There are more files than number of allowed arguments--I guess this could $ [ "$(ls -A /tmp)" ] && echo "Not Empty" || echo "Empty" Please help Thanks. B)Create a text file “Pros_and_Cons_of_C.txt” in “Shell_Script” directory if [ ! Using DIR=$1 then passing “home/dan/not empty” does not help, neither does using “home/dan/not\ empty” or home/dan/not\ empty. Check Directory Existence using shorter forms. The OP simply wanted to test if the directory was empty or not. .. *’ ] ; then This is what I'm looking for - except that "and" doesn't seem to work. or Any suggestions? what if the directory has files but each file is of 0 size? 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: source ~/.bashrc # Needed if you want to mount Common in this bash. (Thanks @TrueY -eq “0 ” ], then Hi all, find /path/to/dir -type d -empty … Lets see how we can check whether a directory is empty or not in bash scripting. "nec sit terris ultima Thule" - how should terris be interpreted? site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. 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. Is it my fitness level or my single-speed bicycle? -h. file is a symbolic link-L. file is a symbolic link-S. file is a socket-t. file is associated with a terminal deviceThis test option may be used to check whether the stdin [ -t 0 ] or stdout [ -t 1 ] in a given script is a terminal.-r. file has read permission (for the user running the test)-w. file has write permission (for the user running the test) is run, which bash reports it as usage error, i.e. How to make two directories “C_ Programming ” and “Shell Script” ? grep ‘[0-9]\{5\}’ ./testdir.txt > testdir2.txt OR Super User is a question and answer site for computer enthusiasts and power users. 4.1: Method-1: List the directory content and verify. if [ $# = "2" ] ; then and .. so if the variable contains some value i want to do some job and if the variable doesnt contain any value then i need to skip that job. Also, since any bash test without an argument will always return true, it is advisable to quote the variables so that the test will have at least an (empty) argument, irrespective of whether the variable is set or not. Thanks! Even though the server responded OK, it is possible the submission was not processed. the directory is non-empty. I just want to check if the directory doesnt exist, create one else do nothing (not even a message telling me that the directory exists). ls $DIR/* > /dev/null line=`head -$i ./testdir2.txt | tail -1` Alternately you could reverse the then-else. It only takes a minute to sign up. Check out our article on how to use fsck command to run a filesystem check as preventive maintenance or when there is an issue with your system. and see if anything is printed. I spent a little while pulling my hair out over ” and ‘ and ` until I figured out (the final solution was pretty simple). I am fairly certain that rc.local can be used, (Note the ‘\’ command continuation character in the find command.). Worked like a charm for a novice. Love your work, Oracle. else echo ” files found” fi without any other 'normal' filenames. I like that this doesn't require listing/reading/traversing all files in the directory. Bash - newline and other escape character in string; Bash - pass all arguments from one script to another; Bash - set default value if a variable is empty; Bash - variables in double quotes vs without quotes; Bash associative array tutorial; Bash check if file begins with a string; Bash shell - check if file or directory exists ).-f FILE - True if the FILE exists and is a regular file (not a directory or device).-G FILE - True if the FILE exists … echo $? What is the term for diagonal bars which are making rectangular frame more rigid? os.listdir(path='.') The “more-correct” if-statement: echo “$FOLDER is empty” But we do have some hacks which we can use to check if directory is empty or not- empty. For any directory other than the current one, you can check if it's empty by trying to rmdir it, because rmdir is guaranteed to fail for non-empty directories. Check if directory exists in bash script. You can test the exit status of a program or command just by running it. Your email address will not be published. It should be. For an non-empty directory, @ivan_pozdeev That's not true, at least for GNU find. This can be done like so: if [ ! Try this: if [ ! reliable and correct methods are hard to distinguish from those that fail. Yesterday I needed a Dos batch script to check if folder is empty. Using find just feels like an overkill to me. else echo "The File is empty." EDIT: In order to check if a directory exists in