removing files which are in one folder from another folder linux shell

Question

I have two directories. DirA contains all the files which are in DirB . I want to remove all the files which are in DirB from DirA . How one could do it in linux command line?

I am using ubuntu.

Thanks

Answer 1

cd DirB
for i in *
do
    rm DirA/"$i"
done

Edit: Use double-quotes around $i to handle filenames containing spaces.

Answer 2

You can do that i for loop:

for f i DirB/*; do
    fn="${f##*/}"
    [[ -f "$fn" ]] && rm -f "DirA/$fn"
done

Answer 3

Here you have an example, with execution output, which would work also if filenames would contain spaces (an uncomfortable thing which I don't recommend, by the way):

root@folgore:/tmp/test# tree
.
├── DirA
│   ├── a
│   ├── b
│   ├── c
│   └── d
└── DirB
    ├── a
    ├── b
    ├── e
    ├── g
    ├── h
    └── r

2 directories, 10 files
root@folgore:/tmp/test# for f in `ls DirB/* | sed 's/ /_SPC_/g'`;do fa=`echo $f | sed 's/_SPC_/ /g;s/^DirB\//DirA\//'`;echo "removing $fa if exists";rm -f "$fa";done
removing DirA/a if exists
removing DirA/b if exists
removing DirA/e if exists
removing DirA/g if exists
removing DirA/h if exists
removing DirA/r if exists
root@folgore:/tmp/test# tree
.
├── DirA
│   ├── c
│   └── d
└── DirB
    ├── a
    ├── b
    ├── e
    ├── g
    ├── h
    └── r

2 directories, 8 files