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Full Discussion: Indexing Variable Names
Top Forums Shell Programming and Scripting Indexing Variable Names Post 302918720 by pilnet101 on Thursday 25th of September 2014 07:25:32 AM
Old 09-25-2014
Is it sort of something like this you are after? Or have I got the wrong end of the stick here:

Code:
awk 'NR==1{print "Line numbers containing variables reported below:"}
    {
    a=0
    for (i=1;i<=NF;i++) {
        if($i ~ /\${.+}/) {
            a=gsub(/[^_A-Z0-9]/,"",$i)
            v[$i]
            }
    }
if (a) {
     print NR
     }
}
END{
    print "\n\nUnique variables reported below:"
    for (x in v) {
        print x
        }
}' inputfile

 

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Tcl_StringMatch(3)					      Tcl Library Procedures						Tcl_StringMatch(3)

__________________________________________________________________________________________________________________________________________________

NAME
Tcl_StringMatch, Tcl_StringCaseMatch - test whether a string matches a pattern SYNOPSIS
#include <tcl.h> int Tcl_StringMatch(str, pattern) int Tcl_StringCaseMatch(str, pattern, flags) ARGUMENTS
const char *str (in) String to test. const char *pattern (in) Pattern to match against string. May contain special characters from the set *?[]. int flags (in) OR-ed combination of match flags, currently only TCL_MATCH_NOCASE. 0 specifies a case-sensitive search. _________________________________________________________________ DESCRIPTION
This utility procedure determines whether a string matches a given pattern. If it does, then Tcl_StringMatch returns 1. Otherwise Tcl_StringMatch returns 0. The algorithm used for matching is the same algorithm used in the string match Tcl command and is similar to the algorithm used by the C-shell for file name matching; see the Tcl manual entry for details. In Tcl_StringCaseMatch, the algorithm is the same, but you have the option to make the matching case-insensitive. If you choose this (by passing TCL_MATCH_NOCASE), then the string and pattern are essentially matched in the lower case. KEYWORDS
match, pattern, string Tcl 8.5 Tcl_StringMatch(3)
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