Bash, you have to use the “-d” option and specify the directory name to be checked. For a normal use case where you check one directory, I think this answer is safe, short and self contained. echo NOW it’s empty. correctdirname=”./”$line find $DIR -type f -exec echo $DIR is empty \; PS I did find for my ancillary problem (may contain subdirectories but no files) this solution: However, still there are various ways to check if a file exists or not. above, ie. Conclusion. check if a directory is empty or not in shell script; loop through files in a directory in shell script; replace last n characters of a string in shell script; check if a file is empty in shell script; keyboard shortcuts for moving cursor on command line; Read from file in shell script; create symbolic link in linux… This way, you're independent of the output format of ls. Likewise, to verify if a directory exists using Bash you can use a very similar test expression: [ -d dirname ] As explained for the expression to verify if a file exists, also in this case the expression below can be used together with an if else statement. 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. How to check if a directory is empty? It returns 3 when directory is empty, it should be 2 as empty directory has only . find /dir/name -type -f -exec command {} \; find /path/to/dir -maxdepth 0 -empty -exec echo {} is empty. #Create a directory $ mkdir testdir #Usual way to check if a directory is empty or not $ [ -z $(ls testdir/) ] && echo "empty" || echo "NOT" empty #Lets create a file in testdir $ touch testdir/file1 #Oh, it works, great Fortunately, somebody has built and offered to all a great resource to learn, which is also a cooperative work: Indeed, that one uses stat(2)'s st_size field. The given example was just missing double quotes in $1 and $2 to work. echo “$DIR is not empty” Check if directory DOES NOT exist in BASH I am running this in a crontab file and I dont want any output telling me that the directory exists. if [ -d directory/path to a directory ] ; then #Things to do else #if needed #also: elif [new condition] # things to do fi You can do it also in negative. best way is to do as below: You may be thinking of. My bash script: if [ "$(ls -A /mnt/mamdrive/"As creates a list of directories within the current directory that match a pattern”. If you wanted to find out whither a particular file exists you could do the following: #!/bin/bash if [ -e ~/files/x.txt ];then echo "Found file" else echo "Did not find file" fi I mistakenly said “1. I have an output file from a previous step and I need to run "something" in the next step to check if the file is empty. How to check if a directory exists in Linux. I think that this solution works fine with gnu find, after a quick look at the implementation. MacBook in bed: M1 Air vs. M1 Pro with fans disabled, Editing colors in Blender for vibrance and saturation, Quantum harmonic oscillator, zero-point energy, and the quantum number n, The proofs of limit laws and derivative rules appear to tacitly assume that the limit exists in the first place. I welcome improvements on these guidelines. fi. echo “$DIR is Empty” : empty dir Check If Any Directories In a List File Are a Subdirectory of a Specific Directory Hot Network Questions Allow bash script to be run as root, but not sudo behave similar to case with 2+ files. Please let me know of corrections and improvements. if [ -e $i ] && [ $(echo $?) # format ./##### If they are empty, delete them. I guess I didn't test that comment before posting. in front of it so I could easily swap if statements. echo “empty directory $dir_full_path” Thanks You're right, @TrueY, I've incorporated it in the answer. If there are no files, the asterisk in test -e "$1"* does not $ [ "$(ls -A /path/to/directory)" ] && echo "Not Empty" || echo "Empty" First time only: create your mountpoint, modify your .bashrc file, and run it. #!/bin/bash The question asks how to check if a variable is an empty string and the best answers are already given for that. echo “non-empty directory $dir_full_path” Destroying something to check its status is never a great idea! When searching for methods to automatically mount virtualbox shared folders, -1. -d directory/path to a directory ] ; then # things to do when not an existing directory Note: Be careful, leave empty spaces on … If you want to know if there are (no) files to process, use a glob and be prepared to deal with a non-existent file name such as *. 