Bash Shell Check Whether a Directory is Empty or Not

by on November 22, 2007 · 41 comments· LAST UPDATED March 21, 2014

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How do I check whether a directory is empty or not under Linux / UNIX using a shell script? I would like to take some action if directory is empty on a Linux or Unix like system. How can I check from bash/ksh shell script if a directory contains files? How do I check whether a directory is empty or not?

There are many ways to find out if a directory is empty or not under Linux and Unix bash shell. You can use the find command to list only files.
Tutorial details
DifficultyEasy (rss)
Root privilegesNo
RequirementsNone
Estimated completion time2m
In this example, find command will only print file name from /tmp. If there is no output, directory is empty.

Check whether a directory is empty or not using find command

The basic syntax is as follows:

find /dir/name -type -f -exec command {} \;

OR GNU/BSD find command syntax:

find /path/to/dir -maxdepth 0 -empty -exec echo {} is empty. \;

OR

find /path/to/dir -type d -empty -exec command1 arg1 {} \;
In this example, check whether a directory called /tmp/ is empty or not, type:
$ find "/tmp" -type f -exec echo Found file {} \;
Sample outputs:

Found file /tmp/_.c
Found file /tmp/orbit-vivek/bonobo-activation-server-ior
Found file /tmp/orbit-vivek/bonobo-activation-register.lock
Found file /tmp/_.vsl
Found file /tmp/.X0-lock
Found file /tmp/.wine-1000/server-802-35437d/lock
Found file /tmp/.wine-1000/cxoffice-wine.lock
Found file /tmp/ksocket-vivek/Arts_PlayObjectFactory
Found file /tmp/ksocket-vivek/Arts_SimpleSoundServer
Found file /tmp/ksocket-vivek/secret-cookie
Found file /tmp/ksocket-vivek/Arts_AudioManager
Found file /tmp/ksocket-vivek/Arts_SoundServer
Found file /tmp/ksocket-vivek/Arts_SoundServerV2
Found file /tmp/vcl.XXf8tgOA
Found file /tmp/Tracker-vivek.6126/cache.db
Found file /tmp/gconfd-vivek/lock/ior

However, the simplest and most effective way is to use ls command with -A option:
$ [ "$(ls -A /path/to/directory)" ] && echo "Not Empty" || echo "Empty"
or
$ [ "$(ls -A /tmp)" ] && echo "Not Empty" || echo "Empty"
You can use if..else.fi in a shell script:

 
#!/bin/bash
FILE=""
DIR="/tmp"
# init
# look for empty dir 
if [ "$(ls -A $DIR)" ]; then
     echo "Take action $DIR is not Empty"
else
    echo "$DIR is Empty"
fi
# rest of the logic
 

Here is another example using bash for loop to check for any *.c files in the ~/projects/ directory:

 
# Bourne/bash for loop example 
for z in ~/projects/*.c; do
        test -f "$z" || continue
        echo "Working on $z C program..."
done
 

Check if folder /data/ is empty or not using bash only features

From the Linux and Unix bash(1) man page:

  • nullglob If set, bash allows patterns which match no files to expand to a null string, rather than themselves.
  • dotglob - If set, bash includes filenames beginning with a . in the results of pathname expansion.
#!/bin/bash
# Set the variable for bash behavior
shopt -s nullglob
shopt -s dotglob
 
# Die if dir name provided on command line
[[ $# -eq 0 ]] && { echo "Usage: $0 dir-name"; exit 1; }
 
# Check for empty files using arrays 
chk_files=(${1}/*)
(( ${#chk_files[*]} )) && echo "Files found in $1 directory." || echo "Directory $1 is empty."
 
# Unset the variable  for bash behavior
shopt -u nullglob
shopt -u dotglob
 

Sample outputs:

$ ./script.sh /tmp
Files found in /tmp directory.
$ mkdir /tmp/foo
$ ./script.sh /tmp/foo
Directory /tmp/foo/ is empty.

