WHY?

¯\_(ツ)_/¯

The Obvious Ones

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Learn & Grow

They are cool

How?

42

We got you covered

Long Vs Short

Help

Usability

Configuration

Robustness

Error messages

Status vs Output

Exit Codes

Living piece of SW

Drive Through

80/20

• Communicate clearly
• Use libraries for argument parsing
• Separate Status & Errors from Output
• Provide at least two exit code(s) 0 and one != 0

Pro-tip: In case of doubt check how git does it

Examples

Teasers

• Extract TCP/UDP data stream with Tshark
• Reporting and statistics
• Socat based test server
• rot13 ... aws pws & co
• pygments based bat
• ...