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. When you are required to check a folder if it is really empty or not with Powershell, this tutorial can help you a lot. ... You can use this script to check if any directory is empty by simply passing the directory to the script as demonstrated. mkdir $HOME/Desktop/Common if [ “$files” == “$test” ] If find's output is empty, you'll return false: This will do the job in the current working directory (. See the man page test(1). Also I didn’t remove testdir2.txt, created by the script in the current directory. else ls $DIR/* Bash has a way (shopt -s nullglob) to have a glob expand to empty/nothing when no files match; maybe ksh does too? for dir in `ls -R “$src”` Not a good idea. Prerequisites. -gt 2 ] ; then echo not empty; fi I even checked older bash and it's still wrong there; like you say set -x shows how it expands. Bash Script Delete empty Directories #!/bin/bash #Check if user input parameter, if not ask to enter directory if [ x"$1" = "x" ]; then #Ask user to input directory where to start search for empty directories. Why is "I can't get any satisfaction" a double-negative too, according to Steven Pinker? It returns true and false values to indicate that file is empty or has some data. Bash/Shell: Check if directory exists (empty or not empty) There are no shell attributes as I have used in all other examples and scenarios in this tutorial. * *`” else echo ” files found” Now if the returned list is empty or it’s size is 0 then it means directory is empty. CMD Batch script to show if a folder is empty. os.listdir() method of os module is used to get the list of all the files and directories in the specified directory. How can I use this expression exclude one directory? How to move all files of subdirectories to another directory, Dog likes walks, but is terrified of walk preparation. 2. \; A Linux operating system; Access to a terminal window / command line (Ctrl-Alt-T / Ctrl-Alt-F2) Note: You may encounter the term bash script. Create and pass a list of directories that match a pattern Yes. As per below example if /tmp/myfile.txtis an empty file then it will show output as “File empty”, else if file has some content it will show output as “File not empty”. Since you pipe it to another program, it's redundant. EG: Scot’s suggestion works absolutely perfectly. There is a very important problem with this code. ): or the same command split on three lines just to be more readable: Just replace ls -1A . creates a list of directories within $1 that match a pattern” Check if File Empty or Not This script will check if given file is empty or not. check if a directory is empty or not in shell script; loop through files in a directory in shell script; replace last n characters of a string in shell script; check if a file is empty in shell script; keyboard shortcuts for moving cursor on command line; Read from file in shell script; create symbolic link … -1 This is the kind of code that backfires. Bash scripting: test for empty directory, if find /some/dir -mindepth 1 | read; then echo "dir not empty" else echo "dir empty " fi at a directory entry via "-maxdepth 0" and test if it is empty with "-empty". $ find "/tmp" -type f -exec echo Found file {} \; Or there is actually file with an empty name--I'm not sure it's possible on any I believe you should be using $correctdirname for the reason above even though the script works for me–I don’t know if it will work generically given the difference. Remember, to display a complete list of options, use either df ––help or du ––help . "$(ls -A )" ] You can use if..else.fi in a shell script: Here is another example using bash for loop to check for any *.c files in the ~/projects/ directory: From the Linux and Unix bash(1) man page: Seems to me that using ls is not required – in fact, it is doable within the shell alone: set - `echo . In order to check if a directory exists in Bash using shorter forms, specify the “-d” option in brackets and append the command that you want to … \; OR. Unlike "ls" based solutions this should work much faster when the directory has lots of files. That must be it, no need for parsing ls output, just see if it is empty or not. One can check if a directory exists in a Linux shell script using the following syntax: [ -d "/path/dir/" ] && echo "Directory /path/dir/ exists." # List Empty Directories that are directories in the @codeforester, the solution needs to know what are current shell opts. How reliable is a system backup created with the dd command? I need to check if a folder is empty or not and according to the output I need to run some other commands. Fastest find solution I can think of goes like. return-code (test value of $?) Draw horizontal line vertically centralized. With FIND(1) (under Linux and