A note about ksh user

Try for loop as follows:

 
## In ksh93, prefix ~(N) in front of the pattern
## For example, find out if *.mp4 file exits or not in a dir
cd $HOME/Downloads/music/
for f in ~(N)*.mp4; do
        # do something if file found
        echo "Working on $f..."
done
 
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{ 41 comments… read them below or add one }

1 David November 23, 2007 at 7:36 pm

Seems to me that using ls is not required – in fact, it is doable within the shell alone:

set - `echo .* *`
if [ $# = "2" ] ; then
: empty directory
else
: not empty ...
fi

David

Reply

2 Raju November 23, 2007 at 9:06 pm

David,

It is not working for me. I’m using Debian + Bash 3. It returns 3 when directory is empty, it should be 2 as empty directory has only . and ..

Any idea?

Reply

3 David November 23, 2007 at 9:29 pm

Yes. I’d forgotten: when no matches are found (“*”) then the resulting text is the character unchanged. This should work better:

FILES=”`echo .* *`”
if [ $FILES = '. .. *' ] ; then
: empty dir
else
: not empty
fi

Reply

4 Scot January 6, 2009 at 1:06 am

find -type d -empty

Reply

5 TJRudd November 2, 2013 at 1:30 pm

`find . -depth -type d -empty` would work a little better..
EG:

 find . -depth -type d -empty -delete

Reply

6 Tomas M May 21, 2009 at 12:48 pm

Thanks Scot!

Reply

7 Kyle October 15, 2009 at 6:48 pm

Scot’s suggestion works absolutely perfectly.

Reply

8 Indie February 2, 2010 at 5:49 pm

A slight variation on the original post which does it numerically and includes dot files.

DIR=/home/user
[ $(( $(ls -a1 $DIR | wc -l) >= 3 )) = 0 ] && echo Empty || echo Nope

That’s a one and not an ‘l’ to the ls command. An empty directory only has the two entries – . & ..

Reply

9 nova May 6, 2010 at 5:16 am

Works with both BSD and GNU Linux find:
find "/nas/data" -maxdepth 0 -empty -exec echo {} is empty. \;
OR
find "/dir2" type d -empty -exec command1 -arg1 {} \;

Reply

10 daniel August 9, 2010 at 2:50 pm

I am trying to pass a directory path as a parameter to my bash script (which tests whether its empty), but the directory name contains spaces. Any suggestions?

Reply

11 Crístian Viana August 9, 2010 at 3:51 pm

enclose the directory name parameter in double quotes.

Reply

12 daniel August 10, 2010 at 8:49 am

The following code does not correctly identify empty directories. Using DIR=$1 then passing “home/dan/not empty” does not help, neither does using “home/dan/not\ empty” or home/dan/not\ empty.

#!/bin/bash

DIR=”home/dan/not empty”
if [ "$(ls -A $DIR)" ]; then
echo “$DIR is not empty”
else
echo “$DIR is empty”
fi

Reply

13 SnakE November 13, 2010 at 5:20 am

Replace

if [ "$(ls -A $DIR)" ]; then

with

if [ "$(ls -A "$DIR")" ]; then

That’s just another pair of quotes, no escapes. Should work.

Reply

14 pmcneil October 25, 2010 at 6:14 am

dude. give find some love ;-)

find . -type d -empty -exec touch {}/.empty \;

Reply

15 anonymous December 9, 2010 at 9:25 pm

find “/dir2″ -type d -empty -exec command1 -arg1 {} \;

Reply

16 kevin January 8, 2011 at 1:31 am

if [ "$(ls -A $DIR)" ]; then
How can I use this expression exclude one directory?

