuration#

python -m site

pretty-print JSON#

python -m json.tool file.json

validate JSON#

cat file.json | python -m json.tool > /dev/null

base64 encode a string#

echo "secret" | python -m base64

base64 decode a string#

echo "c2VjcmV0Cg==" | python -m base64 -d

create and administer a sqlite3 database#

python -m sqlite3 my.db

test DNS resolution#

python -c "import socket; print(socket.gethostbyname('example.com'))"

run a TCP server on port 9999 that serves 127.0.0.1#

python -c "import socket as s; sock=s.socket(); sock.bind(('127.0.0.1',9999)); sock.listen(1); print(sock.accept())"

run a TCP server on port 9999 that serves external traffic#

python -c "import socket as s; sock=s.socket(); sock.bind(('0.0.0.0',9999)); sock.listen(1); print(sock.accept())"

run an HTTP server on port 8000 that serves 127.0.0.1#

python -m http.server 8000

run an HTTP server on port 8000 that serves external traffic#

python -m http.server 8000 --bind 0.0.0.0

run an HTTP server on port 8000 that serves a specific directory#

python -m http.server 8000 --directory /tmp