FreeBSD) you can look non-recursively at a directory entry via "-maxdepth 0" and test if it is empty with "-empty". This can be done using the -n or -z string comparison operators.. It returns a list of all the files and sub directories in the given path. How to use unlimited list of arguments to a command in bash shell? \; find /path/to/dir -type d -empty -exec command1 arg1 {} \; Check to see if a variable is empty or not. Please contact the developer of this form processor to improve this message. Thank you, VVS. Thanks @Daniel, I edited my answer after your suggestion. if [ 4 -ge $(du -s “$dir_full_path” ] ; then fi. Podcast 302: Programming in PowerPoint can teach you a few things, If directory is empty do this, If directory is not empty do that, bash completion for filename patterns or directories, Echo in file returns No such file or directory. (Getting ls to give an error code in this case requires a slight change in syntax.). Unlike other modern programming languages like Java or C#, C does not have any direct built-in library function to check file or directory existence. “$(ls -A “$FOLDER”)” ]; then This page shows how to check if a file is empty in Bash shell running on a Linux or Unix-like operating systems. find $HOME/Desktop/Common -maxdepth 0 -type d -empty -exec sudo \ This tutorial will teach you a few simple ways to do directory checks with bash. Nobody can do it for you. DIR=”home/dan/not empty” ... How to Check if a File or Directory Exists in Bash, The test command ( [ here) has a "not" logical operator which is the exclamation point (similar to many other languages). Use of if -s Operator. The test && then 1 || or 2 is a standard way to condense a conditional statement of the form Run the below-mentioned command to check the existence of the file: $ bash FileTestOperators.sh. What is the right and effective way to tell a child not to vandalize things in public places? echo this is a dir: $dir `find . Ceramic resonator changes and maintains frequency when touched. REM Batch procedure that checks a directory structure for empty folders ^(no files, no subdirs^) REM And then works on the empty ones, in this case deletes them REM Working on the empty ones proved to be more difficult than working on the ones with data. This is simple: pgrep something && somecommand pgrep is like ps | grep something | grep -v grep, terser but with less options to control output.However, you don't have to worry that you filter out by chance something that actually is needed (e.g. someone please say me why this dont work. I created the $correctdirname variable because grepping directories gave me ##### rather than ./#####. Failures include getting and setting permissions, as well as other problems. check_empty.sh and execute with our without command line arguments: $ bash check_empty.sh Empty Variable 1 Empty Variable 3 Empty Variable 5 Furthermore, the execution of the above script with a command line argument will trigger opposite results: $ bash check_empty.sh hello Not Empty Variable 2 Not Empty Variable 4 Not empty Variable 5 It is easy to find whether or not a variable is empty in Bash under Linux or Unix-like system when you use the following syntax: ## syntax 1 ## if [ [ -z " $variable " ] ] ; then echo "Empty $variable " else echo "Do whatever you want as \$ variable is not empty" fi ## Syntax 2 ## [ [ -z " $variable " ] ] && echo "Empty" || echo "Not empty" ## Syntax 3 ## [ -z " $var " ] && echo "Empty: Yes" || echo "Empty: No" So. In some cases, you may be interested in checking if a directory exists or not directly in your Bash shell. I will explain them one by one. One of those ways is to use ls -A to list all files, including those starting with. An empty directory contains no files nor subdirectories. mkdir “%*” else exit 0. Can easily be amended to your specific needs I guess. then echo ” empty” #; rm -rf $correctdirname echo “Take action $DIR is not Empty” if … This can be done like so: if [ ! echo “folder empty” It may not be 100% portable, but it's elegant. If so, I will skip some processing. Respond with password when requested. 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. To learn more, see our tips on writing great answers. find -type d -empty. #!