Shows or changes discretionary access control lists (DACLs) of files or folders.
List DACL of the current directory:
$ icacls . . NT AUTHORITY\SYSTEM:(OI)(CI)(F) BUILTIN\Administrators:(OI)(CI)(F) LAPTOP-HVPJGI3T\kjk:(OI)(CI)(F) Successfully processed 1 files; Failed processing 0 files
$ icacls /? ICACLS name /save aclfile [/T] [/C] [/L] [/Q] stores the DACLs for the files and folders that match the name into aclfile for later use with /restore. Note that SACLs, owner, or integrity labels are not saved. ICACLS directory [/substitute SidOld SidNew [...]] /restore aclfile [/C] [/L] [/Q] applies the stored DACLs to files in directory. ICACLS name /setowner user [/T] [/C] [/L] [/Q] changes the owner of all matching names. This option does not force a change of ownership; use the takeown.exe utility for that purpose. ICACLS name /findsid Sid [/T] [/C] [/L] [/Q] finds all matching names that contain an ACL explicitly mentioning Sid. ICACLS name /verify [/T] [/C] [/L] [/Q] finds all files whose ACL is not in canonical form or whose lengths are inconsistent with ACE counts. ICACLS name /reset [/T] [/C] [/L] [/Q] replaces ACLs with default inherited ACLs for all matching files. ICACLS name [/grant[:r] Sid:perm[...]] [/deny Sid:perm [...]] [/remove[:g|:d]] Sid[...]] [/T] [/C] [/L] [/Q] [/setintegritylevel Level:policy[...]] /grant[:r] Sid:perm grants the specified user access rights. With :r, the permissions replace any previously granted explicit permissions. Without :r, the permissions are added to any previously granted explicit permissions. /deny Sid:perm explicitly denies the specified user access rights. An explicit deny ACE is added for the stated permissions and the same permissions in any explicit grant are removed. /remove[:[g|d]] Sid removes all occurrences of Sid in the ACL. With :g, it removes all occurrences of granted rights to that Sid. With :d, it removes all occurrences of denied rights to that Sid. /setintegritylevel [(CI)(OI)]Level explicitly adds an integrity ACE to all matching files. The level is to be specified as one of: L[ow] M[edium] H[igh] Inheritance options for the integrity ACE may precede the level and are applied only to directories. /inheritance:e|d|r e - enables inheritance d - disables inheritance and copy the ACEs r - remove all inherited ACEs Note: Sids may be in either numerical or friendly name form. If a numerical form is given, affix a * to the start of the SID. /T indicates that this operation is performed on all matching files/directories below the directories specified in the name. /C indicates that this operation will continue on all file errors. Error messages will still be displayed. /L indicates that this operation is performed on a symbolic link itself versus its target. /Q indicates that icacls should suppress success messages. ICACLS preserves the canonical ordering of ACE entries: Explicit denials Explicit grants Inherited denials Inherited grants perm is a permission mask and can be specified in one of two forms: a sequence of simple rights: N - no access F - full access M - modify access RX - read and execute access R - read-only access W - write-only access D - delete access a comma-separated list in parentheses of specific rights: DE - delete RC - read control WDAC - write DAC WO - write owner S - synchronize AS - access system security MA - maximum allowed GR - generic read GW - generic write GE - generic execute GA - generic all RD - read data/list directory WD - write data/add file AD - append data/add subdirectory REA - read extended attributes WEA - write extended attributes X - execute/traverse DC - delete child RA - read attributes WA - write attributes inheritance rights may precede either form and are applied only to directories: (OI) - object inherit (CI) - container inherit (IO) - inherit only (NP) - don't propagate inherit (I) - permission inherited from parent container Examples: icacls c:\windows\* /save AclFile /T - Will save the ACLs for all files under c:\windows and its subdirectories to AclFile. icacls c:\windows\ /restore AclFile - Will restore the Acls for every file within AclFile that exists in c:\windows and its subdirectories. icacls file /grant Administrator:(D,WDAC) - Will grant the user Administrator Delete and Write DAC permissions to file. icacls file /grant *S-1-1-0:(D,WDAC) - Will grant the user defined by sid S-1-1-0 Delete and Write DAC permissions to file.
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