Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

runit-init(8) [centos man page]

runit-init(8)                                                 System Manager's Manual                                                runit-init(8)

init - a UNIX process no 1 SYNOPSIS
init [ 0 | 6 ] DESCRIPTION
runit-init is the first process the kernel starts. If runit-init is started as process no 1, it runs and replaces itself with runit(8). If runit-init is started while the system is up, it must be either called as init 0 or init 6: init 0 tells the Unix process no 1 to shutdown and halt the system. To signal runit(8) the system halt request, runit-init removes all permissions of the file /etc/runit/reboot (chmod 0), and sets the execute by owner permission of the file /etc/runit/stopit (chmod 100). Then a CONT signal is sent to runit(8). init 6 tells the Unix process no 1 to shutdown and reboot the system. To signal runit(8) the system reboot request, runit-init sets the execute by owner permission of the files /etc/runit/reboot and /etc/runit/stopit (chmod 100). Then a CONT signal is sent to runit(8). EXIT CODES
runit-init returns 111 on error, 0 in all other cases. SEE ALSO
runit(8), runsvdir(8), runsvchdir(8), sv(8), runsv(8), chpst(8), utmpset(8), svlogd(8) AUTHOR
Gerrit Pape <> runit-init(8)

Check Out this Related Man Page

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

runit - a UNIX process no 1 SYNOPSIS
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) AUTHOR
Gerrit Pape <> runit(8)
Man Page

15 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

file sysstem size problem

Hi.. i am using HPUX ..and my /usr and /var file sytem has got full... now i want to increase this file system size. so what i have to do.. 1st i have to go to init 1(single user mode) umount the LV increase the size of LV then extendfs then mount the File system and reboot to... (6 Replies)
Discussion started by: Prafulla
6 Replies

2. IP Networking

DNS daemons

Does anyone know the command to start the DNS Daemon. I looked in the /etc/init.d/inetsvc file and it tells me what the text should look like. When I go to open the corresponding files they are encoded and I can't read them. So is there a command that will start the DNS daemon? If... (8 Replies)
Discussion started by: Deuce
8 Replies

3. UNIX for Dummies Questions & Answers

Inclussion to init.d assistance

Hi all, Am trying to have an email sent on start up advising that the system has been reset. During the week the system reset itself and no email was received, below is an extract of the file /etc/init.d/sendmail . And I'm stumped to understand why the email wasn't sent. Can anyone see why... (6 Replies)
Discussion started by: Cameron
6 Replies

4. UNIX for Dummies Questions & Answers

path of init.ora

hi i would like to know the path of init.ora in AIX Server i tried with find command but i could not find it. can somebody help me with that. (8 Replies)
Discussion started by: matrixmadhan
8 Replies

5. UNIX for Dummies Questions & Answers


What is the mean of UNIX? (6 Replies)
Discussion started by: kandrade
6 Replies

6. UNIX for Dummies Questions & Answers

Need Help Understanding a Unix Command

Trying to install something. Can someone explain what this means? chmod -R a+r . chmod -R a+w logo.gif tempdir/ templates_c/ I recognize that file permissions are being changed (chmod), but beyond that, it's Greek to me. (6 Replies)
Discussion started by: chris86
6 Replies

7. UNIX for Dummies Questions & Answers

chmod 777 security risks?

Hello all, I did a considerable search of the forum and didn't find an answer so I'll ask it here. For clarity's sake I'll state that I know just enough about Unix to be Dangerous (I'm an old Clipper, VO, ASM programmer from the 80's.) I would like to install PHP driven CMS program to my... (6 Replies)
Discussion started by: Gary777
6 Replies

8. Solaris

diff between reboot and init 6 in solaris

Hi All, Does anyone tell me , is there any difference between solaris "reboot " and init 6 ...bcos in case of reboot for a system ..can i use init 6 for that instead. Thanks in advance, J (6 Replies)
Discussion started by: jegaraman
6 Replies

9. Solaris

difference between init and shutdown

Hi, Am new to solaris.Can anyone explains me the difference between using init and shutdown command. As per my knowledge shutdown will give notification to users, is there anything apart from that. thanks in advance. (6 Replies)
Discussion started by: rogerben
6 Replies

10. AIX

AIX 5.3 Boot Errors

IBM P Series #7026 Error Codes #E47E212E - init #1BA70F4E - SRC #BA431EB7 - SRC #C69F5C9B- SYSPROC #369DO49B - SYSPFS This happens on reboot the core dump fills up the root file system so I don't think it completes the dump. I can't read the core file with dbx. Thanks (6 Replies)
Discussion started by: tholmes
6 Replies

11. Linux

How to I change init levels after typing init 1

Dear all, I typed in init 1 on my redhat box as root and according to wikipedia ( 1 Single-User Mode Does not configure network interfaces, start daemons, or allow non-root logins So now I can't connect back to it. How do I change the init back to 3?... (8 Replies)
Discussion started by: z1dane
8 Replies

12. Infrastructure Monitoring

unable to shutdown solaris 10

hi folks, i have a snag, when i attempt shutdown of solaris 10 on a sunfire v240 it seems to pause for ages, and goes no further, im busy learning my way around the system so please be patient. /etc(R)-bash-3.00$ init 6 /etc(R)-bash-3.00$ svc.startd: The system is coming down. Please wait.... (7 Replies)
Discussion started by: alienkidmj12
7 Replies

13. Solaris

Why user has permissions to execute 'init 0'?

Hi all. On one workstation run Solaris 10 a simple user can to execute 'init 0' command without input (su and root password). Example: % init 0 % OK I don't understand how user can execute 'init 0' command on this workstation? 1) I checked /usr/local/etc/sudoers all lines are... (6 Replies)
Discussion started by: wolfgang
6 Replies

14. Solaris

/etc/init.d/network: shcat: not found

Hi All, I am facing this below mentioned issue, because of this i am not able send any mail using sendmail. no internet connectivity to server. /etc/init.d/network: shcat: not found Kindly help me in resolving this:) issue (8 Replies)
Discussion started by: vinay_ks
8 Replies

15. UNIX for Advanced & Expert Users

How to stop a reboot after init 6 is given by mistake?

Hi, I recently had an issue and by mistake a script of mine has initiated init 6 command, Is there a way to stop the reboot manually after init 6 is given, Your response is highly appreciated. Thanks in advance !! (9 Replies)
Discussion started by: nanz143
9 Replies