Troubleshoot system hardware and software.

Skill drills that exercise this task

• CSCD240-E1-A-Q33 SSH-in; confirm machine name, kernel version, and architecture in one command.
• CSCD240-E1-A-Q43 Forgot sudo on previous command. Re-run with sudo prepended without retyping.
• CSCD240-E1-A-Q44 Bash keystroke that begins reverse-incremental history search.
• CSCD240-E1-B-Q02 Landing on a target; identify host kernel + architecture in one command.
• CSCD240-E1-B-Q03 Print your current username.
• CSCD240-E1-B-Q47 Re-run the previous command with sudo prepended without retyping.
• CSCD240-E1-B-Q48 Bash keystroke to begin reverse-incremental history search.