Linux list all files in all directories

ls command in Linux/Unix

ls is a Linux shell command that lists directory contents of files and directories.

ls syntax

ls command options

ls command main options:

option	description
ls -a	list all files including hidden file starting with ‘.’
ls —color	colored list [=always/never/auto]
ls -d	list directories — with ‘ */’
ls -F	add one char of */=>@| to enteries
ls -i	list file’s inode index number
ls -l	list with long format — show permissions
ls -la	list long format including hidden files
ls -lh	list long format with readable file size
ls -ls	list with long format with file size
ls -r	list in reverse order
ls -R	list recursively directory tree
ls -s	list file size
ls -S	sort by file size
ls -t	sort by time & date
ls -X	sort by extension name

ls command examples

You can press the tab button to auto complete the file or folder names.

List directory Documents/Books with relative path:

List directory /home/user/Documents/Books with absolute path.

List root directory:

List parent directory:

List user’s home directory (e.g: /home/user):

List with long format:

Show hidden files:

List with long format and show hidden files:

Sort by date/time:

Sort by file size:

List all subdirectories:

Recursive directory tree list:

List only text files with wildcard:

ls redirection to output file:

List directories only:

List files and directories with full path:

ls code generator

Select ls options and press the Generate Code button:

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Linux / UNIX List Just Directories Or Directory Names

You can use combination of ls command, find command, and grep command to list directory names only. You can use the find command too. In this quick tutorial you will learn how to list only directories in Linux or UNIX.

Tutorial details
Difficulty level	Easy
Root privileges	No
Requirements	Linux, macOS, or Unix terminal
Est. reading time	5 minutes

Display or list all directories in Unix

Type the following command:
$ ls -l | grep `^d’
$ ls -l | egrep `^d’
Or better try the following ls command only to list directories for the current directory:
$ ls -d */
Sample outputs:

Fig.01: List Directories in Unix and Linux Systems

Linux list only directories using ls command

Run the following ls command:
ls -d */

Listing only directories using ls command in Linux or Unix-like systems

Linux Display or list only files

Type the following command to display list only files in Linux or Unix:
$ ls -l | egrep -v ‘^d’
$ ls -l | egrep -v ‘^d’
The grep command is used to searches input. It will filter out directories name by matching first character ‘ d ‘. To reverse effect i.e. just to display files you need to pass the -v option. It invert the sense of matching, to select non-matching lines.

Task: Create bash shell aliases to save time

You can create two aliases as follows to list only directories and files.
alias lf=»ls -l | egrep -v ‘^d'»
alias ldir=’ls -d */’
##alias ldir=»ls -l | egrep ‘^d'»
Put above two aliases in your bash shell startup file:
$ cd
$ vi .bash_profile

Append two lines:
alias lf=»ls -l | egrep -v ‘^d'»
alias ldir=’ls -d */’
#alias ldir=»ls -l | egrep ‘^d'»
Save and close the file in vim. Now just type lf – to list files. Again run ldir to list directories only:
$ cd /etc
$ ldir
Sample outputs:

List directory names only:
$ cd /etc
$ ldir

Sample outputs:

Use find command to list either files or directories on Linux

The find command can be used as follows to list all directories in /nas, enter:

Pass the -maxdepth 0 to limit listing to the starting-points i.e. the current working directory only:
find /path/to/dir -maxdepth 1 -type d
find . -maxdepth 1 -type d
find . -maxdepth 1 -type d -ls

Listing only directories using the find command in Linux

Putting it all together

Say you want to find all directories ending with .bak extension and delete it, run the following find command in the current directory:
find . -type d -iname «.bak» -delete
Verify it:
find . -type d -iname «.bak» -ls
The following shell script does two things for Apache/Nginx/Lighttpd Webroot such as /webroot/:

1. First, finds all files and directories and set permission to read-only for security reasons.
2. Second, it allows our web server to read files regardless of permission so that we don’t get an HTTP/403 error.

In other words, all write permissions are removed from Webroot. The server/web-app can only read files but can not alter any files or upload any files. It helps reduces attack surfaces provided that you configure the rest of the server and web application firewall correctly.

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How to show recursive directory listing on Linux or Unix

I am a new Linux system user. How do I see a recursive directory listing on macOS Unix system? In Linux, how can I get a recursive directory listing?

Introduction – If you like to receive the list, all directories and files recursively try the following commands.

Tutorial details
Difficulty level	Easy
Root privileges	No
Requirements	Linux and Unix-like OS
Est. reading time	3 minutes

What is a recursive listing of files?

Recursive means that Linux or Unix command works with the contains of directories, and if a directory has subdirectories and files, the command works on those files too (recursively). Say you have a directory structure as follows:
tree dir1

From the above outputs, it is clear that running the tree dir1 gives a list of dir1 directory and its subdirectories and files. The base directory is dir1. Then you have all the child directroies. All all the child directories have additional files and directories (say grand directories), and so on. You can use various Linux commands going through each directory recursively until it hits the end of the directory tree. At that point Linux commands come back up to a branch in the tree a does the same thing for any sub-directories if any.

How to get a recursive directory listing in Linux or Unix

Try any one of the following command:

1. ls -R : Use the ls command to get recursive directory listing on Linux
2. find /dir/ -print : Run the find command to see recursive directory listing in Linux
3. du -a . : Execute the du command to view recursive directory listing on Unix

Let us see some examples to get a recursive directory listing in Unix or Linux systems.

Linux recursive directory listing command

Type the following command:
ls -R
ls -R /tmp/dir1

Linux recursive directory listing using ls -R command.

