Truncate multiple file extensions

prvnrk · #1 (**permalink**) 08-24-2007

Hi,

I have files with names like file1.txt.txt.txt.txt and file2.txt.txt.txt.txt.txt............ (random infinite number of .txt exist).

how to truncate (mv) their names to ones with single .txt extension like file1.txt and file1.txt ? In other words, how to extract the filename upto first extension part?

Txs
Prvn

namishtiwari · #2 (**permalink**) 08-24-2007

Do something like this---

mv file1.txt.txt* file1.txt
mv file2.txt.txt* file2.txt

or

sed s/file1.txt.txt*/file1.txt

Thanks
Namish

summer_cherry · #3 (**permalink**) 08-24-2007

Hi try this one:

Code:

echo "number"
read num
who | nawk -v n=$num 'BEGIN{
str="file"
for (i=1;i<=n;i++)
str=sprintf("%s%s",str,".txt")
}
END{
print str
printf("%stxt\n",substr(str,1,index(str,".")))
}'

prvnrk · #4 (**permalink**) 08-24-2007

Txs namishtiwari,

But i have to do this for thousands of files in a directory so i cant use hardcoded filename. i will be using for loop for reading each file name. So, here how could i extract the "filename with first extension" out of "filename with infinite extensions"?

txs summer_cherry, here i dont know what is "number"..

namishtiwari · #5 (**permalink**) 08-24-2007

Quote:

Originally Posted by prvnrk

Txs namishtiwari,

But i have to do this for thousands of files in a directory so i cant use hardcoded filename. i will be using for loop for reading each file name. So, here how could i extract the "filename with first extension" out of "filename with infinite extensions"?

txs summer_cherry, here i dont know what is "number"..

Summer_cherry is just doing a echo of number,nothing to do with number that is not a variable.Whatever you do with echo that is excatly printed again.If you do not understand the code let me know i will tell you.

Thanks
Namish

prvnrk · #6 (**permalink**) 08-24-2007

Namish,

I know what " echo "number" " does and there's nothing hard to understand there. But his code expects again a "num".

I'm not sure if you read my post fully and again i repeat "how could i extract the "filename with first extension" out of "filename with infinite extensions"?" e.g., how to extract "file1.txt" from file1.txt.txt.txt..........? (no hardcoding of filenames with wild char pls..)

Regards,

Prvn

namishtiwari · #7 (**permalink**) 08-24-2007

suppose you enterd num as 5,then it will print a file that is having a extension of
file1.txt.txt.txt.txt.txt
and reduce it to
file1.txt

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