ls command in kali linuxWhen testing Kali Linux for security, hackers can enter if those files were not included in your scan for hidden files.
A case in point is the Mumbai hacker who missed the hidden .ssh key and allowed the attacker to take control of his entire network.
In our guide you’ll find 15 easy ways to refine your "ls" command to make sure you include everything you need for your upcoming tests.
Once you finish this guide you will:
- know your way around the various
"ls" command optionsin Kali Linux, - be able to find your way around the directories on Kali Linux, and
- easily identify all hidden files and develop good testing habits when performing penetration tests.
You will have a solid foundation in how to perform checks against systems using the terminal as an ethical hacker!
Table of Contents
Benefits of ls command in kali linux: ls command basic usage
The ls command is the absolute heartbeat of your terminal navigation in Kali Linux. Short for “list,” it allows you to see exactly what files and folders occupy your current working directory instantly.
Without using ls, you are essentially flying blind in a dark room; you cannot interact with what you cannot see. In a pentesting scenario, simply typing ls is your first step toward situational awareness.
Knowledge of the plain ls command ensures you can quickly verify that your payloads or scripts were successfully downloaded or moved. This saves you from the frustration of “file not found” errors during high-pressure tasks.
By executing ls /etc, you can list contents of specific directories without changing your current location. This skill allows you to peek into configuration folders while staying focused on your active exploit directory.
ls command kali linux flags
The true power of the ls command in Kali Linux comes from simple flags you add after a dash to see more details.
ls: Shows files & folders in current directoryls folder_name: Shows contents of a specific folder-l: Lists files with details like size, owner, and permissions-a: Shows all files, including hidden ones starting with a dot-h: Human readable size (KB, MB, GB)-la: Combines -a and -l for complete hidden file details ⭐-lah: Best combo – all files + full details ⭐⭐⭐-F: Adds symbols to show file types (slash / for folders, * for executable)-d */: Show only folders-p: Adds / after directories-t: Newest files first-r: Reverse order-S: Largest files first-ltr: Oldest files first ⭐-R: Shows files in all subfolders too (recursive)-Rlh: Recursive + readable + detailed-1: One file per line-m: Lists files separated by commas, easy to copy-i: Show inode number-n: Show UID & GID (numbers)-Q: Show names in quotes
These flags turn basic file listing into powerful security scanning tools for pentesting!
Benefits of ls command in kali linux: ls -la hidden files kali
In ethical hacking, the most dangerous files are hidden by default. In Linux, hidden files start with a . like .bash_history and .ssh. Regular ls can’t see them.
During post-exploitation, ethical hackers must use ls -la to find these stealth files. Attackers often hide backdoors and configs in hidden files to avoid detection.
ls -la also reveals .env files and .git folders containing API keys and hard-coded passwords that can compromise entire systems.
The command shows . (current directory) and .. (parent directory) with their permissions. Understanding these helps ethical hackers plan privilege escalation through path manipulation.
ls -l long listing format
The “long listing” format provided by the ls -l command will give any security auditor a wealth of Metadata in regards to file and directory information.
This command provides information about file permissions, the number of hard links, the owner name, the group name, and the size of the file in bytes.
By evaluating the file permissions (e.g., -rwxr-xr-x), you can determine whether a sensitive file is accessible by the general public (world-readable).
The example of /etc/shadow having 644 permissions would provide access to password hashes right away.
You can also see how to interpret the owner and group columns, giving you a good idea of the hierarchy of the organization and helping you to better target users with elevated privileges.
The timestamp column contains the date and time of the most recent modification to a file.
In the case of an incident response team, the timestamp allows you to know when a malicious web shell was uploaded.
ls -h human readable sizes
When using the ls -l command, the size of the files will be output in bytes, which can be confusing for larger files such as disk images and database dumps because the numbers are so large.
For example, a file that is 5GB would output 5368709120 bytes, which is difficult to interpret quickly.