Reply

17 samoak May 4, 2011 at 7:40 am

what if the directory has files but each file is of 0 size?

best way is to do as below:
dir_full_path=”/tmp/foo”
if [ -d "$dir_full_path" ] ; then
if [ 4 -ge $(du -s "$dir_full_path" ] ; then
echo “empty directory $dir_full_path”
else
echo “non-empty directory $dir_full_path”
fi
fi

This snippet assumes that a directory size, by its own name, is always 4096 bytes, approximated to 4.0K evaluated to int as 4

Reply

18 Jairo November 9, 2011 at 4:29 am

Hi all,
someone please say me why this dont work.

src=”/Users/xxxx/scripts/dirtest”
for dir in `ls -R “$src”`
do
if [ -d "$dir" ]; then
echo this is a dir: $dir
fi
done

thanks

Reply

19 ReddyRace December 9, 2011 at 9:58 pm

Jairo :

Declare the variable ,before you use it.

Reply

20 stainless January 5, 2012 at 3:09 pm

Ok, this works, after hours of coding a simple solution was found to be best loll.What kept giving me trouble was the *, also I had found a solution a long time ago, but it didnt work if you had empty files in the directory.I tried all the IF statement solutions and it wont work in all situations.So best method is below:

#!/bin/bash

DIR=/var/www/tee

for i in $DIR/*
do
if [ -e $i ] && [ $(echo $?) -eq "0 " ]

then
echo The Directory is NOT EMPTY

else

echo The directory is EMPTY

fi
done

Reply

21 Vijay Kanta September 12, 2012 at 5:58 am

Very good Vivek. Cool.

Reply

22 DejanLupo September 13, 2012 at 10:46 am

if [ $( stat -c %h . ) -gt 2 ] ; then echo not empty; fi
Solution with “$(ls -A $DIR)” could exceed command buffer size.

Reply

23 plums September 18, 2012 at 8:35 am

Square brackets are only needed with if when you’re using test expressions, and by doing away with them you can do away with the process substitution. You can test the exit status of a program or command just by running it. (Getting ls to give an error code in this case requires a slight change in syntax.)

if ! ls -A $DIR/* > /dev/null 2>&1; then
    echo "Take action $DIR is not Empty"
else
    echo "$DIR is Empty"
fi

alternately,

if ls -A $DIR/* > /dev/null 2>&1; then
    echo "$DIR is Empty"
else
    echo "Take action $DIR is not Empty"
fi

Reply

24 Gibarian September 26, 2012 at 12:44 pm

If used in a script, I’d go with a slight modification of the first comment (as the “set” clobbers positional parameters, putting it in a function will clobber only local function parameters, not the global ones!):

shopt -s dotglob nullglob
is_empty_dir() {
  set - "`echo $1/*`"
  test -z "$1"
}

And then calling:

  is_empty_dir 

Reply

25 neuralys November 14, 2012 at 12:46 pm

why not using simple :

if [ ! -f /folder/* ]; then
echo “folder not empty”
else
echo “folder empty”
fi

Reply

26 ThePowerTool February 15, 2013 at 3:05 pm

I had a seriously nasty time with this.

In a bash script I wanted to:
1. Create and pass a list of directories that match a pattern
2. Use a variable to check if the directories matching the pattern were empty
3. Delete empty directories.

The challenge I ran into was with wildcard expansion in variables. I spent a little while pulling my hair out over ” and ‘ and ` until I figured out (the final solution was pretty simple).

Here is my short script that
1. creates a list of directories within $1 that match a pattern
– in this case the grep returns all directories that are 5 numerical digits
2. verifies whether or not content exists
3. deletes the directory if no content is present

#!/bin/bash
# List Empty Directories that are directories in the
# format ./##### If they are empty, delete them.

ls -d */ > testdir.txt
grep ‘[0-9]\{5\}’ ./testdir.txt > testdir2.txt
rm ./testdir.txt

i=1

while [ $i -le `wc -l ./testdir2.txt | gawk '{print $1}'` ]; do
line=`head -$i ./testdir2.txt | tail -1`
correctdirname=”./”$line
echo -n “Dir “$i” “$correctdirname

files=`echo $correctdirname $correctdirname*`
test=$correctdirname” “$correctdirname”*”
if [ "$files" == "$test" ]
then echo ” empty” #; rm -rf $correctdirname
else echo ” files found”
fi

i=`expr $i + 1`

done

For safety I commented out the delete/rm. Anyone trying this should test carefully before running this script and use a test directory with test data. The delete command will delete entire directories whether they are empty or not! Verify your scenario, verify the variables match your scenario, and double-check before uncommenting that rm command.

