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Index for Section 1 |
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Alphabetical listing for G |
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getacl(1)
NAME
getacl - Displays the discretionary access control information (ACL)
SYNOPSIS
getacl [-d|-D] [-g group[,group...]] [-n]
[-m] [-u user[,user...]] file...
FLAGS
-d Displays the default access ACL. The -d and -D options are
mutually exclusive.
-D Displays the default directory ACL. The -D flag is not defined
by POSIX. The -d and -D options are mutually exclusive.
-g group Display the designated group entries only. The -g flag is not
defined by POSIX.
-m Display the output in multicolumns. The -m flag is not defined
by POSIX.
-n Use numeric IDs. The -n flag is not defined by POSIX.
-u user Display the designated user entries. The -u flag may be used
multiple times on the command line. The -u flag is not defined
by POSIX.
DESCRIPTION
Note
This command is based on Draft 13 of the POSIX P1003.6 standard.
The arguments may change as the P1003.6 standard is finalized.
The getacl command displays the selected type of ACL for each file or
directory named on the command line.
The following three types of ACLs may be retrieved:
Access ACL Designates the access to be granted to a given
object.
Default directory ACL The default directory ACL allows the owner or a
privileged user to associate an ACL with a directory
that is to be inherited as an access ACL when a
subdirectory is created. The default directory ACL
will also be inherited as the default directory ACL
by the new directory.
Default access ACL The default access ACL allows the owner or a
privileged user to associate an ACL with a directory
that is to be inherited as an access ACL when an
object is created within the directory. If the
object being created is a directory and a default
directory ACL exists on the parent directory, it is
inherited as the access ACL and not the default
access ACL. The default access ACL is inherited as
the default access ACL for any subdirectory created
Both the default directory ACL and default access ACL are propagated down
through the directory tree as each directory is created.
The user readable format of the ACL consists of the comments section and
the entries section. The comments section contains the following three
lines:
name of the object
object owner
group owner
Each line of the comments section begins with a # character.
The ACL entries section by default consists of one line per entry. Each
line contains three colon-separated fields defined as:
Field 1 The ACL entry type (user/group/other).
Field 2 The name or id that this entry pertains to. If nothing is
present, it refers to the owning user, owning group or other.
Field 3 The access being granted by the entry.
The output display format and relative ordering of ACL entries is as
follows:
user::perm
user:uid1:perm
user:uid2:perm
group::perm
group:gid1:perm
group:gid2:perm
other::perm
The following are some typical getacl outputs:
% getacl /ufs/test
#
# file: /ufs/test
# owner: root
# group: system
#
user::rwx
user:fran:-wx
user:adm:r--
group::r-x
other::r-x
% getacl -g adm /ufs/test
#
# file: /ufs/test
# owner: root
# group: system
#
% getacl -u adm /ufs/test
#
# file: /ufs/test
# owner: root
# group: system
#
user:adm:r--
If any ACL entry is wider than the screen, the access control list is
continued on the next line, indented to the previous line. The width of
the screen is taken from the COLUMNS environment variable, if the variable
is not set, the default width is 80 columns.
The -m option may be used to cause the ACL to be displayed in a multicolumn
format. The user entries defined in the ACL are placed on the screen in
the maximum number of columns allowed by the current size of the screen,
followed by the group entries.
The output from the getacl command is in the correct format for input to
the setacl command. The output may be redirected into a file, then the
output file can be used as input to the setacl command. This technique is
useful for assigning the ACL on an existing file to one or more new files.
For example:
$ getacl file1 > entries_file
$ setacl -U entries_file file2 file3 file4
The getacl command displays the access control lists of those files that
resides in directories that the user has search permissions to.
EXIT VALUES
If successful, the getacl command exits with a status of zero. Otherwise,
this command exits with a status of 1 if it aborted because of syntax
errors, or if the ACL of one or more files could not be accessed.
RELATED INFORMATION
Commands: setacl(1)
Files: acl(4).
Security