Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
This script creates a text file that contains all the current permissions of the entire linux system.
#!/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
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.