From 978d0bffc413b67ead9db2d2816b916cf3d502ca Mon Sep 17 00:00:00 2001 From: Alex Gronenwoud Date: Wed, 24 Sep 2003 22:29:16 +0000 Subject: Changing the style of the command descriptions in appendix A. git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2879 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689 --- appendixa/sysvinit-desc.xml | 118 ++++++++++++++++++-------------------------- 1 file changed, 47 insertions(+), 71 deletions(-) (limited to 'appendixa/sysvinit-desc.xml') diff --git a/appendixa/sysvinit-desc.xml b/appendixa/sysvinit-desc.xml index 51cfde350..ec9af5434 100644 --- a/appendixa/sysvinit-desc.xml +++ b/appendixa/sysvinit-desc.xml @@ -6,77 +6,53 @@ Program file descriptions -halt -halt notes, in the file /var/log/wtmp, that the system is being -brought down and then tells the kernel to either halt, reboot or -poweroff the system. If halt or reboot is called when the system is not -in runlevel 0 or 6, shutdown will be invoked instead (with -the flag -h or -r). - -init -init is the parent of all processes. Its primary role is to create -processes from a script stored in the file /etc/inittab. This -file usually has entries which cause init to spawn gettys on each line from -which users can log in. It also controls autonomous processes required by any -particular system. - -killall5 -killall5 is the SystemV killall command. It sends a signal to all -processes except the processes in its own session, so it won't kill the -shell that is running the script it was called from. - -last -last searches back through the file /var/log/wtmp (or the file designated -by the -f flag) and displays a list of all users logged in (and out) -since that file was created. - -lastb -lastb is the same as last, except that by default it shows a log of the -file /var/log/btmp, which contains all the bad login attempts. - -mesg -mesg controls the access to the user's terminal by others. It's typically -used to allow or disallow other users to write to his terminal. - -pidof -pidof displays the process identifiers (PIDs) of the named -programs. - -poweroff -poweroff is equivalent to shutdown -h -p now. It halts the computer and -switches off the computer (when using an APM compliant BIOS and APM is -enabled in the kernel). - -reboot -reboot is equivalent to shutdown -r now. It reboots -the computer. - -runlevel -runlevel reads the system utmp file (usually /var/run/utmp), locates -the runlevel record and prints the previous and current system -runlevel on its standard output, separated by a single space. - -shutdown -shutdown brings the system down in a secure way. All logged-in users are -notified that the system is going down and login is blocked. - -sulogin -sulogin is invoked by init when the system goes into single user mode -(this is done through an entry in /etc/inittab). Init also tries to -execute sulogin when it is passed the -b flag from the boot loader -(LILO, for example). - -telinit -telinit sends appropriate signals to init, telling it which runlevel to -enter. - -utmpdump -utmpdumps prints the content of a file (usually /var/run/utmp) on -standard output in a user friendly format. - -wall -wall sends a message to logged in users that have their mesg permission -set to yes. +halt normally invokes shutdown with the -h flag, +except when already in runlevel 0, then it tells the kernel to halt the system. +But first it notes in the file /var/log/wtmp that the +system is being brought down. + +init is the mother of all processes. It reads its +commands from /etc/inittab, which normally tell it which +scripts to run for which runlevel, and how many gettys to spawn. + +killall5 sends a signal to all processes, except +the processes in its own session -- so it won't kill the shell running the +script that called it. + +last shows which users last logged in (and out), +searching back through the file /var/log/wtmp. It can +also show system boots and shutdowns, and runlevel changes. + +lastb shows the failed login attempts, as logged +in /var/log/btmp. + +mesg controls whether other users can send +messages to the current user's terminal. + +pidof reports the PIDs of the given programs. + +poweroff tells the kernel to halt the system and +switch off the computer. But see halt. + +reboot tells the kernel to reboot the system. +But see halt. + +runlevel reports the previous and the current +runlevel, as noted in the last runlevel record in +/var/run/utmp. + +shutdown brings the system down in a secure way, +signaling all processes and notifying all logged-in users. + +sulogin allows the superuser to log in. It is +normally invoked by init when the system goes into single user mode. + +telinit tells init which runlevel to enter. + +utmpdump displays the content of the given login +file in a friendlier format. + +wall writes a message to all logged-in users. -- cgit v1.2.3-54-g00ecf