How to use sed to extract the text

I have a text file look like this:

/home1/users/usr1/bill.txt
/home1/users/usr2/bom.txt
/tmp/cost.txt

All filename extension ended with txt.

I need to output the as follow:

/home1/users/usr1
/home1/users/usr2
/tmp

Any idea? Please help.

Hi:

IMO, sed is not the best solution for this problem. Most unix variants supply the dirname command:

#!/bin/ksh

while read str
do
dirname $str
done xfile
# need a less than sign between done
# and xfile. This forum wipes it out

You can also use the korn shell pattern matching operator to perform the same function:

while read str
do
echo ${str%/*}
done xfile
# need a less than sign between done #and xfile. This forum wipes it out

Regards,

Nails

sed 's#/[a-z]*.txt##' your_file

-jim

Yes! I gotit! But how can it write it into a file in the while loop?

Thanks Nails

Hi:

Here's three ways:

1) Redirect all of standard output to a file. If the script is called a.ss:

a.ss > output.file

2) Within the script, use file handles 1 and 2 to send all the output to a file:

exec 1>output.file 2>&1

3) Withing the while loop, send the output to a file:

while read str
do
echo ${str%/*}
done xfile > output.file
# need a less than sign between done
#and xfile. This forum wipes it out

Regards,

Nails

Try this sed command. It should do the trick

sed 's:/[a-z]*.txt:/:g' infile > outfile