This script creates a text file that contains all the current permissions of the entire linux system.

get_all_permissions.sh

#!/bin/bash

### ——————————————————————– ###

# This script creates a text file that contains all the current permissions
# of the entire linux system.

# Run: sudo bash get_all_permissions.sh

# Location: http://virtualparadise.wordpress.com/2010/04/29/linux-repair-permissions
# Date Created: 2/16/2010
# Date Modified: 2/16/2010

# Permissions Required: Run as root
# Notes: Errors will appear in the /proc directory, these are expected

### ——————————————————————– ###

# Converts the r,w, and x characters into number values
# for use with chmod
function getValue {
    VALUE=0

    R=$(echo $1 | awk '{print substr($1, 1, 1)}')
    W=$(echo $1 | awk '{print substr($1, 2, 1)}')
    X=$(echo $1 | awk '{print substr($1, 3, 1)}')

    if [ "$R" = "r" ]; then
        VALUE=`expr $VALUE + 4`
    fi
    if [ "$W" = "w" ]; then
        VALUE=`expr $VALUE + 2`
    fi
    if [ "$X" = "x" ]; then
        VALUE=`expr $VALUE + 1`
    fi

    echo $VALUE
}

# Separates each of the different categories of permissions
# and then passed them to the conversion function.
# Finally, creates a string with all 3 numbers side by side
function getChmod {
    USERSECT=$(echo $1 | awk '{print substr($1, 2, 3)}')
    GROUPSECT=$(echo $1 | awk '{print substr($1, 5, 3)}')
    WORLDSECT=$(echo $1 | awk '{print substr($1, 8, 3)}')  

    USERV=$(getValue $USERSECT)
    GROUPV=$(getValue $GROUPSECT)
    WORLDV=$(getValue $WORLDSECT)
    echo $USERV$GROUPV$WORLDV #:$2
}

function isValid {
    case $1 in
    -)
        return 1;;
    d)
        return 1;;
    l)
        return 1;;
    *)
        return 0;;
    esac
}

# Set the debug value to display additional output
DEBUG=false

# List the entire filesystem
ls -Rl / > permissions.txt

# Value prefixed to each file name of the current
# directory
CURDIR=""

# Loop through the result of ls-RL on the root
# and parse through extracting the permissions,
# owners, and full file names.
while read LINE
do
    # First column – Permissions
    COL1=$(echo $LINE | awk -F" "  '{print $1}')
    # Third column – User
    COL3=$(echo $LINE | awk -F" "  '{print $3}')
    # Fourth column – Group
    COL4=$(echo $LINE | awk -F" "  '{print $4}')
    # Ninth column – File name
    COL9=$(echo $LINE | awk -F" "  '{print $9}')

    # First charater
    CHAR1=$(echo $LINE | awk '{print substr($1, 1, 1)}')

    # If the line is a directory
    if [ "$CHAR1" = "/" ]; then
        # Remove the last colon
        CURDIR=$(echo $LINE | sed 's/:/\//')
        # Replace // with / if found
        CURDIR=$(echo $CURDIR | sed 's/\/\//\//')
    fi

    # If the line is a file, link, or directory
    isValid $CHAR1
    if [ "$?" = "1" ]; then
        # Get the chmod numeric permissions value
        CHMODVALUE=$(getChmod $COL1 $LINE)
        # If debugging, output additional variables
        if [ "$DEBUG" = true ]; then
            echo ""
            echo $LINE
            echo $CURDIR$COL9
            echo $CHMODVALUE
            echo $COL3
            echo $COL4
        fi
    # Output the chmod command
    echo "chmod $CHMODVALUE -R $CURDIR$COL9"
    # Output the chown command
    echo "chown $COL3:$COL4 -R $CURDIR$COL9"
    fi
done < permissions.txt

exit

#for file in `cat permissions.txt`; do
#    echo $file
#done