.TH RECOVER 6 "9 January 1993"

.TH RECOVER 6 "9 January 1993"

.UC 4

.UC 4

.SH NAME

.SH NAME

.SH SYNOPSIS

.SH SYNOPSIS

[

[

.B \-d

.B \-d

.I directory

.I directory

The

The

.I base

.I base

options tell

options tell

which files to process.

which files to process.

Each base option specifies recovery of a separate game.

Each base option specifies recovery of a separate game.

.PP

.PP

or "xlock" if the number of concurrent players is being limited.

or "xlock" if the number of concurrent players is being limited.

It may be necessary to look in the playground to find the correct

It may be necessary to look in the playground to find the correct

base name of the interrupted game.

base name of the interrupted game.

will transform these level files into a save file of the same name as

will transform these level files into a save file of the same name as

.I nethack

.I nethack

would have used.

would have used.

.PP

.PP

Since

Since

must be able to read and delete files from the playground

must be able to read and delete files from the playground

and create files in the save directory,

and create files in the save directory,

it has interesting interactions with game security.

it has interesting interactions with game security.

Giving ordinary players access to

Giving ordinary players access to

through setuid or setgid is tantamount to leaving the playground

through setuid or setgid is tantamount to leaving the playground

world-writable,

world-writable,

with respect to both cheating and messing up other players.

with respect to both cheating and messing up other players.

For a single-user system, this of course does not change anything,

For a single-user system, this of course does not change anything,

so some of the microcomputer ports install

so some of the microcomputer ports install

by default.

by default.

.PP

.PP

For a multi-user system,

For a multi-user system,

playground to be fed to recover when the host machine boots,

playground to be fed to recover when the host machine boots,

and handle game crashes individually.

and handle game crashes individually.

If the user population is sufficiently trustworthy,

If the user population is sufficiently trustworthy,

can be installed with the same permissions the

can be installed with the same permissions the

.I nethack

.I nethack

executable has.

executable has.

In either case,

In either case,

is easily compiled from the distribution utility directory.

is easily compiled from the distribution utility directory.

.SH NOTES

.SH NOTES

.PP

.PP

Like

Like

.I nethack

.I nethack

itself,

itself,

will overwrite existing savefiles of the same name.

will overwrite existing savefiles of the same name.

Savefiles created by

Savefiles created by

are uncompressed;

are uncompressed;

they may be compressed afterwards if desired,

they may be compressed afterwards if desired,

but even a compression-using

but even a compression-using

nethack(6)

nethack(6)

.SH BUGS

.SH BUGS

.PP

.PP

makes no attempt to find out if a base name specifies a game in progress.

makes no attempt to find out if a base name specifies a game in progress.

If multiple machines share a playground, this would be impossible to

If multiple machines share a playground, this would be impossible to

determine.

determine.

.PP

.PP

should be taught to use the nethack playground locking mechanism to

should be taught to use the nethack playground locking mechanism to

avoid conflicts.

avoid conflicts.