Um Olhar Sociotécnico sobre a Engenharia de Software

As novas tecnologias modificam a forma e a substância do
controle, da participação e da coesão social. Porém, ao fazê-lo, são também modificadas pela experiência social, de sorte que o técnico e o social constituem um movimento de "co-modificação", somente percebido por uma aproximação concomitantemente social e técnica, por um olhar sociotécnico. O artigo pretende apresentar algumas das principais características deste olhar, bem como discutir os desafios que coloca para a engenharia de software.

Init Level para Boot

/etc/inittab

=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x=x

#
# /etc/inittab
#
# Copyright (c) 1996-2002 SuSE Linux AG, Nuernberg, Germany. All rights reserved.
#
# Author: Florian La Roche, 1996
# Please send feedback to http://www.suse.de/feedback
#
# This is the main configuration file of /sbin/init, which
# is executed by the kernel on startup. It describes what
# scripts are used for the different run-levels.
#
# All scripts for runlevel changes are in /etc/init.d/.
#
# This file may be modified by SuSEconfig unless CHECK_INITTAB
# in /etc/sysconfig/suseconfig is set to "no"
#

# The default runlevel is defined here
id:5:initdefault:

# First script to be executed, if not booting in emergency (-b) mode
si::bootwait:/etc/init.d/boot

# /etc/init.d/rc takes care of runlevel handling
#
# runlevel 0 is System halt (Do not use this for initdefault!)
# runlevel 1 is Single user mode
# runlevel 2 is Local multiuser without remote network (e.g. NFS)
# runlevel 3 is Full multiuser with network
# runlevel 4 is Not used
# runlevel 5 is Full multiuser with network and xdm
# runlevel 6 is System reboot (Do not use this for initdefault!)
#
l0:0:wait:/etc/init.d/rc 0
l1:1:wait:/etc/init.d/rc 1
l2:2:wait:/etc/init.d/rc 2
l3:3:wait:/etc/init.d/rc 3
#l4:4:wait:/etc/init.d/rc 4
l5:5:wait:/etc/init.d/rc 5
l6:6:wait:/etc/init.d/rc 6

# what to do in single-user mode
ls:S:wait:/etc/init.d/rc S
~~:S:respawn:/sbin/sulogin

# what to do when CTRL-ALT-DEL is pressed
ca::ctrlaltdel:/sbin/shutdown -r -t 4 now

# special keyboard request (Alt-UpArrow)
# look into the kbd-0.90 docs for this
kb::kbrequest:/bin/echo "Keyboard Request -- edit /etc/inittab to let this work."

# what to do when power fails/returns
pf::powerwait:/etc/init.d/powerfail start
pn::powerfailnow:/etc/init.d/powerfail now
#pn::powerfail:/etc/init.d/powerfail now
po::powerokwait:/etc/init.d/powerfail stop

# for ARGO UPS
sh:12345:powerfail:/sbin/shutdown -h now THE POWER IS FAILING

# getty-programs for the normal runlevels
# :::
# The "id" field MUST be the same as the last
# characters of the device (after "tty").
1:2345:respawn:/sbin/mingetty --noclear tty1
2:2345:respawn:/sbin/mingetty tty2
3:2345:respawn:/sbin/mingetty tty3
4:2345:respawn:/sbin/mingetty tty4
5:2345:respawn:/sbin/mingetty tty5
6:2345:respawn:/sbin/mingetty tty6
#
#S0:12345:respawn:/sbin/agetty -L 9600 ttyS0 vt102
#cons:1235:respawn:/sbin/smart_agetty -L 38400 console

#
# Note: Do not use tty7 in runlevel 3, this virtual line
# is occupied by the programm xdm.
#

# This is for the package xdmsc, after installing and
# and configuration you should remove the comment character
# from the following line:
#7:3:respawn:+/etc/init.d/rx tty7


# modem getty.
# mo:235:respawn:/usr/sbin/mgetty -s 38400 modem

# fax getty (hylafax)
# mo:35:respawn:/usr/lib/fax/faxgetty /dev/modem

# vbox (voice box) getty
# I6:35:respawn:/usr/sbin/vboxgetty -d /dev/ttyI6
# I7:35:respawn:/usr/sbin/vboxgetty -d /dev/ttyI7

# end of /etc/inittab