On OSes with SysvInit, are `reboot` and `halt` symlinks to some executables?
On OSes with Systemd, reboot and halt are symlinks to systemctl.
On OSes with SysvInit, what are reboot and halt symlinks to? Is it telinit? Or are they themselves executable files, not symlinks?
Thanks.
init sysvinit
asked Dec 19 '18 at 0:33
Tim
26k74246455
add a comment |
On OSes with Systemd, reboot and halt are symlinks to systemctl.
On OSes with SysvInit, what are reboot and halt symlinks to? Is it telinit? Or are they themselves executable files, not symlinks?
Thanks.
init sysvinit
asked Dec 19 '18 at 0:33
Tim
26k74246455
add a comment |
On OSes with Systemd, reboot and halt are symlinks to systemctl.
On OSes with SysvInit, what are reboot and halt symlinks to? Is it telinit? Or are they themselves executable files, not symlinks?
Thanks.
init sysvinit
asked Dec 19 '18 at 0:33
Tim
26k74246455
On OSes with Systemd, reboot and halt are symlinks to systemctl.
On OSes with SysvInit, what are reboot and halt symlinks to? Is it telinit? Or are they themselves executable files, not symlinks?
Thanks.
init sysvinit
init sysvinit
asked Dec 19 '18 at 0:33
Tim
26k74246455
asked Dec 19 '18 at 0:33
Tim
26k74246455
edited Dec 19 '18 at 0:40
asked Dec 19 '18 at 0:33
Tim
26k74246455
asked Dec 19 '18 at 0:33
Tim
26k74246455
asked Dec 19 '18 at 0:33
Tim
26k74246455
26k74246455
add a comment |
add a comment |
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On Debian Jessie (for example), reboot may come from sysvinit-core ( https://packages.debian.org/jessie/sysvinit-core )
Downloading the file ( https://packages.debian.org/jessie/amd64/sysvinit-core/download )
$ mkdir X
$ cd X
$ ar x ../sysvinit-core_2.88dsf-59_amd64.deb
$ xz -dc < data.tar.xz | tar tvf - | egrep 'reboot|halt'
-rwxr-xr-x root/root 18776 2015-04-06 14:44 ./sbin/halt
-rw-r--r-- root/root 1753 2015-04-06 14:44 ./usr/share/man/man8/halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/poweroff -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/reboot -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/reboot.8.gz -> halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/poweroff.8.gz -> halt.8.gz
So we can see that halt is a separate program, and poweroff and reboot are symlinks to that.
answered Dec 19 '18 at 0:51
Stephen Harris
25k24477
There's more at unix.stackexchange.com/a/196471/5132 .
– JdeBP
Dec 19 '18 at 7:53
add a comment |
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1 Answer
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1 Answer
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On Debian Jessie (for example), reboot may come from sysvinit-core ( https://packages.debian.org/jessie/sysvinit-core )
Downloading the file ( https://packages.debian.org/jessie/amd64/sysvinit-core/download )
$ mkdir X
$ cd X
$ ar x ../sysvinit-core_2.88dsf-59_amd64.deb
$ xz -dc < data.tar.xz | tar tvf - | egrep 'reboot|halt'
-rwxr-xr-x root/root 18776 2015-04-06 14:44 ./sbin/halt
-rw-r--r-- root/root 1753 2015-04-06 14:44 ./usr/share/man/man8/halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/poweroff -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/reboot -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/reboot.8.gz -> halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/poweroff.8.gz -> halt.8.gz
So we can see that halt is a separate program, and poweroff and reboot are symlinks to that.
answered Dec 19 '18 at 0:51
Stephen Harris
25k24477
There's more at unix.stackexchange.com/a/196471/5132 .
– JdeBP
Dec 19 '18 at 7:53
add a comment |
On Debian Jessie (for example), reboot may come from sysvinit-core ( https://packages.debian.org/jessie/sysvinit-core )
Downloading the file ( https://packages.debian.org/jessie/amd64/sysvinit-core/download )
$ mkdir X
$ cd X
$ ar x ../sysvinit-core_2.88dsf-59_amd64.deb
$ xz -dc < data.tar.xz | tar tvf - | egrep 'reboot|halt'
-rwxr-xr-x root/root 18776 2015-04-06 14:44 ./sbin/halt
-rw-r--r-- root/root 1753 2015-04-06 14:44 ./usr/share/man/man8/halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/poweroff -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/reboot -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/reboot.8.gz -> halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/poweroff.8.gz -> halt.8.gz
So we can see that halt is a separate program, and poweroff and reboot are symlinks to that.
answered Dec 19 '18 at 0:51
Stephen Harris
25k24477
There's more at unix.stackexchange.com/a/196471/5132 .
– JdeBP
Dec 19 '18 at 7:53
add a comment |
On Debian Jessie (for example), reboot may come from sysvinit-core ( https://packages.debian.org/jessie/sysvinit-core )
Downloading the file ( https://packages.debian.org/jessie/amd64/sysvinit-core/download )
$ mkdir X
$ cd X
$ ar x ../sysvinit-core_2.88dsf-59_amd64.deb
$ xz -dc < data.tar.xz | tar tvf - | egrep 'reboot|halt'
-rwxr-xr-x root/root 18776 2015-04-06 14:44 ./sbin/halt
-rw-r--r-- root/root 1753 2015-04-06 14:44 ./usr/share/man/man8/halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/poweroff -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/reboot -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/reboot.8.gz -> halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/poweroff.8.gz -> halt.8.gz
So we can see that halt is a separate program, and poweroff and reboot are symlinks to that.
answered Dec 19 '18 at 0:51
Stephen Harris
25k24477
On Debian Jessie (for example), reboot may come from sysvinit-core ( https://packages.debian.org/jessie/sysvinit-core )
Downloading the file ( https://packages.debian.org/jessie/amd64/sysvinit-core/download )
$ mkdir X
$ cd X
$ ar x ../sysvinit-core_2.88dsf-59_amd64.deb
$ xz -dc < data.tar.xz | tar tvf - | egrep 'reboot|halt'
-rwxr-xr-x root/root 18776 2015-04-06 14:44 ./sbin/halt
-rw-r--r-- root/root 1753 2015-04-06 14:44 ./usr/share/man/man8/halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/poweroff -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./sbin/reboot -> halt
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/reboot.8.gz -> halt.8.gz
lrwxrwxrwx root/root 0 2015-04-06 14:44 ./usr/share/man/man8/poweroff.8.gz -> halt.8.gz
So we can see that halt is a separate program, and poweroff and reboot are symlinks to that.
answered Dec 19 '18 at 0:51
Stephen Harris
25k24477
answered Dec 19 '18 at 0:51
Stephen Harris
25k24477
answered Dec 19 '18 at 0:51
Stephen Harris
25k24477
answered Dec 19 '18 at 0:51
Stephen Harris
25k24477
25k24477
There's more at unix.stackexchange.com/a/196471/5132 .
– JdeBP
Dec 19 '18 at 7:53
add a comment |
There's more at unix.stackexchange.com/a/196471/5132 .
– JdeBP
Dec 19 '18 at 7:53
There's more at unix.stackexchange.com/a/196471/5132 .
– JdeBP
Dec 19 '18 at 7:53
There's more at unix.stackexchange.com/a/196471/5132 .
– JdeBP
Dec 19 '18 at 7:53
add a comment |
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