how do i suppress seds unnessary output while using option -e?

Question

why n option is not working here

   [root@testgfs2 final]# echo a b c | sed -ne 's/[[:blank:]]/"/gp' -ne 's/^/"/pg' -ne 's/$/"/pg'
    a"b"c
    "a"b"c
    "a"b"c"

i just need :

"a"b"c"

actually i want sed to do somehting like :

echo a b c d | sed ...

output:

'a' 'b' 'c' 'd'

Answer 1

The problem is you are using p as a modifier which prints the "pattern space", i.e. result. To fix your example just do:

echo a b c | sed -e 's/[[:blank:]]/"/g' -e 's/^/"/g' -e 's/$/"/g

You may also consider using something like:

echo a b c | sed -e 's/\(\w*\)/"\1"/g'

instead.