hwatch - alternative watch command.
hwatch is a alternative watch command.
That records the result of command execution and can display it history and diffs.
- Can keep the history when the difference, occurs and check it later.
- Can check the difference in the history. The display method can be changed in real time.
- Can output the execution result as log (json format).
- Custom keymaps are available.
- Support ANSI color code.
- Execution result can be scroll.
- Not only as a TUI application, but also to have the differences output as standard output.
- If a difference occurs, you can have the specified command additionally executed.
brew install hwatch
sudo port install hwatch
paru -S hwatch
cargo install hwatch
$ hwatch --help
A modern alternative to the watch command, records the differences in execution results and can check this differences at after.
Usage: hwatch [OPTIONS] [command]...
Arguments:
[command]...
Options:
-b, --batch output exection results to stdout
-B, --beep beep if command has a change result
--border Surround each pane with a border frame
--with-scrollbar When the border option is enabled, display scrollbar on the right side of watch pane.
--mouse enable mouse wheel support. With this option, copying text with your terminal may be harder. Try holding the Shift key.
-c, --color interpret ANSI color and style sequences
-r, --reverse display text upside down.
-C, --compress Compress data in memory.
-t, --no-title hide the UI on start. Use `t` to toggle it.
-N, --line-number show line number
--no-help-banner hide the "Display help with h key" message
-x, --exec Run the command directly, not through the shell. Much like the `-x` option of the watch command.
-O, --diff-output-only Display only the lines with differences during `line` diff and `word` diff.
-A, --aftercommand <after_command> Executes the specified command if the output changes. Information about changes is stored in json format in environment variable ${HWATCH_DATA}.
-l, --logfile [<logfile>] logging file
-s, --shell <shell_command> shell to use at runtime. can also insert the command to the location specified by {COMMAND}. [default: "sh -c"]
-n, --interval <interval> seconds to wait between updates [default: 2]
-L, --limit <limit> Set the number of history records to keep. only work in watch mode. Set `0` for unlimited recording. (default: 5000) [default: 5000]
--tab-size <tab_size> Specifying tab display size [default: 4]
-d, --differences [<differences>] highlight changes between updates [possible values: none, watch, line, word]
-o, --output [<output>] Select command output. [default: output] [possible values: output, stdout, stderr]
-K, --keymap <keymap> Add keymap
-h, --help Print help
-V, --version Print version
Watch mode keybind(Default).
| Key | Action |
|---|---|
| ↑, ↓ | move selected screen(history/watch). |
| pageup, pagedn | move selected screen(history/watch). |
| home, end | move selected screen(history/watch). |
| Tab | toggle select screen(history/watch). |
| ← | select watch screen. |
| → | select history screen. |
| H | show help window. |
| B | toggle enable/disable border. |
| S | toggle enable/disable border scrollbar. |
| C | toggle color. |
| N | switch line number display. |
| R | toggle reverse mode. |
| M | toggle mouse support. |
| D | switch diff mode. |
| T | toggle the UI (history pane and header). |
| Backspace | toggle the history pane. |
| Q | exit hwatch. |
| 0 | disable diff. |
| 1 | switch watch type diff. |
| 2 | switch line type diff. |
| 3 | switch word type diff. |
| O | switch output mode(output->stdout->stderr). |
| Shift+O | show only lines with differences(line/word diff mode only). |
| Shift+S | show summary infomation in history. |
| F1 | only stdout print. |
| F2 | only stderr print. |
| F3 | print output. |
| + | increase interval. |
| - | decrease interval. |
| / | filter history by string. |
| * | filter history by regex. |
| Esc | unfiltering. |
| Ctrl+c | cancel. |
Can customize key bindings by using the -K Option.
Write it in the format keybind=funciton.
hwatch -K ctrl-p=history_pane_up -K ctrl-n=history_pane_down command...Keybind functions that can be specified are as follows.
| function | description |
|---|---|
| up | Move up |
| watch_pane_up | Move up in watch pane |
| history_pane_up | Move up in history pane |
| down | Move down |
| watch_pane_down | Move down in watch pane |
| history_pane_down | Move down in history pane |
| page_up | Move page up |
| watch_pane_page_up | Move page up in watch pane |
| history_pane_page_up | Move page up in history pane |
| page_down | Move page down |
| watch_pane_page_down | Move page down in watch pane |
| history_pane_page_down | Move page down in history pane |
| move_top | Move top |
| watch_pane_move_top | Move top in watch pane |
| history_pane_move_top | Move top in history pane |
| move_end | Move end |
| watch_pane_move_end | Move end in watch pane |
| history_pane_move_end | Move end in history pane |
| toggle_forcus | Toggle forcus window |
| forcus_watch_pane | Forcus watch pane |
| forcus_history_pane | Forcus history pane |
| quit | Quit hwatch |
| reset | filter reset |
| cancel | Cancel |
| help | Show and hide help window |
| toggle_color | Toggle enable/disable ANSI Color |
| toggle_line_number | Toggle enable/disable Line Number |
| toggle_reverse | Toggle enable/disable text reverse |
| toggle_mouse_support | Toggle enable/disable mouse support |
| toggle_view_pane_ui | Toggle view header/history pane |
| toggle_view_header_pane | Toggle view header pane |
| toggle_view_history_pane | Toggle view history pane |
| toggle_border | Toggle enable/disable border |
| toggle_scroll_bar | Toggle enable/disable scroll bar |
| toggle_diff_mode | Toggle diff mode |
| set_diff_mode_plane | Set diff mode plane |
| set_diff_mode_watch | Set diff mode watch |
| set_diff_mode_line | Set diff mode line |
| set_diff_mode_word | Set diff mode word |
| set_diff_only | Set diff line only (line/word diff only) |
| toggle_output_mode | Toggle output mode |
| set_output_mode_output | Set output mode output |
| set_output_mode_stdout | Set output mode stdout |
| set_output_mode_stderr | Set output mode stderr |
| togge_history_summary | Toggle history summary |
| interval_plus | Interval +0.5sec |
| interval_minus | Interval -0.5sec |
| change_filter_mode | Change filter mode |
| change_regex_filter_mode | Change regex filter mode |
If you always want to use some command-line options, you can set them in the
HWATCH environment variable. For example, if you use bash, you can add
the following to your .bashrc:
export HWATCH="--no-title --color --no-help-banner --border --with-scrollbar"Use the -n option to specify the command execution interval.
hwatch -n 3 command...
The command execution result can be output as a log in json format.
hwatch -n 3 -l hwatch_log.json command...When you check the json log, you can easily check it by using this script.
If you want the shell function to be executed periodically, you can specify the shell command to be executed with -s as follows.
# bash
hwatch -n 3 -s 'bash -c "source ~/.bashrc"; {COMMAND}' command...
# zsh
hwatch -n 3 -s 'zsh -c "source ~/.zshrc"; {COMMAND}' command...If you want to see output colored with ANSI color code, enable color mode.
To enable color mode, run hwatch with the -c option.
Alternatively, you can enable / disable the color mode with the C key during execution.
hwatch -n 3 -c command...To enable color mode, run hwatch with the -d option.
There are several "diff modes" available. Switching can be done with the D key.
hwatch -n 3 -d command...
You can filter history as a string with / key and as a regular expression with * key.
You can have command diffs output directly to stdout instead with -b option of getting them as a TUI app.
hwatch -b command...