How to use cut or awk commands into sed command ?

Tino Engel elrap at web.de
Wed Dec 12 13:29:30 PST 2007


Halid Faith schrieb:
> I have a file named file1 which contains some values.
> I want to replace some strings into it, so I use sed command but I get an error.
>
> sed "s#oldstring#`cut -d, -f3 file2`#"  file1
>
> sed: 1: "s/yenidomain2/f0b2875d- ...": unterminated substitute in regular expression
>
> also I get an error with awk command into sed;
> sed "s#oldstring#`awk -F, '{print$3}' file2`#"    file1
> sed: 1: "s#yenidomain2#f0b2875d- ...": unterminated substitute in regular expression
>   
Sure you know what you are doing?
You are giving probably various linefeeds to your substitution (assuming 
file2 has more than one line).
E.G. 'awk <...> file2' produces as many lines as there are in file2. But 
the substitution in sed has to be a string-like expression with no line 
feeds.

There for the "unterminated substitution" error.

Rg, Tino


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