I hope someone finds this useful.

Reply

27 ThePowerTool February 15, 2013 at 3:11 pm

Minor correction:

I mistakenly said “1. creates a list of directories within $1 that match a pattern”
It should read “1. creates a list of directories within the current directory that match a pattern”

Also I didn’t remove testdir2.txt, created by the script in the current directory. A line to remove that could be added after the “done” to clean up the 2nd temporary file created by the script.

Reply

28 ThePowerTool February 15, 2013 at 3:25 pm

After having solved the logic problem I was overly-focused on I was playing around with additional information from the above posts and changed my if statment based upon the one provided by nixcraft, above:
My if original: if [ "$files" == "$test" ]
Nixcraft’s if: if [ "$(ls -A $DIR)" ]
My new if: if [ ! "$(ls -A $line)" ]

Using the if provided by Nixcraft I came up with an if that works in place of the if statement in my above script and is a little cleaner because it does not require creation of the $test variable. I put a ! in front of it so I could easily swap if statements. Alternately you could reverse the then-else.

Here is the updated script with the old vars and if commented out:

#!/bin/bash
# List Empty Directories that are directories in the
# format ./##### If they are empty, delete them.

ls -d */ > testdir.txt
grep ‘[0-9]\{5\}’ ./testdir.txt > testdir2.txt
rm ./testdir.txt

i=1

while [ $i -le `wc -l ./testdir2.txt | gawk '{print $1}'` ]; do
line=`head -$i ./testdir2.txt | tail -1`
correctdirname=”./”$line
echo -n “Dir “$i” “$correctdirname

# files=`echo $correctdirname $correctdirname*`
# test=$correctdirname” “$correctdirname”*”
# if [ "$files" == "$test" ]
if [ ! "$(ls -A $line)" ]
then echo ” empty” #; rm -rf $correctdirname
else echo ” files found”
fi

i=`expr $i + 1`

done

rm ./testdir2.txt

Note I added the final line to remove the 2nd test/data file.

Also you should be able to comment out the if and uncomment the 3 lines above it to switch back and forth between the two options.

Reply

29 ThePowerTool February 15, 2013 at 3:43 pm

This is why I don’t post often. I keep finding mistakes. I don’t know how other posters do it–such simple elegant posts that are correct.

Upon further inspection I realized my if statement, while it works in my bash, is using the wrong variable. I created the $correctdirname variable because grepping directories gave me ##### rather than ./#####.
if [ ! "$(ls -A $line)" ]

I believe you should be using $correctdirname for the reason above even though the script works for me–I don’t know if it will work generically given the difference.

The “more-correct” if-statement:
if [ ! "$(ls -A $correctdirname)" ]

Reply

30 TheOne May 24, 2013 at 9:07 pm

if [ ! "$(ls -A "$FOLDER")" ]; then
echo “$FOLDER is empty”
fi

Reply

31 Jonathan D. Lettvin June 26, 2013 at 6:57 pm

When searching for methods to automatically mount virtualbox shared folders,
reliable and correct methods are hard to distinguish from those that fail.
Failures include getting and setting permissions, as well as other problems.

Methods that fail include:
modifying /etc/fstab
modifying /etc/rc.local

I am fairly certain that rc.local can be used,
but no methods I have tried worked.
I welcome improvements on these guidelines.

On virtualbox 4.2.14 running nautilus (bash terminal) on an ubuntu 13.04 guest,
Below is a working method to mount Common (sharename)
on /home/$USER/Desktop/Common (mountpoint) with full permissions.
(Note the ‘\’ command continuation character in the find command.)

