Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!vsi1!wyse!bob
From: bob@wyse.wyse.com (Bob McGowen x4312 dept208)
Newsgroups: comp.unix.shell
Subject: Re: Awk question
Message-ID: <3094@wyse.wyse.com>
Date: 19 Jan 91 17:41:58 GMT
References: <1991Jan18.164243.11804@cbnewsh.att.com>
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Reply-To: bob@wyse.UUCP (Bob McGowen x4312 dept208)
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In article <1991Jan18.164243.11804@cbnewsh.att.com> me@cbnewsh.att.com (william.j.bruncati) writes:
>I am having a problem with an awk program.
>What I'm trying to do is have an array element
>match on a pattern in the first field. 
>I can match on the fixed string
>but not the pattern. Can anyone help?
>
>This works.
>		if (myarray[i] == $1 )
>			print $0
>
>This doesn't work. It won't give me a match although there is one.
>		if (myarray[i] ~ /$1/ )
>			print $0

  I believe this is because you are using "old" awk, which did not
  allow substitution into patterns, as with your "/$1/".  Check to
  see if you have executables named "oawk" and "nawk".  If so, "oawk"
  will most likely be linked to "awk", so you will want to change
  the command to "nawk".

>Also, while I'm posting, could someone tell me if it's possible
>to have  nested case statements in shell?

  Yes, assuming you use sh.I do not know about csh.  I have on occasion
  used the following to step through all arguments looking for options
  and then checking the options to see if they are legal ones:

     for arg in $*  # assume no args will have white space
     do
	case $arg in
	-*)	# this is an option
	   case $arg in
	   -h)
	   ;;
	   -p)
	   ;;
	   -x)
	   ;;
	   -*)
	   ;;
	   esac
	*)	# this is not an option
	   item="$item $arg"
	esac
    done
>					Thanks in advance,
>						Bill Bruncati

I hope this is useful.

Bob McGowan  (standard disclaimer, these are my own ...)
Product Support, Wyse Technology, San Jose, CA
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