Jeremy Baxter
03d321f4f1
See the "Use semantic newlines" section of man-pages(7) on a Linux system for reasoning behind this.
140 lines
3 KiB
Groff
140 lines
3 KiB
Groff
.Dd $Mdocdate: April 1 2024 $
|
|
.Dt CSTO 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm csto
|
|
.Nd Lua interpreter with operating system interfaces
|
|
.Sh SYNOPSIS
|
|
.Nm csto
|
|
.Bk -words
|
|
.Op Fl EivW
|
|
.Op Fl e Ar stat
|
|
.Op Fl l Ar mod
|
|
.Op Fl l Ar g=mod
|
|
.Op Ar script Op Ar args
|
|
.Ek
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
is an interpreter for the Lua programming language,
|
|
using the Callisto libraries.
|
|
Callisto provides Lua libraries for operating systems
|
|
following the POSIX standard.
|
|
These allow Lua programs to
|
|
manipulate the file system,
|
|
send signals to processes,
|
|
parse command line arguments,
|
|
and use other OS functionality not available to a regular Lua interpreter.
|
|
.Pp
|
|
All of these libraries are conveniently bundled directly into
|
|
.Nm
|
|
and do not depend on any external libraries or files,
|
|
unless your copy of
|
|
.Nm
|
|
was built with support for
|
|
.Lb libreadline .
|
|
.Pp
|
|
For up-to-date information concerning Callisto, visit
|
|
.Lk https://sr.ht/\[ti]jeremy/callisto/
|
|
in a web browser.
|
|
.Pp
|
|
.Nm
|
|
executes Lua programs in source form or in bytecode form.
|
|
Lua programs in source form can be compiled to bytecode form
|
|
through the program
|
|
.Xr luac 1 ,
|
|
included with the standard Lua distribution.
|
|
.Pp
|
|
After handling command line options, the Lua program in file
|
|
.Ar script
|
|
is executed with arguments
|
|
.Ar args .
|
|
These arguments are available to
|
|
.Ar script
|
|
as strings in a global table named
|
|
.Sy arg .
|
|
When called without arguments,
|
|
.Nm
|
|
behaves as if
|
|
.Fl v
|
|
and
|
|
.Fl i
|
|
were given if standard input is a terminal, and as if
|
|
.Fl
|
|
was given otherwise.
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width -l_g=mod
|
|
.It Fl E
|
|
Ignore environment variables (see section
|
|
.Sx ENVIRONMENT
|
|
below).
|
|
.It Fl e Ar stat
|
|
Execute the Lua statement
|
|
.Ar stat .
|
|
.It Fl i
|
|
Enter interactive mode after executing
|
|
.Ar script .
|
|
.It Fl l Ar mod
|
|
Load library
|
|
.Ar mod
|
|
into global
|
|
.Ar mod .
|
|
.It Fl l Ar g=mod
|
|
Load library
|
|
.Ar mod
|
|
into global
|
|
.Ar g .
|
|
.It Fl v
|
|
Print version information.
|
|
.It Fl W
|
|
Enable warnings (see
|
|
.Sy warn()
|
|
in the Lua manual).
|
|
.El
|
|
.Sh ENVIRONMENT
|
|
.Bl -tag -width four
|
|
.It Ev LUA_INIT , Ev LUA_INIT_5_4
|
|
Before handling command line options and scripts,
|
|
.Nm
|
|
checks the values of
|
|
.Ev LUA_INIT_5_4
|
|
and
|
|
.Ev LUA_INIT
|
|
in that order. When
|
|
.Ev LUA_INIT_5_4
|
|
is set,
|
|
.Ev LUA_INIT
|
|
is ignored.
|
|
If the contents are of the form
|
|
.Dq @filename ,
|
|
then the contents of the file
|
|
.Em filename
|
|
is executed as Lua code.
|
|
Otherwise, the contents are assumed to be a Lua statement
|
|
and is executed as Lua code.
|
|
.It Ev LUA_PATH , Ev LUA_PATH_5_4
|
|
Initial value of
|
|
.Em package.path ,
|
|
the path used by
|
|
.Sy require()
|
|
to search for Lua modules.
|
|
.It Ev LUA_CPATH , Ev LUA_CPATH_5_4
|
|
Initial value of
|
|
.Em package.cpath ,
|
|
the path used by
|
|
.Sy require()
|
|
to search for C loaders.
|
|
.El
|
|
.Sh AUTHORS
|
|
.An Jeremy Baxter Aq Mt jtbx@disroot.org
|
|
authored and maintains the Callisto libraries.
|
|
.Pp
|
|
R. Ierusalimschy, L. H. de Figueiredo, and W. Celes
|
|
authored the Lua programming language and its standard libraries.
|
|
.Sh BUGS
|
|
Known bugs can be found at the bug tracker found at
|
|
.Lk https://todo.sr.ht/~jeremy/callisto .
|
|
.Pp
|
|
If you have discovered a bug in Callisto,
|
|
please report it to the bug tracker or send an email to
|
|
.Aq Mt ~jeremy/callisto@todo.sr.ht .
|