awk help to mask characters Post: 303025478

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Top Forums Shell Programming and Scripting awk help to mask characters Post 303025478 by RudiC on Saturday 3rd of November 2018 06:30:44 AM

11-03-2018

Registered User

This might work:

Code:

echo 'His phone number is (123) 456-7890 and account is 34567 887272. ' | awk '
        {while (match ($0, /[0-9()-]+ *[0-9()-]*/))     {X = substr ($0, RSTART, RLENGTH-4)
                                                         gsub (/[0-9]/, "*", X)
                                                         printf "%s%s%s", substr ($0, 1, RSTART-1), X, substr ($0, RSTART + RLENGTH - 4, 4)
                                                         $0 = substr ($0, RSTART + RLENGTH)
                                                        }
         print
        }
'
His phone number is (***) ***-7890 and account is ***** **7272.

The regex needs to be quite cumbersome as my mawk doesn't allow for back references. It will fail, too, if there are non-digits in the last four places.

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LEARN ABOUT LINUX

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)

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