back reference error

Shell Programming and Scripting
1

Hi,

i am getting this error........

find ./ | sed '/\([a-z]\) \([a-z]\)/\2\1/'
Unrecognized command: /\([a-z]\) \([a-z]\)/\2\1/

Any idea???

regards
Apoorva Kumar

2

Yes, you aren't telling sed what command to execute! The regex is fine (haven't looked into the details), but sed needs to know what to do with the match if/when it finds it. i.e. If you want to just print the matching patterns, you still have to tell it to print them using the 'p' command.

3

thanks partner!!..I just missed to put a s there.

I have few file in my dir.....

abc 123
efg 567

I am trying this command.....

for file in `find ./|sed 's/^/\"/'|sed 's/$/\"/'`
do
echo $file
done

This is the output i am getting.........

"./"
"./.sh_history"
"./3rdPartytesting"
"./abc
123"
""
"./efg
456"
"./bkup"

The issue is there is an extra \n in the names of files which contains a space in them. Can you help me get a output like...

"./"
"./.sh_history"
"./3rdPartytesting"
"./abc 123"
""
"./efg 456"
"./bkup"

regards
Apoorva Kumar

4

Please any anwers??

regards
Apoorva Kumar

5

Pls don't bump-up posts if not answered immediately!

find . | sed 's/.*/"&"/'