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Questions tagged [system-v]

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3
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0answers
103 views

How differently from Linux kernel does a typical Unix kernel (System V, Free BSD, …) implement processes and threads?

In my previous post, about the Linux kernel, the structure task_struct represents threads i.e. light weight processes, but not processes. processes are not represented by any structure, but by ...
3
votes
1answer
229 views

Are tid and tgid always the same as pid in the output of ps?

In manpage of ps tid TID the unique number representing a dispatchable entity (alias lwp, spid). This value may also appear as: a ...
0
votes
1answer
1k views

Debian start-stop-daemon equivalent in CentOS

I have a bash script that is written in a debian-based distribution (System-V) and I want to run it under CentOS 7. There is a part of the script that runs a command as a daemon like this: start-stop-...
13
votes
1answer
4k views

What are the relations between processes, kernel threads, lightweight processes and user threads in Unix? [closed]

Unix Internal by Vahalia have figures showing the relations between processes, kernel threads, lightweight processes, and user threads. This book gives most attention to SVR4.2, and it also explores ...
0
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0answers
117 views

System V - Respawn service but don't launch at boot

I'm trying to have a System V service relaunched on exit. EDIT: Should have precised that I'm using busybox init system instead of classic systemV I found that It could be done using /etc/inittab ...
0
votes
1answer
207 views

Why are System V message queues conforming POSIX NOT called POSIX message queues?

I know that there are (at least) two types of message queues: System V message queues and POSIX message queue. To my surprise, the man page also says that the msgget system call for System V message ...
1
vote
1answer
301 views

Why is rsyslog not listed when I run service?

I'm trying to learn about rsyslog. On one of my linux boxes, I think that rsyslog has been configured to run through systemd based on this output: >systemctl status rsyslog rsyslog.service - ...
3
votes
3answers
10k views

How to run a script at shutdown on Debian 9 or Raspbian 8 (Jessie)

I would like to execute this shell script at reboot and shut down: #!/bin/sh touch /test Its permissions are -rwxr-xr-x 1 root root 22 Feb 24 09:34 /etc/init.d/te1 And it has this links /etc/rc0....
2
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0answers
3k views

Linux Vs UNIX - kernel - How to understand the difference? [closed]

In 1980's, two most prevalent operating systems came out, 1) System V created by AT&T 2) BSD created at UOC, Berkeley Some of the BSD variants are OpenBSD, FreeBSD, MAC OS X Some of the ...
0
votes
2answers
198 views

Is official generic System V ABI document from SCO?

Looking at the revision history from SCO's website, is that true SCO is the one who maintains the ABI standard? If not, who are the people maintaining the standard?
0
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1answer
65 views

Is it possible to port systemd services to sysVinit and vice versa? How much difficult it is.?

I want to use systemd services on the system which is using sysVinit. Is it possible? Is any good way to do this.?
2
votes
1answer
109 views

Behold System V; what about systems I-IV?

System V (by AT&T) is the ancestral Unix, and I have used it. But I have never read or heard anything about systems I-IV, other than they existed once upon a time in the dim past. How effective ...
0
votes
1answer
412 views

Minicom and kermit,where is my fault?

I want to transfer a big file of 70MB to a virtual machine running an ancient unix(at&t 2.1 ),no cdrom driver,no ufs disk(linux give me error when i try to mount systemV ufs,with ufs 43bsd ok),no ...
0
votes
1answer
69 views

Mathematic question for format floppies on Old sysV unix

On old sysVR4 i will format floppies as so 1.44 MB floppy mkfs -F ufs /dev/dsk/f03ht 2560 1.2MB Floppy mkfs -F ufs /dev/dsk/f13dt 2440 The 2440 and 2560 are calculated with 512*4 and 512*5 In ...
3
votes
2answers
536 views

Enabling completion with tab on an old ksh on SystemV

Is it possible to make completion with Tab like in bash? Currently I use Esc twice, can this be changed to a tab?
1
vote
0answers
132 views

what interface does lpsched provide that cups does not?

Work has a Linux stock/erp custom system that uses the Unix System V (Solaris, SCO, HP-UX) lpsched program that someone who used to work here compiled for RHEL/CentOS 5 i686 (I have no idea why or how)...
3
votes
2answers
142 views

autostarting scripts in debian

I have a service that I install as so: install -m 755 init_script /etc/init.d/spacenavd cd /etc/rc2.d ln -s ../init.d/spacenavd S99spacenavd what the init_script does is start the script: /usr/...
1
vote
1answer
95 views

Is it possible to list open SysV queues on certain files?

I have a suite of applications that communicate with each other using SysV queues. However, when I stop the application there are sometimes queues left open, which in turn causes problems next time I ...
16
votes
1answer
848 views

What is AT&T’s Link Editor Command Language?

The man page for ld makes reference to AT&T’s Link Editor Command Language, however a Google search does not offer a satisfactory explanation as to what AT&T’s Link Editor Command Language is ...
5
votes
2answers
477 views

Why is a service being started if it isn't mentioned in /etc/init.d?

After a clean install of Fedora 17 and distcc-server, I did a service distccd start, which completed successfully. man service indicates that it would merely be running the distccd script at /etc/...
9
votes
1answer
2k views

How do you pronounce System V and SysV?

Is the V in System V and SysV (and sysvinit, etc) pronounced "vee" or "five"?
5
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1answer
1k views

Resources System V vs BSD

I'm searching for some detailed resources about the differences of System V and BSD concepts. For example: Interprocess Communication Sockets vs TLI ... Some sort of pro/cons discussion with ...