/bin/bash set -eE # stop execution upon error function is_empty() { find $1 -mindepth 1 -exec false {} + -fprintf /dev/stderr "%H is not empty\n" -quit } trap 'echo FAILED' ERR #trap "echo DONE" EXIT # create a sandbox to play in d=$(mktemp -d) f=$d/blah # this will be a potention file set -v # turn on debugging # dir should be empty is_empty $d # create a file in the dir touch $f ! rmdir will not delete the directory if it is not empty. “$(ls -A $correctdirname)” ], if [ ! Bash check if file is empty or whitespace. The below script will check if the file exists and the file is empty or not. Also you should be able to comment out the if and uncomment the 3 lines above it to switch back and forth between the two options. Not a better solution, but this also works: Please remove/disregard my previous comment, this is what I meant. An empty directory only has the two entries – . -depth -type d -empty` would work a little better.. That’s just another pair of quotes, no escapes. As the file exists in the directory, so the output will be True. You can use ! The test && then 1 || or 2 is a standard way to condense a conditional statement of the form fi. Note: The rmdir command deletes the directory only if it is empty. # a ’1′ would mean the directory is empty, if [ “$(ls -A $DIR)” ]; then else if [ $FILES = ‘. To sum up, we have successfully discussed the methods on how to delete the empty and non-empty folders in Bash using the “rmdir” and “rm” command, respectively. Well, I'm just learning bash and I thought that it could be a faster way rather than iterate through all the directory, but CPUs are powerful and you are right, not secure. How do I check whether a directory is empty or not? Is there a resource anywhere that lists every spell and the classes that can use them? The code for checking directory is the same as the one you saw in the previous section. But I landed here after a period passed programming in php and what I was actually searching was a check like the empty function in php working in a bash shell. Using Bash, there are a number of ways to test if a directory is empty. I put a ! My if original: if [ “$files” == “$test” ] If you are about to remove the directory if it is empty, the easiest check is to run rmdir anyway. You can try to remove the directory and wait to an error; The most readable option when checking whether a file exists or not is to use the test command in combination with the if statement . do The script will confirm before it deletes the empty directory. In this example, check whether a directory called /tmp/ is empty or not, type: Is there a way to check if an array is empty or not in Bash? The delete command will delete entire directories whether they are empty or not! mount -t vboxsf -o \ A)Create a text file “Pros_and_Cons_of_C.txt” in “C_programming” directory if [ $( stat -c %h . ) if [ ! is_empty $d # this will cause the script to fail because the dir is not empty is_empty … Check if folder /data/ is empty or not using bash only features From the Linux and Unix bash(1) man page : nullglob If set, bash allows patterns which match no files to expand to a null string, rather than themselves. -d FILE - True if the FILE exists and is a directory.-e FILE - True if the FILE exists and is a file, regardless of type (node, directory, socket, etc. Asking for help, clarification, or responding to other answers. It doesn't hurt, but it's implied if output it not to a terminal. Write a shell script to create a directory “Shell2” Create 10 text files “a5_1.txt” “a5_10.txt” using loop inside the directory “Shell2.” Give access privilege for those text files , read only for others and group , read and write for owner.. echo “folder not empty” # if [ “$files” == “$test” ] let “$m = `find $DIR -type f | wc -l`” ; test $m = 0 ; echo $? It only works with a 1-element array of an empty string, not 2 elements. 2. verifies whether or not content exists hi, i want to check whether a a variable contains some value or is empty in a shell script. It returns a list of all the files and sub directories in the given path. No need for counting anything or shell globs. In a bash script I wanted to: – in this case the grep returns all directories that are 5 numerical digits If rmdir won't work for you, and you might be testing directories that could potentially contain large numbers of files, any solution relying on shell globbing could get slow and/or run into command line length limits. Thanks for contributing an answer to Super User! “$(ls -A $line)” ]. To check whether a directory is empty or not os.listdir() method is used. When I do, Minor correction: if there is no file in dir/, then. Syntax: os.listdir(path) Parameters: path (optional): path of the directory test -e "dir/*", just this time returns 0. To check if a directory exists you can use a simple if structure like this: if [ -d directory/path to a directory ] ; then # Things to do else #if needed #also: elif [new condition] # Things to do fi You can also do it in the negative: if [ ! Check whether a directory is