On a SysV-init system you must change which runlevel the machine boots into, by editing the entry whose action field is initdefault. Type the full path of the file that holds that entry.
LPIC-1 Exam 102-500, objective 110. Security easy
Machine-checked — no person has signed for it. This question was read against the source cited below by an automated pass, which found no contradiction. That is a weaker claim than it sounds: the same kind of process wrote the question, so it can confirm its own mistake.
Treat it as a good draft rather than as settled fact, and read the source below before you rely on it. It is not used in mock exams here — only questions a person has signed for are.
How these questions are written — where each question comes from, what the verification ledger records, and what happens when one is found wrong.
Answer
Type the answer.
Accepted answer
/etc/inittab
Case sensitive — Linux is, and grading LS as ls would teach a falsehood.
Why
init reads /etc/inittab at boot and after a telinit q. Each line has four colon-separated fields: an identifier, the runlevels it applies to, an action keyword such as initdefault, sysinit, wait, once or respawn, and the process to run. The initdefault entry names the runlevel to enter when no runlevel is given on the kernel command line, and its process field is left empty. systemd hosts replace this file with the default.target symlink.
Where this comes from
- Cited
- manual page inittab(5)
Practise this
Reading one question is not practice. The trainer will draw a short set from objective 110 and space the ones you get wrong.
More questions on this objective
- During an audit you must list every file under /usr that has the set-user-ID bit set, regardless of what its other permission bits are. Which command does that? machine-checked
- You locked the password of the account `intern` and confirmed that its hash in /etc/shadow now begins with an exclamation mark. The intern nevertheless still reaches a shell on the host over SSH, without being prompted for anything. What is going on, and what actually stops it? machine-checked
- You have just been added to a sudo rule on a host and want sudo itself to report which commands you are allowed to run there, without running any of them. Type the complete command. machine-checked
- A daemon started from your bash session keeps hitting a 'too many open files' error. Which command raises the limit on open file descriptors for the current shell and the processes it starts to 4096? machine-checked
- You are about to take a server down for maintenance and want ordinary users refused at login for the next hour, with an explanatory message, while root can still get in. On a system using PAM's pam_nologin, creating which file achieves this? machine-checked
- Which two commands report the users who are logged in right now, rather than a history of past logins? (Choose two.) machine-checked