Sed usage question

Question

The last column of the log file shows the full path to a file and some entries CONTAIN spaces.  I want to use sed to substitute the space to an underscore, BUT I only wanna do it from a particular character to the end of the line.  How can I accomplish this?
Tue Aug 23 20:38:01 2011 /media/data/test file 1.txt
Wed Aug 24 11:30:01 2011 /media/data/test file 2.txt
Fri Aug 26 17:13:01 2011 /media/data/test file 3.txt
Sun Aug 28 17:16:02 2011 /media/data/test file 4.txt
The effect I'm after it convert the about to the following:
Tue Aug 23 20:38:01 2011 /media/data/test_file_1.txt
Wed Aug 24 11:30:01 2011 /media/data/test_file_2.txt
Fri Aug 26 17:13:01 2011 /media/data/test_file_3.txt
Sun Aug 28 17:16:02 2011 /media/data/test_file_4.txt
Tried:
sed '/\// s, ,_,' log
But of course, this will change the very first space to an underscore, not the space and all subsequent spaces AFTER the first forward slash.
Last edited by graysky (2011-11-13 23:32:12)

Answer 1

Remove White Space From Specific Columns In A Text File
How Can I Strip White Space From The Start And End Of Fields Using Awk
Edit: sorry, didn't see your last post before posting.
Last edited by /dev/zero (2011-11-13 23:46:48)