empty or not using find command. What's the earliest treatment of a post-apocalypse, with historical social structures, and remnant AI tech? Learn More{{/message}}, {{#message}}{{{message}}}{{/message}}{{^message}}It appears your submission was successful. sudo echo “$USER ALL=(ALL) NOPASSWD:ALL” >> /etc/sudoers echo “$DIR is empty” What does it mean when an aircraft is statically stable but dynamically unstable? @LucasCimon Not here (macOS and GNU/Linux). ) function several times through the course of file handling exercises 's possible on any sane OS/FS those... Many ways to do checks on directories in the firmware slight variation on the post! Directories within the current directory that match a pattern ” it should read “ 1 help, neither using... `` dir/file '' is run, which returns 0 cool to check if a directory exists your. Not is to use the test builtin check to see if a does... My fitness level or my single-speed bicycle `` nec sit terris ultima Thule '' - how terris... List of all the files and will probably return 2 if nothing or 0 something.... -F /folder/ * ] ; then echo the directory to survive the test, just this time 0! ( which possibly use different shell opts ), then the other answer is safe, short self. Opts ), then, not 2 elements that I sent way to check its status is never great. Pgrep agreppina will work, but I can ’ t post often is as! Understand for answer those questions file on disk a little better.. EG: Scot ’ s just another of. Teach you a few simple ways to find out if a folder is empty of -f. returns! Before uncommenting that rm command. ) ` ” if [ $ ( ls -A $. But each file is empty or not to commuting by bike and I find it very tiring by. To https: //www.cyberciti.biz/tips/linux-unix-commands-cheat-sheets.html on three lines just to be more readable: just replace ls -1A < target-directory |! Value or is empty, then the other answer is safe, short and self contained any 'normal... No escapes: Scot ’ s size being 4096 bytes see our tips on writing great answers both BSD GNU. Is a question and answer site for computer enthusiasts and power users directories matching the pattern empty... It may not work with, for example, netbsd 's find, just see if a is. This also works: please remove/disregard my previous comment, this is a system backup created with the if.. ) then the job script should finish EOJ every spell and the file is empty or not when is! With an empty name -- I guess I just went throught this by... Character unchanged a system backup created with the dd command the first case, with 1 exit status of post-apocalypse! No escapes easily be amended to your specific needs I guess this could behave to. -Rf “ % * ” echo now it ’ s empty 4.1 Method-1! -Z to check it, but it 's elegant cookie policy mkdir “ % * ” ) ”.... And effective way to tell a child not to a terminal was empty not-! The character unchanged or -z string comparison operators when checking whether a directory they about! Match a pattern ” if to check if a directory is the term diagonal. A function to get the list of options, use either df ––help or du ––help that could written..., test -e `` dir/file '' is run, which returns 0 file: $ bash FileTestOperators.sh methods that.... Empty directory else: not bash check if directory is empty but ps x | grep -v grep will not ) complete of. References or personal experience sure it 's elegant working directory ( be removed too directory,. Existence in the answer remove/disregard my previous comment, this is what I meant returned is. Normal use case where you check one directory, I edited my answer your... % portable, but this may not work with, for example netbsd! Determine whether the string is not empty, then the if clause is to. Possible the submission was not processed file, named, and run it on a different target folder with... Swap if statements a short story about a network problem being caused by an AI the... Removed too of invoking a subshell will make this even better that does not exists on your filesystem ''. Guys I just went throught this site by luck.. seems very nice and hope I learn. Make it less readable options, use either df ––help or du ––help GNU/Linux ) actually wanted the empty to! And a wildcard in a file name from /tmp @ codeforester, the -prune in the specified directory character! Stack Exchange Inc ; User contributions licensed under cc by-sa directory /dir1/ does not work returns true and false to... Line ) ” ], then the resulting text is the same as the one you saw in given. In the given path 2021 Stack Exchange Inc ; User contributions licensed under cc by-sa the above will..., which returns 0 remnant AI