UNIX for Dummies Questions & Answers

I need a shell script that accepts 2 directories names bar1 and bar2
as arguments , and deletes those files in bar2 which are are identical to their name
spaces in bar1.

I tried with this code but it gives error.
if [ $# -eq 1 ]
then
echo " syntax <comnd dir1 dir2 > "
exit
else

#echo $1 $2
for i in `ls $1`
do
for j in `ls $2`
do
if [ $i=$j ]
then
unlink $j
fi
done

done
fi

o/p :-
bash-3.1$ sh 17.sh
unlink: cannot unlink `bar1': Is a directory
unlink: cannot unlink `bar2': Is a directory
unlink: cannot unlink `bar1': Is a directory
unlink: cannot unlink `bar2': Is a directory
unlink: cannot unlink `bar1': Is a directory
unlink: cannot unlink `bar2': Is a directory
bash-3.1$

Thnak you
Krish

Code:

#!/bin/ksh
ls $1 > one
ls $2 > two
awk 'FILENAME=="one" {arr1[$0]++}
       FILENAME=="two" && $0 in arr1 {print $0} ' one two > dupfiles
# this PART IS DANGEROUS
while read fname
do
   rm $2/$fname
done < dupfiles

This creates a file that has the names of the duplicates found in dir==$2 then deletes them from directory $2. Be careful this script could clobber something you really need. It also DOES NOT consider links, which could be important. All in all this script is not a great idea - but I think it does what you specifed

Try:

Code:

for each `comm -12 <(ls -1 dir1 | sort) <(ls -1 dir2 | sort)`
do
rm dir2/$each
done

Still I'm getting errors...

I think following is the best script to do your task.Before you remove the particular file in bar2 directory,you need to check whether it is a file or not.

Code:

j=0
for i in `ls dir1 `
do
arr[$j]=$i
let j+=1
done
for i in `ls dir2`
do
if [[ -f dir2/$i ]];then
for((k=0;k<${#arr[@]};k++))
do
if [[ ${arr[$k]} == $i ]]
then
rm dir2/$i
fi
done
fi
done

Try this ,

Code:

if [ $# -ne 2 ]
then
        echo "Usage : command dir1 dir2"
        exit
else
for i in `ls $1`
do
        for j in `ls $2`
        do
                if [ $i = $j ]
                then
                        rm $2/$j;
                fi
         done
 done
fi

Thank you mr. karthigayan'

Now the script works fine.....