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Shell Programming and Scripting
Write a shell program with input
Post 302745119 by 1988PF on Sunday 16th of December 2012 07:15:49 PM
12-16-2012
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int x;
cin >> x;
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LEARN ABOUT SUSE
runit
runit(8) System Manager's Manual runit(8) NAME
runit - a UNIX process no 1 SYNOPSIS
runit DESCRIPTION
runit must be run as Unix process no 1. It performs the system's booting, running, and shutdown in three stages: STAGE 1 runit runs /etc/runit/1 and waits for it to terminate. The system's one time tasks are done here. /etc/runit/1 has full control of /dev/console to be able to start an emergency shell if the one time initialization tasks fail. If /etc/runit/1 crashes, or exits 100, runit will skip stage 2 and enter stage 3. STAGE 2 runit runs /etc/runit/2, which should not return until system shutdown; if it crashes, or exits 111, it will be restarted. Normally /etc/runit/2 starts runsvdir(8). runit is able to handle the ctrl-alt-del keyboard request in stage 2, see below. STAGE 3 If runit is told to shutdown the system, or stage 2 returns, it terminates stage 2 if it is running, and runs /etc/runit/3. The systems tasks to shutdown and possibly halt or reboot the system are done here. If stage 3 returns, runit checks if the file /etc/runit/reboot exists and has the execute by owner permission set. If so, the system is rebooted, it's halted otherwise. CTRL-ALT-DEL If runit receives the ctrl-alt-del keyboard request and the file /etc/runit/ctrlaltdel exists and has the execute by owner permission set, runit runs /etc/runit/ctrlaltdel, waits for it to terminate, and then sends itself a CONT signal. SIGNALS
runit only accepts signals in stage 2. If runit receives a CONT signal and the file /etc/runit/stopit exists and has the execute by owner permission set, runit is told to shut- down the system. if runit receives an INT signal, a ctrl-alt-del keyboard request is triggered. SEE ALSO
runit-init(8), runsvdir(8), runsvchdir(8), sv(8), runsv(8), chpst(8), utmpset(8), svlogd(8) http://smarden.org/runit/ AUTHOR
Gerrit Pape <pape@smarden.org> runit(8)