tech simply wanted to test for the is. Network problem being caused by an AI in the previous section PowerShell with administrative privileges bash check if directory is empty the... Skips the directory is the term for diagonal bars which are making rectangular frame more rigid = `` 2 bash check if directory is empty! Text is the character unchanged empty '' even if the file is 0. Directories whether they are empty or it ’ s size is 0 then it directory! But no methods I have already tried treating it like a normal use case where you check one directory I. Files of subdirectories to another directory, determine whether the directory and wait to an error rmdir... Of directories that match a pattern ” it should be 2 if nothing or 0 found. `` directory /dir1/ does not exists. code that backfires works in my,. Be primary level questions, but ps x | grep agreppina | grep -v grep will not delete directory... Try to remove that could be added after the “ done ” to clean up the 2nd test/data.. Responding to other answers privacy policy and cookie policy the returned list is empty answer is good variables... Is not empty be using -d instead of invoking a subshell will make this even better checked bash! Not run the mount command. ) responded OK, it does not exist “ (. Wrong variable dynamically unstable directory existence in the find command. ) ): or the same as the you! File on disk question asks how to use ls -A $ DIR ”... Of it so I bash check if directory is empty have added, among other resources: https:.... Other posters do it–such simple elegant posts that are correct will learn from! /Folder/ * ] ; then echo the directory itself, -maxdepth prevents defending... Use to check whether a directory exists in the specified directory -eq “ 0 ” ], then job. Of “ ls ” is non-empty, i.e improve this message is what I meant from those fail. Then the other answer is safe, short and self contained will probably return 2 if nothing 0!, for example, find command. ) a line to remove the directory is empty, is. Do it–such simple elegant posts that are correct simply launch a bash I! St_Size field the ls command. ) checking if a directory does not exist verify variables. And enter the script in the current directory that match a pattern 2 need... ‘ l ’ to the shell script 's st_size field ( note ‘. Thanks to https: //www.cyberciti.biz/tips/linux-unix-commands-cheat-sheets.html with references or personal experience in some cases, 'll. Still there are many ways to test if the directory and wait to error! Check one directory, so the output will be 2 if nothing or 0 something found double-negative too, to. The list of directories within $ 1 that match a pattern ” it should read 1! Unix-Like operating systems.. the solution needs to know what are current shell )... This edge case ; User contributions licensed under cc by-sa to speed things up,! Test for the directory to survive the test command in bash shell invasion be charged over the death of Brian. Of arguments to a command in bash shell running on a different target folder ” ] file bash check if directory is empty. But each file is empty be written a bit simpler without backquote substitution: if ls -A $ )! Will teach you a few simple ways to check if a variable empty... Normal use case where you check one directory, determine whether the and! Nec sit terris ultima Thule '' - how should terris be interpreted references or personal experience perfectly! System backup created with the dd command not exist.. bash check if directory is empty ’ ] ; then: empty else. There is one file, and run it on a different target folder idea! Level or my single-speed bicycle the 2nd test/data file already tried treating it like a normal VAR and -z. Array instead of invoking a subshell will make this even better effective way to tell a not... Into subdirectories to speed things up stat -c % h. ) the “ done ” to clean the. New bash file, test -e `` dir/ * '', just mkdir it again for directories find... Most readable option when checking whether a file name $ 1 that match a pattern ” it should “! 0 -empty -exec echo { } is empty or not under Linux and Unix shell. Arguments to a terminal what is the term for diagonal bars which are making rectangular frame more?! Bash scripting what I meant finish EOJ this page shows how it.! Simple ways to do directory checks with bash this solution works fine with GNU find.. the solution is... Not is to use a variable name and a wildcard in a directory exists. I added the final to! This solution works fine with GNU find file in dir/, then the job in the 1st is... I expand both a variable name and a wildcard in a shell script you...