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it(8) [osf1 man page]

it(8)							      System Manager's Manual							     it(8)

NAME
it - configure a system after installation SYNOPSIS
/sbin/it DESCRIPTION
The it program executes scripts before transferring control of the system to the user, typically before the first user logs in. The it program executes programs that collect information such as system name, passwords, timezone, and current date. A system can be in a run level at any given time; each run level has a specific group of processes that run at that level. The init program operates in one of four run levels: 0, s, 2, or 3. The run level changes when init is invoked by a privileged user. The it program is run from /etc/inittab whenever the system is booted or rebooted, or when a level transition occurs for some other reason, such as within init3. The it program first determines which run level the system is coming up under. Next it turns on shared libraries and swap and then searches for any /sbin/it.d/run-level directories, where run-level names a system run level; for example, 2.d, 3.d, 23.d, and so forth. If any such directories exist, it collects the names of all files in those directories. These files are typically links to files in the /sbin/it.d/bin directory and are created beforehand by itruns(8). After collecting the file names, it sorts them, eliminates duplicate references, orders the names as specified by the data file /sbin/it.d/data/options.mask, executes the files, and finally removes the files it executed. After all the files collected from the run level directories have been handled, it exits. The /sbin/it.d/data/options.mask file contains a single line with a list of file names separated by colons. The it command executes col- lected files in the order in which they appear from left to right in the options.mask file. Programs not listed in the options.mask file are executed after those defined in options.mask. These "unspecified" programs are run in the order into which they were initially sorted; that order is controlled by the LC_COLLATE environmental variable and the specifications in the /usr/lib/nls/loc/locale files. FILES
Specifies execution priorities of files to be run by it Files to be linked by itruns(8) for execution by it SEE ALSO
Commands: init(8), itruns(8), rc0(8), rc2(8), rc3(8), who(1) it(8)

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rc3(8)							      System Manager's Manual							    rc3(8)

NAME
rc3 - Run command script executed when entering a multiuser run level SYNOPSIS
rc3 DESCRIPTION
The rc3 script contains run commands that enable initialization of the system to a multiuser state; run level 3. In addition to commands listed within the script itself, rc3 contains instructions to run certain commands found in the /sbin/rc3.d directory. The script defines the conditions under which the commands execute; some commands run if the system is booting, other commands execute if the system is chang- ing run levels. By convention, files in the rc3.d directory begin with either the letter "S" or the letter "K" and are followed by a two-digit number and a filename; for example: S00inet S55inetd S70mount S65lpd In general, the system starts commands that begin with the letter "S" and stops commands that begin with the letter "K." Commands that begin with the letter "K" run only when the system is changing run levels from a higher to a lower level. Commands that begin with the letter "S" run in all cases. The numbering of commands in the /sbin/rc3.d directory is important since the numbers are sorted and the com- mands are run in ascending order. Files in the /sbin/rc3.d directory are normally links to files in the /etc/init.d directory. An entry in the inittab file causes the system to execute the rc3 run commands, for example: s3:3:wait:/sbin/rc3 < /dev/console > /dev/con- sole 2>&1 The following operations are typical of those that result from executing the rc3 script and the commands located in the /sbin/rc3.d direc- tory. The operation depends on which state the system is entering or exiting. Setting the time zone Checking the current run level Start- ing network services and daemons Starting (or stopping) system services and daemons Mounting file systems Setting the TIMEZONE variable is one of the first operations completed by the rc3 script. This action provides the default time zone for subsequent commands. FILES
Specifies the command path Specifies the directory of commands that correspond to the run level RELATED INFORMATION
Commands: init(8), rc0(8), rc2(8) delim off rc3(8)
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