First time only: create your mountpoint, modify your .bashrc file, and run it.
Respond with password when requested.
These are the four command-lines needed.

mkdir $HOME/Desktop/Common
sudo echo “$USER ALL=(ALL) NOPASSWD:ALL” >> /etc/sudoers
find $HOME/Desktop/Common -maxdepth 0 -type d -empty -exec sudo \
mount -t vboxsf -o \
uid=`id -u $USER`,gid=`id -g $USER` Common $HOME/Desktop/Common \;
source ~/.bashrc # Needed if you want to mount Common in this bash.

All other times: simply launch a bash shell.

The find command detects an empty mountpoint directory.
If the Common directory is not empty, it does not run the mount command.

I hope this is error-free and sufficiently general.
Please let me know of corrections and improvements.

Reply

32 Janani August 4, 2013 at 5:58 am

How to make two directories “C_ Programming ” and “Shell Script” ?

Reply

33 Janani August 4, 2013 at 6:01 am

A)Create a text file “Pros_and_Cons_of_C.txt” in “C_programming” directory
B)Create a text file “Pros_and_Cons_of_C.txt” in “Shell_Script” directory
C)Write a suitable pros and cons for each text file in your own words using keyboards inputs.

Reply

34 Janani August 4, 2013 at 6:06 am

Write a shell script to create a directory “Shell2″ Create 10 text files “a5_1.txt” “a5_10.txt” using loop inside the directory “Shell2.” Give access privilege for those text files , read only for others and group , read and write for owner..

Please help me for above all forums that i sent. those are may be primary level questions , but i can’t understand for answer those questions. please help me for do my university assignment..

Thank you

Reply

35 Philippe Petrinko August 6, 2013 at 9:17 am

@Janani:

That’s great for you, learning Linux computer science, and this means first: learn. Nobody can do it for you.
Fortunately, somebody has built and offered to all a great resource to learn, which is also a cooperative work:
http://bash.cyberciti.biz/guide/Main_Page

Enjoy!

Reply

36 Philippe Petrinko August 6, 2013 at 9:20 am

@Janani:

I could have added, among other resources:

http://www.cyberciti.biz/tips/linux-unix-commands-cheat-sheets.html

Enjoy++ !

Reply

37 Erik Lundmark October 5, 2013 at 2:49 pm

Not a better solution, but this also works:

[[ `du $FOLDER` =~ ^4[^0-9] ]] && echo "is empty"

Reply

38 Erik Lundmark October 5, 2013 at 2:55 pm

Please remove/disregard my previous comment, this is what I meant. Checks for just one folder (current one) and it’s size being 4096 bytes.

[[ `du -ab $PWD` =~ ^4096[^0-9]+.$ ]] && echo "is empty"

Reply

39 Me June 6, 2014 at 5:13 am

#!/bin/bash

rm -rf “%*”
mkdir “%*”
echo NOW it’s empty.
exit 0

Reply

40 Chris August 26, 2014 at 3:08 pm

Thanks for this post! I have a comment and a potential method.

Method: Why wouldn’t this work?
ls $DIR/*
echo $? # a ’1′ would mean the directory is empty

Comment: As far as I can tell, this version, the find command version, and ls -A, will not detect a directory that contains subdirectories but is void of files. I am perplexed that the below does not work. Assume $DIR has a single subdirectory, foo, and neither have regular files:
find $DIR -type f -exec echo $DIR is empty \;

Thanks!

Reply

41 Chris August 26, 2014 at 3:25 pm

PS I did find for my ancillary problem (may contain subdirectories but no files) this solution:
let “$m = `find $DIR -type f | wc -l`” ; test $m = 0 ; echo $?

Also, a nit in my original suggestion: adjust the ls command so you don’t get unwanted output:
ls $DIR/* > /dev/null
echo $? # a ’1′ would mean the directory is empty

Reply

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