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Given a file, say /var/some_dir_1/some_dir_2/some_dir_3/some_file, is there a single command that will list the permissions of some_file and all the directories in its path from root, i.e. the permissions for var, some_dir_1, some_dir_2, some_dir_3?

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1 Answer 1

The following bash script prints all permissions of the directory entry passed as argument and all its parents up to /:

#!/usr/bin/env bash

[[ $# -eq 1 ]] || exit 1


while true ; do
    ls -ld "$FILEPATH"
    [[ "$FILEPATH" != "/" ]] || exit
    FILEPATH="$( dirname "$FILEPATH" )"

Save as e.g. parent_permissions.sh and run using /path/to/parent_permissions.sh /path/to/file.

It only works with absolute paths unless combined with readlink -f or the abspath script from this answer, in which case you need to change the initial assignment of FILEPATH to:

FILEPATH="$( abspath "$1" )"

On Linux, this might work (untested):

FILEPATH="$( readlink -f "$1" )"

Example output:

drwxr-xr-x  66 danielbeck  staff  2244  2 Feb 12:38 /Users/danielbeck
drwxr-xr-x  11 root  admin  374  1 Feb 15:21 /Users
drwxrwxr-t  35 root  admin  1258 22 Jan 23:09 /

Add arguments to the ls call, or replace it e.g. with getfacl, as appropriate on your system to print ACLs and extended attributes if you're interested in them.

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