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Re: Editing a piped in stream?

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On 7/10/2018 2:16 PM, mick crane wrote:
> On 2018-07-08 17:41, John Darrah wrote:
>> On 7/8/2018 7:00 AM, Richard Owlett wrote:
>>>
>>> Until this thread I didn't have concept of "stream editor", much less 
>>> the existence of "sed".
>>> I had heard of "AWK", but had an image of it being a regex parser.
>>>
>> Awk is easy to learn because it is a minimal language. It can do
>> anything sed can do and much more. I am always surprised that so many
>> people opt to build long commands with cut/sed instead of using awk.
>> FWIW, I use mawk because it is orders of magnitude faster than gawk.
>>
>> -- john
> 
> 
> I'd like to learn some awk having found it handy once.
> apt says mawk is installed
> 
> in /usr/bin I have
> lrwxrwxrwx  1 root root         21 Apr  2 22:29 awk -> 
> /etc/alternatives/awk
> -rwxr-xr-x  1 root root     658072 Jan 25 12:55 gawk
> -rwxr-xr-x  1 root root       3189 Jan 25 12:55 igawk
> -rwxr-xr-x  1 root root     121976 Mar 23  2012 mawk
> lrwxrwxrwx  1 root root         22 Apr  2 22:29 nawk -> 
> /etc/alternatives/nawk
> 
> "awk" returns options for gawk and "mawk does nothing ( back to prompt)
> 

At the end of those 'gawk' options:

"gawk is a pattern scanning and processing language.
By default it reads standard input and writes standard output."

$ printf "%s" "123 456 789" | awk '{print $2}'
456

-- 
John Doe

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Thread

Editing a piped in stream? Richard Owlett <rowlett@cloud85.net> - 2018-07-06 18:20 +0200
  Re: Editing a piped in stream? Michael Wagner <wagner_m_bremen@web.de> - 2018-07-06 18:50 +0200
    Re: Editing a piped in stream? Richard Owlett <rowlett@cloud85.net> - 2018-07-06 20:30 +0200
  Re: Editing a piped in stream? john doe <johndoe65534@mail.com> - 2018-07-06 19:10 +0200
  Re: Editing a piped in stream? David Christensen <dpchrist@holgerdanske.com> - 2018-07-07 04:10 +0200
    Re: Editing a piped in stream? John Crawley <john@bunsenlabs.org> - 2018-07-07 11:00 +0200
      Re: Editing a piped in stream? David Christensen <dpchrist@holgerdanske.com> - 2018-07-07 21:40 +0200
        Re: Editing a piped in stream? David Wright <deblis@lionunicorn.co.uk> - 2018-07-08 03:40 +0200
          Eureka;/ Re: Editing a piped in stream? Richard Owlett <rowlett@cloud85.net> - 2018-07-08 13:00 +0200
        Re: Editing a piped in stream? John Crawley <john@bunsenlabs.org> - 2018-07-08 03:40 +0200
          Re: Editing a piped in stream? john doe <johndoe65534@mail.com> - 2018-07-08 07:40 +0200
            Re: Editing a piped in stream? Andy Smith <andy@strugglers.net> - 2018-07-08 13:20 +0200
              Re: Editing a piped in stream? Richard Owlett <rowlett@cloud85.net> - 2018-07-08 15:20 +0200
                Re: Editing a piped in stream? Richard Owlett <rowlett@cloud85.net> - 2018-07-08 16:00 +0200
                Re: Editing a piped in stream? John Darrah <xyllyx@gmail.com> - 2018-07-08 18:50 +0200
                Re: Editing a piped in stream? mick crane <mick.crane@gmail.com> - 2018-07-10 14:20 +0200
                Re: Editing a piped in stream? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-07-10 14:40 +0200
                Re: Editing a piped in stream? mick crane <mick.crane@gmail.com> - 2018-07-10 15:00 +0200
                Re: Editing a piped in stream? john doe <johndoe65534@mail.com> - 2018-07-10 15:30 +0200
              Re: Editing a piped in stream? mick crane <mick.crane@gmail.com> - 2018-07-10 14:50 +0200
            Re: Editing a piped in stream? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-07-09 14:50 +0200
              Re: Nvidia drivers Matthew Crews <mattcrews@mattcrews.com> - 2018-07-09 15:20 +0200
                Re: Nvidia drivers Matthew Crews <mattcrews@mattcrews.com> - 2018-07-09 20:40 +0200
                Re: Nvidia drivers Boyan Penkov <boyan.penkov@gmail.com> - 2018-07-09 20:50 +0200

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