Stripping out extension in file name

Shell Programming and Scripting
1

This command gives me just the filename without any extension:
evrvar =`echo filename.tar | sed 's/\.[^.]*$//'`

I am trying to make a change to this command... to make it work for... filename.tar.gz to get just the filename....

currently the command gives me filename.tar by removing only gz... I am new to regular expression... pls help.

Thx.

2

try this:

echo filename.tar.gz |awk -F. '{ print $1 }'

or

echo filename.tar.gz |cut -d'.' -f1

or sed solution

echo "filename.tar.gz" | sed 's/\(.*\)\.\(.*\)\.\(.*\)/\1/g'

or

echo "filename.tar.gz" | sed 's/.......$//g'
1 Like
3

If filename does not contain period(s):

$ fname="filename.tar.gz"
$ echo "${fname%%.*}"
filename

Otherwise:

${fname%.*.*}
4

Thanks for the replies.

can this regular expression be made possible to use for both filename.gz & filename.tar.gz

I want to get filename for both of these commands as just filename only:
echo "filename.tar.gz" | sed 's/\(.*\)\.\(.*\)\.\(.\)/\1/g'
echo "filename.gz" | sed 's/\(.*\)\.\(.*\)\.\(.\)/\1/g'

thanx in advance.

5

You could use either the awk or the cut solutions they will work in all the scenarios. Here is the sed solution to generalize on both the occasions.

 echo "filename.tar" | sed "s/\([^.*]\)\.\(.*\)*$/\1/g"
6

echo "filename.tar" | sed "s/\..*$//"

7

thank you all.. it was helpful

8

We can even use basename to do this

# will strip out the extension
#+ the result here will be 'new'
basename new.gz '.gz'

9

How do I strip the extension when the delimiter might occur multiple times in the filename?

For example:
I have 2 files as input for my script.
test.extension
test.foo.extension

In my script I want to see "test" and "test.foo" as results.
But the following script-snippet gives "test" for both files.
I know this is caused by the -f1 that I use as setting for cut. But I want to know which command I should use so it starts looking for the delim-character from the right i.s.o the left (probably a different command than cut, but which?)

!/bin/sh

FILE_NAME=$1
if [ ! -r ${FILE_NAME} ]
then
  echo "Could not find file ${FILE_NAME}"
  exit 1
fi

FNAME=`echo "${FILE_NAME}"| cut -f1 -d'.'`

echo "FNAME = ${FNAME}"

TIA

10

Nemelis,

Don't hijack another poster's thread, but start your own thread if you have a question!

Thanks.