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