tmux-backup

A backup & restore solution for Tmux sessions.

Version requirement: rustc 1.70+

Features

• Backup and restore of your tmux environment:
  • tmux sessions windows, panes, with layout, titles & pane history
  • current and last session.
• Fast: less than 1 sec for 16 sessions, 45 windows and 80 panes.
• Show the catalog of backups, with age, file size, content description & archive format
• 2 strategies are available:
  • keep the n most recent backups
  • classic backup strategy:
    • the lastest backup per hour for the past 24 hours (max 23 backups - exclude the past hour),
    • the lastest backup per day for the past 7 days (max 6 backups - exclude the past 24 hours),
    • the lastest backup per week of the past 4 weeks (max 3 backups - exclude the past week),
    • the lastest backup per month of this year (max 11 backups - exclude the past month).
• Because you decide where backups are stored, you can use both strategies, combining the benefits of high-frequency backups and on demand backups like in tmux-resurrect.

Getting started

After installation (see below), you can either use it from the command line, or via tmux bindings.

The catalog is located by default in $XDG_STATE_HOME/tmux-backup/, or §HOME/.state/tmux-backup otherwise. The default strategy is "most-recent", but you can change it with --strategy classic. Check usage with tmux-backup --help for detailed help.

View the catalog of existing backups

$ tmux-backup catalog list --details
Strategy: KeepMostRecent: 10
Location: `$HOME/.local/state/tmux-backup`

     NAME                             AGE         STATUS       FILESIZE    VERSION  CONTENT
 11. backup-20220907T224553.156103.tar.zst   2 days      purgeable    644.17 kB   1.0      16 sessions 43 windows 79 panes
 10. backup-20220907T224926.103771.tar.zst   2 days      retainable   644.38 kB   1.0      16 sessions 43 windows 79 panes
  9. backup-20220908T092341.125258.tar.zst   2 days      retainable   654.76 kB   1.0      16 sessions 43 windows 79 panes
  8. backup-20220909T224742.781818.tar.zst   18 hours    retainable   599.64 kB   1.0      16 sessions 42 windows 77 panes
  7. backup-20220909T225158.305403.tar.zst   18 hours    retainable   600.32 kB   1.0      16 sessions 42 windows 79 panes
  6. backup-20220910T152551.807672.tar.zst   1 hour      retainable   608.79 kB   1.0      16 sessions 43 windows 80 panes
  5. backup-20220910T165118.250800.tar.zst   29 minutes  retainable   614.16 kB   1.0      16 sessions 43 windows 80 panes
  4. backup-20220910T171812.893389.tar.zst   2 minutes   retainable   614.33 kB   1.0      16 sessions 43 windows 80 panes
  3. backup-20220910T172016.924711.tar.zst   11 seconds  retainable   614.44 kB   1.0      16 sessions 43 windows 80 panes
  2. backup-20220910T172019.320809.tar.zst   8 seconds   retainable   614.42 kB   1.0      16 sessions 43 windows 80 panes
  1. backup-20220910T172024.141993.tar.zst   3 seconds   retainable   614.38 kB   1.0      16 sessions 43 windows 80 panes

11 backups: 10 retainable, 1 purgeable

If you installed the plugin config into tmux, then the default tmux bindings for listing backups are

• prefix + b + l to show the simple catalog
• prefix + b + L to show the detailed catalog (adds the filesize, version & content columns)

Both of these bindings will open a tmux popup showing the catalog content.

Save the current tmux environment

$ tmux-backup save
✅ 16 sessions 43 windows 80 panes, persisted to `/Users/graelo/.local/state/tmux-backup/backup-20220910T171812.893389.tar.zst`

By default, the tmux binding for saving a new backup are

• prefix + b + s save and compact (delete purgeable backups)
• prefix + b + b save but not compact the catalog

Both of these bindings will print the same report as above in the tmux status bar.

Restore from a backup

Typing tmux-backup restore in your shell outside of tmux will

• start a tmux server if none is running
• restore all sessions from the latest backup
• but you still have to tmux attach -t <your-last-session>

The same command typed in a shell inside tmux will erase session 0 (the default start session) and restore your tmux environment in place.

By default, the tmux binding for restoring the latest backup is

• prefix + b + r restore sessions from the latest backup

Installation

Installing the binary

On macOS

brew install graelo/homebrew-tap/tmux-backup  # will also install shell completions

On linux

curl \
    https://github.com/graelo/tmux-backup/releases/download/v0.4.0/tmux-backup-x86_64-unknown-linux-gnu.tar.xz \
    | tar xf - > /usr/local/bin/tmux-backup
chmod +x /usr/local/bin/tmux-backup

On linux, to install completions, type

tmux-backup generate-completion zsh|bash|fish > /path/to/your/completions/folder

Installing the tmux plugin hook

Type

mkdir ~/.tmux/plugins/tmux-backup
tmux-backup init > ~/.tmux/plugins/tmux-backup/tmux-backup.tmux

If you don't use tpm, just add this to your .tmux.conf:

source-file ~/.tmux/plugins/tmux-backup/tmux-backup.tmux

Alternatively, if you use tpm, declare the tmux-backup plugin to TPM in your ~/.tmux.conf:

set -g @tpm_plugins '              \
  tmux-plugins/tpm                 \
  tmux-plugins/tmux-backup         \  <-- here
  tmux-plugins/tmux-copyrat        \
  tmux-plugins/tmux-yank           \
  tmux-plugins/tmux-resurrect      \
  tmux-plugins/tmux-sessionist     \
'

The next time you start tmux, the tmux-backup.tmux configuration will be loaded.

Caveats

• This is a beta version
• Does not handle multiple clients: help is welcome if you have clear scenarios for this.
• Does not handle session groups: help is also welcome.

License

Licensed under either of

• Apache License, Version 2.0
• MIT license

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.