Re: sed "Hello, world!" program?

Sorry for intruding this thread  by my inattention.
Inside a script file the suggested command works as expected.

sedscript.txt:
s/.*/Hello, world!/
q

Command: sed -f sedscript.txt
Redirecting to file: sed -f sedscript.txt > testfile.txt
Am 24.02.2014 19:06, schrieb [email protected]:
> Zharif,
>
> ------------------
>
> s/.*/Hello, world!/
> q
> ------------------
> shows sed script in a file, called with sed -f option, as Tim pointed 
> out. The script can go on the command line, in the ways that you 
> listed. Anyway, the command line script doesn't work well for 
> the special "Hello, world!" example, mainly because C shell interprets 
> the exclamation character on the command line, as Rakesh pointed out.
>
> /////////////////
>
> Related to sed ...<<<"hello world" proposal from Thierry - I think 
> inconsistencies between different environments will occur, so it will 
> not work. For example, just trying a few (not even looking at cmd.exe):
>
> ---------------------------------
> bash$ sed "" <<< "Hello, world!"
> -bash: !": event not found
> bash$ sed "" <<< 'Hello, world!'
> He llo, world!
> csh%  sed "" <<< 'Hello, world!'
> Missing name for redirect.
> ---------------------------------
>
> Even if sed ...<<<"hello world" worked perfectly everywhere, I don't 
> think it would be a good "Hello, world!" example. It says nothing 
> about sed, is really a statement about the shell, since you could 
> substitute cat
> for sed and have the same effect. A good "Hello, world!" example has 
> to show something about the language.
>
> Any more thoughts? If I don't hear back in a week or so, I will try 
> putting into the wikipedia list:
>
> ------------------------------
>
>
> # convert input text stream to "Hello, world!"
> s/.*/Hello, world!/
> q
> ------------------------------Daniel
>
>
>
>