Linda Walsh wrote:
jdebert wrote:
"Traditional" sysV runlevel definitions:
0: shutdown 1: single user 2: multiuser + local only (no network) 3: multiuser + network 4: not used 5: multi user + X + network 6: halt 7 and up: not used
From various ATT UNIX manuals:
0: halt 1; single user 2: multiuser 3: runlevel 2 + network 5: runlevel 3 + X
could someone explain what multi-user meant if there was no networking to enable multiusers to log into it?
runlevels S, s, and 1 only starts up /dev/console or /dev/tty0 runlevel 2 starts up getty on all ttys runlevel 3 is run level 2 PLUS network interfaces are brought up, all appropriate network deamons (rlogin and/or sshd, etc.).
I'm just saying, in practice, level2 gave me single user, because no one can log into it except at the console and network was enabled (but not for serving functions)... no exported file systems, etc.
On a modern workstation with only one keyboard and monitor, yes, runlevels 1 and 2 are essentially similar... but they really are different.
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