hwatch
hwatch - alternative watch command.
Description
hwatch is a alternative watch command.
That records the result of command execution and can display it history and diffs.
Features
- 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).
- Support ANSI color code.
- Execution result can be scroll.
Install
macOS (brew)
brew install hwatch
macOS (MacPorts)
sudo port install hwatch
Arch Linux (AUR)
paru -S hwatch
Cargo Install
cargo install hwatch
Usage
hwatch 0.3.10
blacknon <[email protected]>
A modern alternative to the watch command, records the differences in execution results and can
check this differences at after.
USAGE:
hwatch [OPTIONS] <command>...
ARGS:
<command>...
OPTIONS:
-B, --beep
beep if command has a change result
--mouse
enable mouse wheel support. With this option, copying text with your terminal may be
harder. Try holding the Shift key.
--tab_size <tab_size>
Specifying tab display size [default: 4]
-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}.
-c, --color
interpret ANSI color and style sequences
-d, --differences
highlight changes between updates
-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.
-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]
-h, --help
Print help information
-V, --version
Print version information
watch window keybind
| Key | Action |
|---|---|
| β, β | move selected screen(history/watch). |
| β | select watch screen. |
| β | select history screen. |
| H | show help window. |
| C | toggle color. |
| D | switch diff mode. |
| N | switch line number display. |
| 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). |
| F1 | only stdout print. |
| F2 | only stderr print. |
| F3 | print output. |
| + | increase interval. |
| - | decrease interval. |
| Tab | toggle select screen(history/watch). |
| / | filter history by string. |
| * | filter history by regex. |
| Esc | unfiltering. |
Configuration
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"Example
interval 10 second
Use the -n option to specify the command execution interval.
hwatch -n 3 command...
logging output
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.
Use shell function
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...
ANSI Color code
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...
diff view
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...watch diff
line diff
word diff
history filtering
You can filter history as a string with / key and as a regular expression with * key.