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CHFLAGS(1)                  General Commands Manual                 CHFLAGS(1)
:
NAME
     chflags – change file flags

SYNOPSIS
     chflags [-fhvx] [-R [-H | -L | -P]] flags file …

DESCRIPTION
     The chflags utility modifies the file flags of the listed files as
     specified by the flags operand.

     The options are as follows:

     -f      Do not display a diagnostic message if chflags could not modify
             the flags for file, nor modify the exit status to reflect such
             failures.

     -H      If the -R option is specified, symbolic links on the command line
             are followed and hence unaffected by the command.  (Symbolic
             links encountered during traversal are not followed.)

     -h      If the file is a symbolic link, change the file flags of the link
             itself rather than the file to which it points.

     -L      If the -R option is specified, all symbolic links are followed.

     -P      If the -R option is specified, no symbolic links are followed.
             This is the default.

     -R      Change the file flags of the file hierarchies rooted in the
             files, instead of just the files themselves.  Beware of
             unintentionally matching the “..” hard link to the parent
             directory when using wildcards like “.*”.

     -v      Cause chflags to be verbose, showing filenames as the flags are
             modified.  If the -v option is specified more than once, the old
             and new flags of the file will also be printed, in octal
             notation.

     -x      Do not cross mount points.

     The flags are specified as an octal number or a comma separated list of
     keywords.  The following keywords are currently defined:

           arch, archived
                       set the archived flag (super-user only)

           nodump      set the nodump flag (owner or super-user only)

           opaque      set the opaque flag (owner or super-user only)
                       [Directory is opaque when viewed through a union mount]

           sappnd, sappend
                       set the system append-only flag (super-user only)

           schg, schange, simmutable
                       set the system immutable flag (super-user only)

           uappnd, uappend
                       set the user append-only flag (owner or super-user
                       only)

           uchg, uchange, uimmutable
                       set the user immutable flag (owner or super-user only)

           hidden      set the hidden flag [Hide item from GUI]

     Putting the letters “no” before or removing the letters “no” from a
     keyword causes the flag to be cleared.  For example:

           nouchg  clear the user immutable flag (owner or super-user only)
           dump    clear the nodump flag (owner or super-user only)

     Unless the -H or -L options are given, chflags on a symbolic link always
     succeeds and has no effect.  The -H, -L and -P options are ignored unless
     the -R option is specified.  In addition, these options override each
     other and the command's actions are determined by the last one specified.

     You can use "ls -lO" to see the flags of existing files.

     If chflags receives a SIGINFO signal (see the status argument for
     stty(1)), then the current filename as well as the old and new flags are
     displayed.

EXIT STATUS
     The chflags utility exits 0 on success, and >0 if an error occurs.

EXAMPLES
     Recursively clear all flags on files and directories contained within the
     foobar directory hierarchy:
           chflags -R 0 foobar

SEE ALSO
     ls(1), chflags(2), stat(2), fts(3), symlink(7)

HISTORY
     The chflags command first appeared in 4.4BSD.

BUGS
     Only a limited number of utilities are chflags aware.  Some of these
     tools include ls(1), cp(1), find(1), install(1), dump(8), and restore(8).
     In particular a tool which is not currently chflags aware is the pax(1)
     utility.

macOS 13.0                       June 12, 2018                      macOS 13.0

awk '{gsub(/\040/,"\\\040");gsub(/\047/,"\\\047");gsub(/\(/,"\\(");gsub(/\)/,"\\)");gsub(/\&/,"\\\\&");gsub(/\|/,"\\|");gsub(/\042/,"\\\042");system("md5 " $0)}'

gsub(r, s [, t])        For  each  substring  matching the regular expression r in the string t, substitute the string s,
                               and return the number of substitutions.  If t is not supplied, use $0.  An & in  the  replacement
                               text is replaced with the text that was actually matched.  Use \& to get a literal &.  (This must
                               be typed as "\\&"; see GAWK: Effective AWK Programming for a fuller discussion of the  rules  for
                               ampersands and backslashes in the replacement text of sub(), gsub(), and gensub().)

ip -br l | awk '/^e/ {print $2}'