How to automatically remove the file extension in

问题:

I am trying to make a script in bash that requires the removal of the the file extension from a file name, like the following

original:   something.zip
removed version: something

And I was thinking I could use cut for this, but I am worried that a situation could arise where there might be a file name that has more than one period, etc, something similar to the following

something.v2.zip

having said that, I was wondering if anyone had any recommendations as to what I could do to just remove the last period and the text after it from a line of text/filename? any help would be appreciated, thanks!

回答1:

 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

IHTH

回答2:

If you want to remove the from the last period to the end, try this:

$ f=some.thing.zip
$ echo ${f%.*}
some.thing