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ELFCTL(1)		FreeBSD	General	Commands Manual		     ELFCTL(1)

NAME
     elfctl -- change an ELF binary's feature control note

SYNOPSIS
     elfctl [-h	| --help] [-i] [-l] [-e	featurelist] file ...

DESCRIPTION
     The elfctl	utility	modifies feature flags in the feature control note in
     an	ELF binary.

     The options are as	follows:

     -h	| --help
	     Print a usage message and exit.

     -i	     Ignore unknown feature flags in featurelist.

     -l	     List known	ELF feature flags.

     -e	featurelist
	     Edit features from	the given comma	separated list featurelist.
	     featurelist starts	with one of the	three operations: "+" to turn
	     on	the features, "-" to turn off the features, "="	to only	turn
	     on	the given features.  A comma separated list of feature names
	     or	numeric	values follows the operation.

     If	-e is not specified elfctl displays the	status of each feature in the
     ELF note in each file ....

EXIT STATUS
     Exit status is 0 on success, and 1	if the command fails if	a file does
     not exist,	is too short, or fails to find or edit features	note.

EXAMPLES
     The following is an example of a typical usage of the elfctl command:

	   elfctl file
	   elfctl -e +aslr file

     Features may be specified as numerical values:

	    elfctl -e =0x0001,0x0004 file

     Features may also be specified as a single	combined value:

	    elfctl -e =0x5 file

HISTORY
     elfctl first appeared in FreeBSD 12.2.

AUTHORS
     elfctl was	written	by Bora	Ozarslan borako.ozarslan@gmail.com under spon-
     sorship from the FreeBSD Foundation.

FreeBSD	13.0		       January 22, 2021			  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | EXIT STATUS | EXAMPLES | HISTORY | AUTHORS

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