However, by using the -h option on the ls command, the sizes will be converted from a long string of numbers into a more understandable format, where sizes are displayed as K, M, or G.
This will help ensure that you know how much information you are importing or downloading right away.
Knowing this skill also helps to eliminate the problem of running out of space on your local storage when import/exporting large files from an object.
Using the -h option on the ls command is a simple method of preventing your system from crashing during sensitive tasks.
Additionally, being able to provide a human-readable size of your data to clients allows your communications to come across as more professional.
Rather than saying a log file is 4GB, you can communicate to your client in a manner that is not confusing, simply by letting them know that the file you are working on is 4GB in size.
Benefits of ls command in kali linux: ls -R recursive directory tree
When operating on a system, it is essential to understand the structure of a project or system when your access rights permit you to do so.
Using the command ls -R allows you to view all files and directories in the current directory, as well as all subdirectories recursively.
This also provides a significant advantage for reconnaissance purposes, as it gives an overview of the complete directory hierarchy that exists on the target system.
You will develop the skills necessary to use the “Screen Output Piping” feature of UNIX by combining ls -R and grep.
For example, if you want to list all the files with the ".conf" extension on the target system, you would enter ls -R | grep ".conf" into your terminal.
The combination of ls -R and grep produces an enormous amount of data, but is the best method for performing a complete audit of the target system.
Thus, it is a good way to ensure you do not miss any parts of the target’s filesystem during your investigation of its configuration and files.
ls -t sort by time modified
When you’re working with pentesting at an accelerated pace, you have to know what happened when within that particular timeframe.
The time modified sort flag allows for a quick look at what files have been modified and ordered from most recent downward through the file listing.
When you combine it with the long format of the ls command (-lt), Not only will you see the last modified files, but you’ll also be able to view their full attributes in great detail.
This is an essential skill if you want to keep track of what is being created by your script as well as any associated output created by background processes.
If you’ve previously identified that an administrator may be actively addressing your intrusion, the long listing (ls -lt) command is useful in determining which logs and configuration files are currently being changed by the administrator or anyone else.
Using this knowledge regarding sorting files by time allows for efficient clean-up. When listing files by time, it’s easy to find and remove files that were uploaded during final phases of your engagement, such as temporary tools or payloads.
Benefits of ls command in kali linux: ls –color kali terminal
The terminal in Kali Linux employs colour codes to identify files, directories, executables, and symbolic links.
The use of the "--color" flag (which is normally set to “on” by default) is responsible for these colour codes.
By knowing what the colours signify, you’ll be able to quickly scan 500 files in a directory to locate the one script file (executable) that you’re looking for (in Kali directories, they are generally blue and executables, bright green).
If you are using a remote shell that has colour support turned off, being aware of the command "ls --color=always" will prove to be an important asset.
It enables you to restore your visual reference guides, thereby reducing your cognitive load.
The ability to use colours visually when using the Kali terminal reduces the chances of making errors such as trying to use "cd" to change directories or using "cat" to display the contents of a directory.
Understanding the colour coding system of the Kali terminal will allow for increased efficiency and accuracy as a user of the terminal.
ls directory navigation kali
A partner for the "cd" command (changing directories), the "ls" command is an extremely important command in navigating via the terminal.
You learn to acquire the ability to “look before you leap” when you execute "ls" so that you know what is in the directory before you go into it.
This saves you time and frustration if you accidentally go into a wrong path or lose yourself within the file structure.
"ls -d */" is a command that only lists the directories within the current path.
It helps you keep your display clean, especially in a case where there are many files in a directory and the view becomes cluttered.
"ls .." will allow you to see everything that is in the parent directory from your current working directory.
This style of navigation is what separates the novices from the experts.
ls command pentesting examples
When conducting penetration testing in a real-world scenario, there are certain combinations of the 'ls' command that should be used consistently.
ls -al /tmp is a common command that is executed as soon as a pen tester has gained access to a shell, as /tmp is commonly writable by all users and is typically used to upload exploits.
