Remove Extensions from Filename

Remove file extension from a file name string

I used the below, less code

string fileName = "C:\file.docx";
MessageBox.Show(Path.Combine(Path.GetDirectoryName(fileName),Path.GetFileNameWithoutExtension(fileName)));

Output will be

C:\file

Extract filename and extension in Bash

First, get file name without the path:

filename=$(basename -- "$fullfile")
extension="${filename##*.}"
filename="${filename%.*}"

Alternatively, you can focus on the last '/' of the path instead of the '.' which should work even if you have unpredictable file extensions:

filename="${fullfile##*/}"

You may want to check the documentation :

• On the web at section "3.5.3 Shell Parameter Expansion"
• In the bash manpage at section called "Parameter Expansion"

How to trim a file extension from a String in JavaScript?

If you know the length of the extension, you can use x.slice(0, -4) (where 4 is the three characters of the extension and the dot).

If you don't know the length @John Hartsock regex would be the right approach.

If you'd rather not use regular expressions, you can try this (less performant):

filename.split('.').slice(0, -1).join('.')

Note that it will fail on files without extension.

How can I remove the extension of a filename in a shell script?

You should be using the command substitution syntax $(command) when you want to execute a command in script/command.

So your line would be

name=$(echo "$filename" | cut -f 1 -d '.')

Code explanation:

1. echo get the value of the variable $filename and send it to standard output
2. We then grab the output and pipe it to the cut command
3. The cut will use the . as delimiter (also known as separator) for cutting the string into segments and by -f we select which segment we want to have in output
4. Then the $() command substitution will get the output and return its value
5. The returned value will be assigned to the variable named name

Note that this gives the portion of the variable up to the first period .:

$ filename=hello.world
$ echo "$filename" | cut -f 1 -d '.'
hello
$ filename=hello.hello.hello
$ echo "$filename" | cut -f 1 -d '.'
hello
$ filename=hello
$ echo "$filename" | cut -f 1 -d '.'
hello

How can I replace (or strip) an extension from a filename in Python?

Try os.path.splitext it should do what you want.

import os
print os.path.splitext('/home/user/somefile.txt')[0]+'.jpg'  # /home/user/somefile.jpg

os.path.splitext('/home/user/somefile.txt')  # returns ('/home/user/somefile', '.txt')

Remove file name extension

Use this:

String test =  "myfile.jpg.des";
test = test.substring(0, test.lastIndexOf("."));

Remove extensions from filename

try this one out:

UPDATE TableName
SET FileName = REVERSE(SUBSTRING(REVERSE(FileName), 
                       CHARINDEX('.', REVERSE(FileName)) + 1, LEN(FileName))

View For a DEMO @ SQLFiddle.com

How to automatically remove the file extension in a file name

 f=file.zip
 echo "${f%.zip}"

 file

The '%' is a parameter modifier, it means, delete from the right side of the value of the variable whatever is after the '%' char, in this case, the string .zip. You can make this more general to remove any trailing extension, by using a wild card like

 echo "${f%.*}"

 file

How to remove extension from string (only real extension!)

Try this one:

$withoutExt = preg_replace('/\\.[^.\\s]{3,4}$/', '', $filename);

So, this matches a dot followed by three or four characters which are not a dot or a space. The "3 or 4" rule should probably be relaxed, since there are plenty of file extensions which are shorter or longer.

C# Remove file extension from string list

The Substring method returns a new fresh copy of the string, copied from the source one. If you want to "cut the extension off", then you must fetch what Substring returns and store it somewhere, i.e.:

int i = list1[n].LastIndexOf(".");
if (i > 0)
    list1[n] = list1[n].Substring(0, i);

However, this is quite odd way to remove an extension.

Firstly, use of Substring(0,idx) is odd, as there's a Remove(idx)(link) which does exactly that:

int i = list1[n].LastIndexOf(".");
if (i > 0)
    list1[n] = list1[n].Remove(i);

But, sencondly, there's even better way of doing it: the System.IO.Path class provides you with a set of well written static methods that, for example, remove the extension (edit: this is what L-Three suggested in comments), with full handling of dots and etc:

var str = System.IO.Path.GetFileNameWithoutExtension("myfile.txt"); // == "myfile"

See MSDN link

It still returns a copy and you still have to store the result somewhere!

list1[n] = Path.GetFileNameWithoutExtension( list1[n] );

---

Related Topics