[[Ubuntu]] 22.04 LTSにインストール。
```console
$ wget https://github.com/watchexec/watchexec/releases/download/v1.20.6/watchexec-1.20.6-x86_64-unknown-linux-musl.deb
$ sudo apt install ./watchexec-1.20.6-x86_64-unknown-linux-musl.deb
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'watchexec-cli' instead of './watchexec-1.20.6-x86_64-unknown-linux-musl.deb'
The following NEW packages will be installed:
watchexec-cli
0 upgraded, 1 newly installed, 0 to remove and 2 not upgraded.
Need to get 0 B/9104 kB of archives.
After this operation, 15.1 MB of additional disk space will be used.
Get:1 /home/ubuntu/tmp/watchexec-1.20.6-x86_64-unknown-linux-musl.deb watchexec-cli amd64 1.20.6 [9104 kB]
Selecting previously unselected package watchexec-cli.
(Reading database ... 168989 files and directories currently installed.)
Preparing to unpack .../watchexec-1.20.6-x86_64-unknown-linux-musl.deb ...
Unpacking watchexec-cli (1.20.6) ...
Setting up watchexec-cli (1.20.6) ...
Processing triggers for man-db (2.10.2-1) ...
Processing triggers for hicolor-icon-theme (0.17-2) ...
needrestart is being skipped since dpkg has failed
N: Download is performed unsandboxed as root as file '/home/ubuntu/tmp/watchexec-1.20.6-x86_64-unknown-linux-musl.deb' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
```
Permissionエラーが若干気になるが、一旦捨ておく。。