On 13 March 2010 00:54, erik quanstrom <quans...@quanstro.net> wrote: >> what is going to be in $1, $2... Is ghi the contents of $2 or not? > > this is easy to test: > > ; echo abcdefghi | sed 's/(abc(def)*)(ghi)/\1/' > abcdef > ; echo abcdefghi | sed 's/(abc(def)*)(ghi)/\2/' > def > ; echo abcdefghi | sed 's/(abc(def)*)(ghi)/\3/' > ghi > > - erik >
Ok, thats fine. But ;9 echo abcdefdffghi | 9 sed 's/(abc(d?f)*)(ghi)/\1/' abcdefdffghi ;9 echo abcdefdffghi | 9 sed 's/(abc(d?f)*)(ghi)/\2/' abcdefdffghi ;9 echo abcdefdffghi | 9 sed 's/(abc(d?f)*)(ghi)/\3/' abcdefdffghi ;9 echo abcdefdffghi | 9 sed 's/(abc(d?f)*)(ghi)/\4/' abcdefdffghi ;9 echo abcdefdffghi | 9 sed 's/(abc(d?f)*)(ghi)/\5/' abcdefdffghi ;9 echo abcdefdffghi | 9 sed 's/(abc(d?f)*)(ghi)/\6/' abcdefdffghi this I don't understand... maybe it's too late for me... Thanks Ruda
