Clear all files linux

Linux Delete All Files In Directory Using Command Line

Linux Delete All Files In Directory

The procedure to remove all files from a directory:

1. Open the terminal application
2. To delete everything in a directory run: rm /path/to/dir/*
3. To remove all sub-directories and files: rm -r /path/to/dir/*

Let us see some examples of rm command to delete all files in a directory when using Linux operating systems.

How to remove all the files in a directory?

Suppose you have a directory called /home/vivek/data/. To list files type the ls command:
$ ls

Understanding rm command option that deleted all files in a directory

• -r : Remove directories and their contents recursively.
• -f : Force option. In other words, ignore nonexistent files and arguments, never prompt. Dangerous option. Be careful.
• -v : Verbose option. Show what rm is doing on screen.

Deleting hidden vs non-hidden files

In Linux, any file or directory that starts with a dot character called a dot file. It is to be treated as hidden file. To see hidden files pass the -a to the ls command:
ls
ls -a
ls -la
To remove all files except hidden files in a directory use:
rm /path/to/dir/*
rm -rf /path/to/dir/*
rm *
In this example, delete all files including hidden files, run:
rm -rf /path/to/dir1/<*,.*>
rm -rfv /path/to/dir1/

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Bash remove all files from a directory including hidden files using the dotglob option

If the dotglob option set, bash includes filenames beginning with a ‘.’ in the results of pathname expansion. In other words, turn on this option to delete hidden files:

See GNU/bash man page for the shopt command online here:
man bash
help shopt

Linux Remove All Files In Directory

As I said earlier one can use the unlink command too. The syntax is:
unlink filename
For example, delete file named foo.txt in the current working directory, enter:
unlink foo.txt
It can only delete a single file at a time. You can not pass multiple files or use wildcards such as *. Therefore, I strongly recommend you use the rm command as discussed above.

Conclusion

In this quick tutorial, you learned how to remove or delete all the files in a directory using the rm command. Linux offers a few more options to find and delete files. Please see the following tutorials:

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Linux / UNIX: How To Empty Directory

How To Empty Directory In Linux and Unix

1. rm command – Delete one or more files or directories.
2. find command – Find and delete all files from a specific directory.

Linux Empty Directory Using the rm Command

First, consider the following directory structure displayed using the tree command

To delete all files from /tmp/foo/ directory (i.e. empty /tmp/foo/ directory), enter:
$ cd /tmp/foo/
$ rm *
OR
$ rm /tmp/foo/*

Delete All Files Using the Find Command

Consider the following directory structure:

To delete all files from /tmp/bar/ directory (including all files from sub-directories such as /tmp/bar/dir1), enter:
$ cd /tmp/bar/
$ find . -type f -delete
OR
$ find /tmp/bar/ -type f -delete
The above find command will delete all files from /tmp/bar/ directory. It will not delete any sub-directories. To remove both files and directories, try:
find /path/to/target/dir/ -delete
The find commands options are as follows:

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• -type f : Delete on files only.
• -type d : Remove folders only.
• -delete : Delete all files from given directory name.

How to remove a full directory and all files in Linux

To remove a directory that contains other files or sub-directories, use the following rm command command. In the example, I am going to empty directory named “docs” using the rm -rf command as follows:
rm -rf /tmp/docs/*
Get verbose outputs:
rm -rfv /tmp/docs/*

The rm command options are as follows:

• -r : Delete directories and their contents recursively on Linux or Unix-like systems.
• -f : Forceful removal. In other words, ignore nonexistent files and delete whatever found.
• -v : Verbose outputs. For example, explain what is being done on screen.

Conclusion

You learned how to use the rm and find command to delete all files and sub-directories on Linux/macOS/*BSD and Unix-like systems. In other words, this is useful to empty folders on Linux. For more information see rm command help page here.

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5 Ways to Empty or Delete a Large File Content in Linux

Occasionally, while dealing with files in Linux terminal, you may want to clear the content of a file without necessarily opening it using any Linux command line editors. How can this be achieved? In this article, we will go through several different ways of emptying file content with the help of some useful commands.

Caution: Before we proceed to looking at the various ways, note that because in Linux everything is a file, you must always make sure that the file(s) you are emptying are not important user or system files. Clearing the content of a critical system or configuration file could lead to a fatal application/system error or failure.

With that said, below are means of clearing file content from the command line.

Important: For the purpose of this article, we’ve used file access.log in the following examples.

1. Empty File Content by Redirecting to Null

A easiest way to empty or blank a file content using shell redirect null (non-existent object) to the file as below:

Empty Large File Using Null Redirect in Linux

2. Empty File Using ‘true’ Command Redirection

Here we will use a symbol : is a shell built-in command that is essence equivalent to the true command and it can be used as a no-op (no operation).

