Simon Law 92bfda580c cmd/tailscale/cli: fix time in tailscale routecheck (#19956)
When running `tailscale netcheck`, the reported timestamp used to be
in UTC and formatted according to RFC 3339 with a `T` to separate the
date from the time:

	sfllaw@h2co3:~$ tailscale netcheck | head -n3

	Report:
		* Time: 2026-06-01T21:12:32.252620138Z

This is machine-readable time leaking out to the user interface. Times
in normal commands are formatted for humans to read:

	sfllaw@h2co3:~$ date
	Mon 01 Jun 2026 02:39:14 PM PDT
	sfllaw@h2co3:~$ journalctl -t tailscaled | tail -n1
	Jun 01 14:35:21 h2co3 tailscaled[3328921]: wgengine: sending TSMP disco key advertisement to 100.90.144.102
	sfllaw@h2co3:~$ timedatectl show
	Timezone=America/Los_Angeles
	LocalRTC=no
	CanNTP=yes
	NTP=yes
	NTPSynchronized=yes
	TimeUSec=Mon 2026-06-01 14:38:32 PDT
	RTCTimeUSec=Mon 2026-06-01 14:38:32 PDT
	sfllaw@h2co3:~$ uptime --since
	2026-05-15 07:37:45

This PR makes the times printed by the CLI commands consistent:

- For `tailscale routecheck`, it now prints local time as
  `2026-05-15 07:37:45-07:00`.
- For `netlogfmt`, it has always printed local time with a space,
  but now includes the time zone.
- All machine-readable outputs continue to be standard RFC 3339 in
  UTC, i.e. `--format=json`.

As part of a general cleanup, this PR also adds standard common
time.Format layouts as tstime constants.

Fixes #19928

Signed-off-by: Simon Law <sfllaw@tailscale.com>
2026-06-01 16:12:08 -07:00
2026-06-01 12:09:49 -07:00
2026-03-27 08:41:33 +00:00
2026-01-27 16:15:17 -08:00
2026-06-01 12:53:18 -07:00
2026-06-01 12:53:18 -07:00
2026-06-01 12:53:18 -07:00
2026-06-01 12:53:18 -07:00
2026-06-01 12:53:18 -07:00

Tailscale

https://tailscale.com

Private WireGuard® networks made easy

Overview

This repository contains the majority of Tailscale's open source code. Notably, it includes the tailscaled daemon and the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows, macOS, and to varying degrees on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's code, but this repo doesn't contain the mobile GUI code.

Other Tailscale repos of note:

For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.

Using

We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.

Other clients

The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.

Building

We always require the latest Go release, currently Go 1.26. (While we build releases with our Go fork, its use is not required.)

go install tailscale.com/cmd/tailscale{,d}

If you're packaging Tailscale for distribution, use build_dist.sh instead, to burn commit IDs and version info into the binaries:

./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled

If your distro has conventions that preclude the use of build_dist.sh, please do the equivalent of what it does in your distro's way, so that bug reports contain useful version information.

Bugs

Please file any issues about this code or the hosted service on the issue tracker.

Contributing

PRs welcome! But please file bugs. Commit messages should reference bugs.

We require Developer Certificate of Origin Signed-off-by lines in commits.

See commit-messages.md (or skim git log) for our commit message style.

About Us

Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:

WireGuard is a registered trademark of Jason A. Donenfeld.

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