File permission demonstration script
From assela Pathirana
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#!/bin/bash
fmt="%7s%7s%7s%15s%15s\n"
printf $fmt umask file dirs files dirs
while read line
do
set -- $line
umask $1
touch tempfile
mkdir tempdir
fval=`ls -l tempfile|awk '{print $1}'`
dval=`ls -dl tempdir|awk '{print $1}'`
printf $fmt $1 "$(( 777 - $1 ))" "$(( 666 - $1 ))" $fval $dval
rm -rf temp*
done << EOF
022
027
002
006
007
077
EOF
will produce the following output:
umask file dirs files dirs
022 759 648 -rw-r--r-- drwxr-xr-x
027 754 643 -rw-r----- drwxr-x---
002 775 664 -rw-rw-r-- drwxrwxr-x
006 771 660 -rw-rw---- drwxrwx--x
007 770 659 -rw-rw---- drwxrwx---
077 714 603 -rw------- drwx------