Another method is to redirect the output of : or true built-in command to the file like so:

Empty Large File Using Linux Commands

3. Empty File Using cat/cp/dd utilities with /dev/null

In Linux, the null device is basically utilized for discarding of unwanted output streams of a process, or else as a suitable empty file for input streams. This is normally done by redirection mechanism.

And the /dev/null device file is therefore a special file that writes-off (removes) any input sent to it or its output is same as that of an empty file.

Additionally, you can empty contents of a file by redirecting output of /dev/null to it (file) as input using cat command:

Empty File Using cat Command

Next, we will use cp command to blank a file content as shown.

Empty File Content Using cp Command

In the following command, if means the input file and of refers to the output file.

Empty File Content Using dd Command

4. Empty File Using echo Command

Here, you can use an echo command with an empty string and redirect it to the file as follows:

Empty File Using echo Command

Note: You should keep in mind that an empty string is not the same as null. A string is already an object much as it may be empty while null simply means non-existence of an object.

For this reason, when you redirect the out of the echo command above into the file, and view the file contents using the cat command, is prints an empty line (empty string).

To send a null output to the file, use the flag -n which tells echo to not output the trailing newline that leads to the empty line produced in the previous command.

Empty File Using Null Redirect

5. Empty File Using truncate Command

The truncate command helps to shrink or extend the size of a file to a defined size.

You can employ it with the -s option that specifies the file size. To empty a file content, use a size of 0 (zero) as in the next command:

Truncate File Content in Linux

That’s it for now, in this article we have covered multiple methods of clearing or emptying file content using simple command line utilities and shell redirection mechanism.

These are not probably the only available practical ways of doing this, so you can also tell us about any other methods not mentioned in this guide via the feedback section below.

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How to remove all files from a directory?

The closest I’ve gotten is

but that doesn’t work for files that don’t have an extension.

9 Answers 9

Linux does not use extensions. It is up to the creator of the file to decide whether the name should have an extension. Linux looks at the first few bytes to figure out what kind of file it is dealing with.

To remove all non-hidden files* in a directory use:

However, this will show an error for each sub-directory, because in this mode it is only allowed to delete files.

To remove all non-hidden files and sub-directories (along with all of their contents) in a directory use:

* Hidden files and directories are those whose names start with . (dot) character, e.g.: .hidden-file or .hidden-directory/ . Note that, in Bash, if the dotglob option (which is off by default) is set, rm will act on hidden files too, because they will be included when * is expanded by the shell to provide the list of filename arguments.

To remove a folder with all its contents (including all interior folders):

To remove all the contents of the folder (including all interior folders) but not the folder itself:

or, if you want to make sure that hidden files/directories are also removed:

To remove all the «files» from inside a folder(not removing interior folders):

Warning: if you have spaces in your path, make sure to always use quotes.

is equivalent to 2 separate rm -rf calls:

To avoid this issue, you can use ‘ single-quotes ‘ (prevents all expansions, even of shell variables) or » double-quotes » (allows expansion of shell variables, but prevents other expansions):

• rm — stands for remove
• -f — stands for force which is helpful when you don’t want to be asked/prompted if you want to remove an archive, for example.
• -r — stands for recursive which means that you want to go recursively down every folder and remove everything.

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Delete files older than 10 days using shell script in Unix [duplicate]

I’m new to shell scripts, can anyone help? I want to delete scripts in a folder from the current date back to 10 days. The scripts looks like:

The script will run in every 10 day with Crontab, that’s why I need the current date.

3 Answers 3

find is the common tool for this kind of task :

EXPLANATIONS

• ./my_dir your directory (replace with your own)
• -mtime +10 older than 10 days
• -type f only files
• -delete no surprise. Remove it to test your find filter before executing the whole command

And take care that ./my_dir exists to avoid bad surprises !

Just spicing up the shell script above to delete older files but with logging and calculation of elapsed time

The code adds a few things.

• log files named with a timestamp
• log folder specified
• find looks for *.txt files only in the log folder
• type f ensures you only deletes files
• maxdepth 1 ensures you dont enter subfolders
• log files older than 7 days are deleted ( assuming this is for a backup log)
• notes the start / end time
• calculates the elapsed time for the backup operation.

Note: to test the code, just use -print instead of -print -delete. But do check your path carefully though.

Note: Do ensure your server time is set correctly via date — setup timezone/ntp correctly . Additionally check file times with ‘stat filename’

Note: mtime can be replaced with mmin for better control as mtime discards all fractions (older than 2 days (+2 days) actually means 3 days ) when it deals with getting the timestamps of files in the context of days

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