-bash-5.0$ ls -la total 0 drwxr-xr-x 2 root root 0 Jul 10 01:52 . drwxrwxrwx 27 root root 0 Jul 10 01:52 .. -rw-r--r-- 1 root root 0 Jul 10 01:52 foo -rw-rw-rw- 1 root root 0 Jul 10 01:52 id -r--r--r-- 1 root root 0 Jul 10 01:52 jiffies -bash-5.0$ echo hello-world > foo -bash: foo: Permission denied -bash-5.0$ echo hello-world | sudo tee foo hello-world -bash-5.0$ cat foo hello-world -bash-5.0$ cat id tomoron-bash-5.0$ echo -n patate > id -bash: echo: write error: Invalid argument -bash-5.0$ echo -n tomoron > id -bash-5.0$ cat jiffies 4295652460 -bash-5.0$ cat jiffies 4295653284 -bash-5.0$