Redhat Linux 9 Lab: Tóm tắt và thực hành vài kỹ năng Linux cơ bản

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Red Hat Enterprise Linux Administration
https://www.youtube.com/playlist?list=PLIpLw6v7Z1qnIUiJipjgYEHwxF16TZbCN
2023 10 29 00 07 04

Lab 2.1
1. Modify your shell environment so that on every subshell that
is started, a variable is set. The name of the variable should
be COLOR, and the value should be set to red. Verify that it is
working.
2. Use the appropriate tools to find the command that you can
use to change a user password. Do you need root permissions
to use this command?
3. From your home directory, type the command ls -al wergihl
* and ensure that errors as well as regular output are
redirected to a file with the name /tmp/lsoutput.