NAME

       sb2-show - sb2 diagnostics tool

SYNOPSIS

       sb2-show [-b binary_name ] [-m mode ] [-f function ] [-D ] [-v ] command [parameters]

DESCRIPTION

       sb2-show is a tool for querying and testing what scratchbox2 does "behind the scenes".

       The two most common uses are testing path mapping (commands path and which ) and finding out how programs
       are  executed  (the  exec  command).  Additionally,  there are some commands that are intended to be used
       internally by scratchbox2 itself, and not so useful for a normal user.

       sb2-show must be executed inside a scratchbox2 session (see sb2(1) for details about creating sessions)

COMMANDS

       Common commands:

       path [path1] [path2] [pathN]
              Show mapping results for listed pathnames

       which [path1] [path2]..
              Show mappings of pathnames, a less verbose variant of the path command (useful when using sb2-show
              from scripts)

       exec program_path [arg1] [arg2]..
              Show how a program would be executed, together with environment modifications.

       realcwd
              Show real current working directory (Inside a session /bin/pwd will usually report virtual  paths,
              and this is the only way to determine the real wroking directory).

       Commands for non-interactive use and debugging of scratchbox2:

       exec-cmdline file [argv1] [argv2]..
              show  execve()  modifications  on  a  single  line  (does not show full details, useful when using
              sb2-show from scripts)

       log-error 'message'
              Add an error message to the logfile

       log-warning 'message'
              Add a warning message to the logfile

       verify-pathlist-mappings required-fix [ignorelist]
              Reads list of paths from stdin and checks that all paths will be  mapped  to  a  required  prefix.
              This is used by sb2-check-pkg-mappings, (an internal utility).

       execluafile filename
              Load and execute Lua code from file.

       binarytype realpath
              detect & show type of program at realpath (which is an already mapped path)

       var variablename
              show value of an internal string variable

       libraryinterface
              show preload library interface version (the Lua <-> C code interface)

       qemu-debug-exec file argv0 [argv1] [argv2]..
              show command line that can be used to start target binary under qemu gdbserver

OPTIONS

       -v     verbose.

       -b binary_name
              show using binary_name as name of the calling program

       -f function
              show using function as callers name (full name of library or system call)

       -D     Ignore  directories  while  verifying  path lists (effective only for the verify-pathlist-mappings
              command)

       -t     report elapsed time (real time elapsed while executing the command)

       -x file
              Load and execute Lua code from file before executing the command.  Useful for debugging and tuning
              lua scripts of sb2.

       -X file
              Load and execute Lua code from file after executing the command.  Useful for debugging and  tuning
              lua scripts of sb2.

       -g port
              use port as qemu gdbserver listening port (default port is 1234).  See command qemu-debug-exec

EXAMPLES

       Show where the /etc directory gets mapped:

       $ sb2 sb2-show path /etc
       /etc => /opt/maemo/tools/etc (readonly)

       (exact results depend on how sb2-init was executed; what mapping mode is the default, etc.)

       Typically, home directories are not mapped:

       $ sb2 sb2-show path /home/yourname
       /home/yourname => /home/yourname

       In development modes, host-compatible versions of tools are executed:

       $ sb2 sb2-show exec /bin/ls
       File    /bin/ls
       Mapped  /opt/maemo/tools/bin/ls (readonly)
       argv[0] /bin/ls
        ...

       But in the emulation mode, only target's executables are used.  Try also:

       $ sb2 -e sb2-show exec /bin/ls

SEE ALSO

       sb2(1), sb2-config(1), sb2-logz(1), sb2-init(1)

AUTHOR

       Lauri Aarnio

2.2                                             17 December 2010                                     sb2-show(1)