What is the use of command set -- and set - variable? Post: 302480206

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fiu-ctrl

fiu-ctrl(1)						      General Commands Manual						       fiu-ctrl(1)

NAME

       fiu-ctrl - a script to remote control programs using libfiu

SYNOPSIS

       fiu-ctrl [options] PID [PID ...]

DESCRIPTION

       fiu-ctrl is a script to enable/disable failure points in running programs that are using libfiu(3).

       Programs are usually launched using fiu-run(1), which enables libfiu's remote control capabilities without the need to modify the program's
       code.

       For additional documentation, go to the project's website at http://blitiri.com.ar/p/libfiu.

OPTIONS

       -c command
	      Run the given libfiu remote control command before executing the program (see below for reference).

       -f ctrlpath
	      Set the default prefix for remote control over named pipes. Defaults to "$TMPDIR/fiu-ctrl", or "/tmp/fiu-ctrl" if "$TMPDIR"  is  not
	      set, which is the usually correct for programs launched using fiu-run(1).

       Remote control commands are of the form "command param1=value1,param2=value2".  Valid commands are:

       'enable name=NAME'
	      Enables the NAME failure point unconditionally.

       'enable_random name=NAME,probability=P'
	      Enables the NAME failure point with a probability of P.

       'disable name=NAME'
	      Disables the NAME failure point.

       All of the enable* commands can also optionally take failnum and failinfo parameters, analogous to the ones taken by the C functions.

EXAMPLES

       The  following  command will tell the process running with PID 12345 to enable the failure point posix/io/read with a 25% of probability to
       fail, and the failure point libc/mm/malloc with a 5% of probability to fail:

	      fiu-ctrl -c 'enable_random name=posix/io/*,probability=0.25' 
		       -c 'enable_random name=libc/mm/*,probability=0.05' 12345

       And the following will tell the same process to disable the previously enabled failure point posix/io/read:

	      fiu-ctrl -c 'disable name=posix/io/read' 12345

SEE ALSO

       libfiu(3), fiu-run(1).

BUGS

       If you want to report bugs, or have any questions or comments, just let me know at albertito@blitiri.com.ar.  For  more	information  about
       libfiu, you can go to http://blitiri.com.ar/p/libfiu.

								    16/Jun/2009 						       fiu-ctrl(1)