SETCAP(8) System Manager's Manual SETCAP(8)
NAME
setcap - set file capabilities
SYNOPSIS
setcap [-q] [-n <rootuid>] [-v] {capabilities|-|-r} filename [ ... ca-
pabilitiesN fileN ]
DESCRIPTION
In the absence of the -v (verify) option setcap sets the capabilities
of each specified filename to the capabilities specified. The optional
-n <rootuid> argument can be used to set the file capability for use
only in a user namespace with this root user ID owner. The -v option is
used to verify that the specified capabilities are currently associated
with the file. If -v and -n are supplied, the -n <rootuid> argument is
also verified.
The capabilities are specified in the form described in
cap_from_text(3).
The special capability string, '-', can be used to indicate that capa-
bilities are read from the standard input. In such cases, the capabil-
ity set is terminated with a blank line.
The special capability string, '-r', is used to remove a capability set
from a file. Note, setting an empty capability set is not the same as
removing it. An empty set can be used to guarantee a file is not exe-
cuted with privilege in spite of the fact that the prevailing ambi-
ent+inheritable sets would otherwise bestow capabilities on executed
binaries.
The -q flag is used to make the program less verbose in its output.
EXIT CODE
The setcap program will exit with a 0 exit code if successful. On fail-
ure, the exit code is 1.
REPORTING BUGS
Please report bugs via:
https://bugzilla.kernel.org/buglist.cgi?component=lib-
cap&list_id=1090757
SEE ALSO
capsh(1), cap_from_text(3), cap_get_file(3), capabilities(7),
user_namespaces(7), captree(8), getcap(8) and getpcaps(8).
2020-08-29 SETCAP(8)
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