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
来源：https://stackoverflow.com/questions/13337953/how-to-automatically-remove-the-file-extension-in-a-file-name