Another very important use for the 'ls' command is to perform ls -laR /var/www/html in order to ascertain the web root of a target system; if 'ls -laR /var/www/html' is executed, many times it will reveal backup files of php scripts (e.g., .php.bak), or .git directories that may allow an attacker to disclose the complete source code of the web application.
The command that can be used to identify suid binaries (a frequently used path for privilege escalation) is 'ls -l /usr/bin | grep "rws"'; this command will display files that are executed with root privileges and could potentially be used to escalate privileges.
Understanding 'ls -i' provides the inode number for a file.
Knowing the inode number of a file is critical, especially when dealing with files that have unprintable characters as part of their name or are difficult to delete or move using standard file names.
What Are the Benefits of ls Command in Kali Linux? Your Questions Answered
1. What is the most common use of ls command in kali linux?
The most common use is simply listing the files and subdirectories in the current working directory to navigate the filesystem effectively.
2. How do I see hidden files with the ls command in kali linux?
You must use the -a or -all flag, as in ls -a, to see files starting with a dot.
3. Can the ls command in kali linux show file permissions?
Yes, using the -l (long listing) flag displays the read, write, and execute permissions for the owner, group, and others.
4. How do I sort files by size using the ls command in kali linux?
You can use the -S flag. Typing ls -lS will list the largest files at the top of the output.
5. What does ls -la do in the ls command in kali linux?
It combines the long listing format (-l) with the display of hidden files (-a), giving a complete view of all directory contents.
6. How can I list directories recursively with the ls command in kali linux?
Use the -R flag. This will list the contents of the current directory and every subdirectory beneath it.
7. How do I make file sizes readable in the ls command in kali linux?
Add the -h flag. Using ls -lh shows sizes in Kilobytes (K), Megabytes (M), or Gigabytes (G) instead of raw bytes.
8. Is there a way to color-code output in the ls command in kali linux?
Yes, the --color flag enables color-coding, though this is usually set as an alias in the Kali .bashrc or .zshrc file.
9. How do I list only directories using the ls command in kali linux?
You can use ls -d */ to filter the list and only show directory names without individual files.
10. Can I see the inode number with the ls command in kali linux?
Yes, use the -i flag. This is helpful for advanced filesystem troubleshooting or when dealing with corrupt files.
11. How do I sort files by the last modified time in the ls command in kali linux?
The -t flag sorts by time, placing the most recently modified files at the top of the list.
12. What does the -F flag do in the ls command in kali linux?
It appends a character to each entry to indicate its type, such as / for directories and * for executable files.
13. How do I list files in a single column with the ls command in kali linux?
Use the -1 (number one) flag. This is useful for piping file names into other terminal commands or scripts.
14. Can I list specific directories without moving into them using the ls command in kali linux?
Yes, simply provide the path after the command, like ls /home/kali/Downloads.
15. How do I reverse the sorting order in the ls command in kali linux?
Add the -r flag. For example, ls -tr sorts by time but puts the oldest files at the top.
16. What is the difference between ls and dir in Kali Linux?
While dir exists, ls is the native Linux command with more powerful formatting and color options tailored for Unix systems.
17. How do I see the UID and GID numbers in the ls command in kali linux?
Use the -n flag. This shows the numeric User ID and Group ID instead of the text-based names.
18. Can the ls command in kali linux show subdirectories only one level deep?
The ls command doesn’t have a “depth” flag, but you can achieve this by combining it with the find command or using ls */.
19. Why are some files highlighted in red in the ls command in kali linux?
Red highlighting typically indicates compressed files (like .zip or .tar.gz) or broken symbolic links, depending on your theme.
20. How do I list files separated by commas with the ls command in kali linux?
Use the -m flag. This is very helpful when you need to quickly create a list for documentation or configuration files.
Mastering the ls command in kali linux is the difference between a clumsy script-kiddie and a methodical professional ethical hacker. You now have the skills to uncover hidden threats, audit system permissions, and navigate complex target filesystems with absolute confidence.
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