Stripping out extension in file name - Shell Programming and Scripting

devs · #1 (**permalink**) 02-24-2007

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.

ahmedwaseem2000 · #2 (**permalink**) 02-24-2007

try this:

Code:

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

or

Code:

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

or sed solution

Code:

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

or

Code:

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

radoulov · #3 (**permalink**) 02-25-2007

If filename does not contain period(s):

Code:

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

Otherwise:

Code:

${fname%.*.*}

devs · #4 (**permalink**) 02-25-2007

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.

ahmedwaseem2000 · #5 (**permalink**) 02-25-2007

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.

Code:

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

sb008 · #6 (**permalink**) 02-25-2007

Quote:

Originally Posted by ahmedwaseem2000

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.

Code:

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

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

devs · #7 (**permalink**) 02-26-2007

thank you all.. it was helpful

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