261 lines
6.6 KiB
Groff
261 lines
6.6 KiB
Groff
.\"-
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.\" Copyright (c) 1989, 1990, 1993, 1994
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Institute of Electrical and Electronics Engineers, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)chflags.1 8.4 (Berkeley) 5/2/95
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.\" $FreeBSD$
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.\"
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.Dd March 6, 2018
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.Dt CHFLAGS 1
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.Os
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.Sh NAME
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.Nm chflags
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.Nd change file flags
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.Sh SYNOPSIS
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.Nm
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.Op Fl fhvx
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.Oo
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.Fl R
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.Op Fl H | Fl L | Fl P
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.Oc
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.Ar flags
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.Ar
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.Sh DESCRIPTION
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The
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.Nm
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utility modifies the file flags of the listed files
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as specified by the
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.Ar flags
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operand.
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl f
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Do not display a diagnostic message if
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.Nm
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could not modify the flags for
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.Va file ,
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nor modify the exit status to reflect such failures.
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.It Fl H
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If the
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.Fl R
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option is specified, symbolic links on the command line are followed
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and hence unaffected by the command.
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(Symbolic links encountered during traversal are not followed.)
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.It Fl h
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If the
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.Ar file
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is a symbolic link,
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change the file flags of the link itself rather than the file to which it points.
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.It Fl L
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If the
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.Fl R
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option is specified, all symbolic links are followed.
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.It Fl P
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If the
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.Fl R
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option is specified, no symbolic links are followed.
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This is the default.
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.It Fl R
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Change the file flags of the file hierarchies rooted in the files,
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instead of just the files themselves.
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Beware of unintentionally matching the
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.Dq Pa ".."
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hard link to the parent directory when using wildcards like
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.Dq Li ".*" .
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.It Fl v
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Cause
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.Nm
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to be verbose, showing filenames as the flags are modified.
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If the
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.Fl v
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option is specified more than once, the old and new flags of the file
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will also be printed, in octal notation.
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.It Fl x
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Do not cross mount points.
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.El
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.Pp
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The flags are specified as an octal number or a comma separated list
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of keywords.
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The following keywords are currently defined:
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.Bl -tag -offset indent -width ".Cm opaque"
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.It Cm arch , archived
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set the archived flag (super-user only)
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.It Cm nodump
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set the nodump flag (owner or super-user only)
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.It Cm opaque
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set the opaque flag (owner or super-user only)
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.It Cm sappnd , sappend
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set the system append-only flag (super-user only)
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.It Cm schg , schange , simmutable
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set the system immutable flag (super-user only)
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.It Cm snapshot
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set the snapshot flag (filesystems do not allow changing this flag)
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.It Cm sunlnk , sunlink
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set the system undeletable flag (super-user only)
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.It Cm uappnd , uappend
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set the user append-only flag (owner or super-user only)
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.It Cm uarch , uarchive
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set the archive flag (owner or super-user only)
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.It Cm uchg , uchange , uimmutable
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set the user immutable flag (owner or super-user only)
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.It Cm uhidden , hidden
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set the hidden file attribute (owner or super-user only)
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.It Cm uoffline , offline
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set the offline file attribute (owner or super-user only)
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.It Cm urdonly , rdonly , readonly
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set the DOS, Windows and CIFS readonly flag (owner or super-user only)
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.It Cm usparse , sparse
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set the sparse file attribute (owner or super-user only)
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.It Cm usystem , system
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set the DOS, Windows and CIFS system flag (owner or super-user only)
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.It Cm ureparse , reparse
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set the Windows reparse point file attribute (owner or super-user only)
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.It Cm uunlnk , uunlink
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set the user undeletable flag (owner or super-user only)
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.El
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.Pp
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Putting the letters
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.Dq Ar no
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before or removing the letters
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.Dq Ar no
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from a keyword causes the flag to be cleared.
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For example:
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.Pp
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.Bl -tag -offset indent -width "nouchg" -compact
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.It Cm nouchg
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clear the user immutable flag (owner or super-user only)
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.It Cm dump
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clear the nodump flag (owner or super-user only)
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.El
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.Pp
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A few of the octal values include:
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.Bl -tag -offset indent -width ".Li 10"
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.It Li 0
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Clear all file flags.
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.It Li 1
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Translates to the
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.Cm nodump
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keyword.
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.It Li 2
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Translates to the
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.Cm uchg
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keyword.
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.It Li 3
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Translates to the
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.Cm uchg , nodump
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keywords.
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.It Li 4
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Translates to the
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.Cm uappnd
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keyword.
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.It Li 10
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Translates to the
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.Cm opaque
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keyword.
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.It Li 20
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translates to the
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.Cm uunlnk
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keyword.
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.El
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.Pp
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Other combinations of keywords may be placed by using
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the octets assigned; however, these are the most notable.
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.Pp
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Unless the
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.Fl H ,
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.Fl L ,
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or
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.Fl h
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options are given,
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.Nm
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on a symbolic link always succeeds and has no effect.
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The
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.Fl H ,
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.Fl L
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and
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.Fl P
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options are ignored unless the
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.Fl R
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option is specified.
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In addition, these options override each other and the
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command's actions are determined by the last one specified.
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.Pp
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You can use "ls -lo" to see the flags of existing files.
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.Pp
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Note that the ability to change certain flags is dependent
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on the current kernel
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.Va securelevel
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setting.
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See
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.Xr security 7
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for more information on this setting.
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.Pp
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If
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.Nm
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receives a
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.Dv SIGINFO
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signal (see the
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.Cm status
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argument for
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.Xr stty 1 ) ,
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then the current filename as well as the old and new flags are displayed.
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.Sh EXIT STATUS
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.Ex -std
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.Sh SEE ALSO
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.Xr ls 1 ,
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.Xr chflags 2 ,
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.Xr stat 2 ,
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.Xr fts 3 ,
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.Xr security 7 ,
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.Xr symlink 7
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Bx 4.4 .
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.Sh BUGS
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Only a limited number of utilities are
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.Nm
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aware.
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Some of these tools include
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.Xr ls 1 ,
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.Xr cp 1 ,
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.Xr find 1 ,
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.Xr install 1 ,
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.Xr dump 8 ,
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and
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.Xr restore 8 .
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In particular a tool which is not currently
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.Nm
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aware is the
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.Xr pax 1
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utility.
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