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| author | Mattias Andrée <maandree@member.fsf.org> | 2015-12-19 01:50:38 +0100 |
|---|---|---|
| committer | Mattias Andrée <maandree@member.fsf.org> | 2015-12-19 01:50:38 +0100 |
| commit | dff1ffd8cca0cf454a084336ef51cbd80139f65e (patch) | |
| tree | 8b1aa49eb2306914ccb843cf449ee9a8e1ed298a /doc/info/chap | |
| parent | empty texinfo manual (diff) | |
| download | sleeping-getty-dff1ffd8cca0cf454a084336ef51cbd80139f65e.tar.gz sleeping-getty-dff1ffd8cca0cf454a084336ef51cbd80139f65e.tar.bz2 sleeping-getty-dff1ffd8cca0cf454a084336ef51cbd80139f65e.tar.xz | |
info: overview and invoking
Signed-off-by: Mattias Andrée <maandree@member.fsf.org>
Diffstat (limited to 'doc/info/chap')
| -rw-r--r-- | doc/info/chap/invoking.texinfo | 40 | ||||
| -rw-r--r-- | doc/info/chap/overview.texinfo | 12 |
2 files changed, 50 insertions, 2 deletions
diff --git a/doc/info/chap/invoking.texinfo b/doc/info/chap/invoking.texinfo index ebd7910..f0a51ec 100644 --- a/doc/info/chap/invoking.texinfo +++ b/doc/info/chap/invoking.texinfo @@ -1,5 +1,43 @@ @node Invoking @chapter Invoking -@command{sleeping-getty} +Example usages: +@example +/sbin/sleeping-getty 15 /sbin/got tty15 TERM=linux + +/sbin/sleeping-getty 16 /sbin/got tty16 TERM=linux + +/sbin/sleeping-getty 20 /sbin/agetty -8 -s 38400 tty20 linux +@end example + +The first argument shall be the number of the +virtual terminal the process waits for to be +be brought to the foreground. + +The second argument shall be pathname of the +getty program that shall be started once the +virtual terminal is in the foreground. Note +that @env{PATH} is probably not set up, and +a full pathname is required. + +The rest of the arguments shall be those that +are passed to the getty program. + +For example, +@example +/sbin/sleeping-getty 15 /sbin/got tty15 TERM=linux +@end example +@noindent +shall wait for virtual terminal number 15 +(on which you will find @file{/dev/tty15}) +to become active. Then the processes is +switch to, without forking, +@command{/sbin/got tty15 TERM=linux}, +which is Gates of Tartaros on @file{/dev/tty15} +with the environment variable @env{TERM} set +to @command{linux}. + +Note that sleeping-getty works on VT:s, not TTY:s. +It cannot wait for a serial console to become, +active, only virtual terminals. diff --git a/doc/info/chap/overview.texinfo b/doc/info/chap/overview.texinfo index 85d90c9..17a8f86 100644 --- a/doc/info/chap/overview.texinfo +++ b/doc/info/chap/overview.texinfo @@ -1,5 +1,15 @@ @node Overview @chapter Overview -@command{sleeping-getty} +@command{sleeping-getty} waits until a selected +virtual terminal is brought to the foreground. +Then, or if the process started with this +virtual terminal in the foreground, the process +changes image to a getty program. + +This is used to save CPU cycles during boot +to get a smoother boot, which is important if +your getty program does a lot of things, or if +your computer is not too powerful. It also +reduces the memory footprint. |