Unix recursive directory listing command

Since, not all versions of Linux, macOS, *BSD, and Unix-like system have -R option for the ls command. Try to use find command:
find . -print
find /tmp/dir1 -print
find /tmp/dir1/ -print -ls

Recursive directory listing in Linux or Unix using the find command

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How to list all files recursively in a directory

Our final example uses the du command as follows:
du -a .
du -a /tmp/dir1/
You can also use the tree command as follows:
tree .
tree /tmp/dir1/

Recursively working with files

It is possible to run command recursively on files. The syntax is:
my-command-here $(find /dir/ -name ‘pattern’ -print)
rm -i $(find /home/nixcraft/ -name ‘*.bak’ -print)
Of course, your can run command using find itself:
find /dir1/ -name ‘pattern’ -print -exec command ;
find /dir1/ -name ‘pattern’ -print -exec command <> ;
find /dir/2/foo/bar -name «*.pl» -exec rm -rivf <> \;
find /dir1/ -type f -name «*.doc» -exec rm -fiv <> \;
## find file recursively and delete them ##
find /dir1/ -name ‘pattern’ -print -delete
See “Linux / Unix: Find And Remove Files With One Command On Fly” for more info.

Conclusion

You learned how to list all files recursively in a directory under Linux, macOS, *BSD and Unix-like operating system using the ls, du, and find commands.

🐧 Get the latest tutorials on Linux, Open Source & DevOps via

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The Linux LS Command – How to List Files in a Directory + Option Flags

Since the creation of Unix in the 1970s, a lot of operating systems have used it as their foundation. Many of these operating systems failed, while others succeeded.

Linux is one of the most popular Unix based operating systems. It’s open source, and is used all over the world across many industries.

One amazing feature of the Linux operating system is the Command Line Interface (CLI) which allows users to interact with their computer from a shell. The Linux shell is a REPL (Read, Evaluate, Print, Loop) environment where users can enter a command and the shell runs it and returns a result.

The ls command is one of the many Linux commands that allow a user to list files or directories from the CLI.

In this article, we’ll go in depth on the ls command and some of the most important flags you’ll need day-to-day.

Prerequisites

• A computer with directories and files
• Have one of the Linux distros installed
• Basic knowledge of navigating around the CLI
• A smile on your face 🙂

The Linux ls Command

The ls command is used to list files or directories in Linux and other Unix-based operating systems.

Just like you navigate in your File explorer or Finder with a GUI, the ls command allows you to list all files or directories in the current directory by default, and further interact with them via the command line.

Launch your terminal and type ls to see this in action:

How to list Files in a Directory with Options

The ls command also accepts some flags (also known as options) which are additional information that changes how files or directories are listed in your terminal.

In other words, flags change how the ls command works:

PS: The word contents used in throughout the article refers to the files and directories being listed, not the actual contents of the files/directories ?

List files in the current working directory

Type the ls command to list the contents of the current working directory:

List files in another directory

Type the ls [directory path here] command to list the contents of another directory:

List files in the root directory

Type the ls / command to list the contents of the root directory:

List files in the parent directory

Type the ls .. command to list the contents of the parent directory one level above. Use ls ../.. for contents two levels above:

List files in the user’s home directory (/home/user)

command to list the contents in the users’s home directory:

List only directories

Type the ls -d */ command to list only directories:

List files with subdirectories

Type the ls * command to list the contents of the directory with it’s subdirectories:

List files recursively

Type the ls -R command to list all files and directories with their corresponding subdirectories down to the last file:

If you have a lot of files, this can take a very long time to complete as every single file in each directory will be printed out. You can instead specify a directory to run this command in, like so: ls Downloads -R

List files with their sizes

Type the ls -s command (the s is lowercase) to list files or directories with their sizes:

List files in long format

Type the ls -l command to list the contents of the directory in a table format with columns including:

• content permissions
• number of links to the content
• owner of the content
• group owner of the content
• size of the content in bytes
• last modified date / time of the content
• file or directory name

List files in long format with readable file sizes

Type the ls -lh command to list the files or directories in the same table format above, but with another column representing the size of each file/directory:

Note that sizes are listed in bytes (B), megabytes (MB), gigabytes (GB), or terabytes (TB) when the file or directory’s size is larger than 1024 bytes.

List files including hidden files

Type the ls -a command to list files or directories including hidden files or directories. In Linux, anything that begins with a . is considered a hidden file:

List files in long format including hidden files

Type the ls -l -a or ls -a -l or ls -la or ls -al command to list files or directories in a table format with extra information including hidden files or directories:

List files and sort by date and time

Type the ls -t command to list files or directories and sort by last modified date and time in descending order (biggest to smallest).

You can also add a -r flag to reverse the sorting order like so: ls -tr :

List files and sort by file size

Type the ls -S (the S is uppercase) command to list files or directories and sort by date or time in descending order (biggest to smallest).

You can also add a -r flag to reverse the sorting order like so: ls -Sr :

List files and output the result to a file

Type the ls > output.txt command to print the output of the preceding command into an output.txt file. You can use any of the flags discussed before like -la — the key point here is that the result will be outputted into a file and not logged to the command line.

Then you can use the file as you see fit, or log the contents of the file with cat output.txt :

.

Conclusion

There are tons of other commands and combinations you can explore to list out files and directories based on your needs. One thing to remember is the ability to combine multiple commands together at once.

Imagine you want to list a file in long format, including hidden files, and sort by file size. The command would be ls -alS , which is a combination of ls -l , ls -a , and ls -S .

If you forget any command or are unsure about what to do, you can run ls —help or man ls which will display a manual with all possible options for the ls command:

Thanks for reading!

Software Engineer, Content Creator & Developer Advocate.

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