I was looking at devutils and thinking it would be nice if

1. I could use it from the command line
2. It worked on Linux
3. It was open source

So, here we go. To be clear, I don't actually care about a lot of the features it includes, and I have several others that aren't included in it, but the idea of a simple tool for conversions, generations, and formatting is appealing.

Yes, there are tools for all these things, but having a consistent syntax and one tool seems convenient.

• JSON pretty print
• JSON -> YAML -> JSON
• Line sort & dedupe
• Number base conversions
• LEB128 conversions
• UUID generation
• Hex -> ASCII -> Hex
• Bytes in almost any format to:
  • Base64 string
  • JS Array of numbers
  • ASCII
  • Hex string
• Unix time (seconds or millis) and ISO 8601 into:
  • Relative time
  • Human readable time (wtf does this mean? Is there a standard for it?)
  • ISO 8601
  • Local time
• MD5, SHA1, SHA256, SHA512
• JWT decode
• URL encode/decode
• X.509 certificate parsing
• Escape/unescape JSON
• Cron expression parsing

• Single, small binary
• Cross platform (eventually, but focus on Linux first)
• Rust
• Intuitive (to me) syntax
• Man page
• Shell completions
• Tolerant of input
• Fast
• Integrate w/ clipboard (?)
  • Option to copy output to clipboard automatically
  • Try to read from the clipboard if no input is provided

$ arst --from unix 1610000000
Unix timestamp: 1610000000
ISO 8601: 2021-01-07T20:53:20Z
Relative time: 1 week ago
Human readable time: Thursday, January 7, 2021 8:53:20 PM PST

$ arst --to iso8601 1610000000
2021-01-07T20:53:20Z

# or, if you really like typing extra...
# 
$ arst --from unix --to iso8601 1610000000
2021-01-07T20:53:20Z

$ arst --to array 0x01 0x02 0x03
[0x01, 0x02, 0x03]

$ arst --to array fffe01ab
[0xff, 0xfe, 0x01, 0xab]

$ arst --to array ff fe 01 ab
[0xff, 0xfe, 0x01, 0xab]

$ arst --to array ff;fe;01;ab
[0xff, 0xfe, 0x01, 0xab]

$ arst --to array ff:fe:01:ab
[0xff, 0xfe, 0x01, 0xab]