定期的に利用するのでメモ
-h オプションで確認可能
$ ls -lh
合計 36M
-rw-rw-r-- 1 username username 2.3K 6月 6 13:44 README.md
-rw-rw-r-- 1 username username 33M 6月 6 13:42 test1.model
-rw-rw-r-- 1 username username 3.2M 6月 6 13:42 test2.model
$ tree -h
.
└── [4.0K] test
├── [2.3K] README.md
├── [ 32M] test1.model
└── [3.1M] test2.model1 directory, 3 files
バージョン確認
$ cat /etc/issue
Ubuntu 20.04.4 LTS \n \l
$ ls --version
ls (GNU coreutils) 8.30
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.作者 Richard M. Stallman および David MacKenzie。
$ tree --version
tree v1.8.0 (c) 1996 - 2018 by Steve Baker, Thomas Moore, Francesc Rocher, Florian Sesser, Kyosuke Tokoro