Shell Programming and Scripting

#! /bin/ksh

echo "Enter the File : \c"
read filename

if [ -f $filename ]; then
  Check the owner AND Permissions of the file ----> Need to code this!!!
  if [ permissions are OK ]; then ----> i.e. permissions is as mentioned above
    do processing
  else
    echo "ERROR"
  fi
fi

OWNER=`ls -l file | awk '{print $3}'`
PERMS=`ls -l | awk '{print $1}' `
if [[ $OWNER = $USER && `echo $PERMS | grep '-r..------'` != "" ]]
then
your code
fi

#!/bin/sh

echo -n "File: "
read file

if [ -f $file ]; then

  if [ `ls -l $file | awk '{print $3'}` = "$USER" ] && \
     [ `ls -l $file | cut -c2` = "r" ] && \
     [ `ls -l $file | cut -c5-10` = "------" ] ; then

  echo "Owner of $file is YOU and you can read it."
  echo "Group and Other can't read, write or execute it."

  else

  echo "ERROR"
  exit

  fi

else

echo "$file does not exist."

fi

if ! chmod og-rwx "$file"; then
    echo "ERROR"
    exit 1
fi

... do processing ...