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Full Discussion: Function to add escape character before specified character
Top Forums Shell Programming and Scripting Function to add escape character before specified character Post 302881593 by Yoda on Monday 30th of December 2013 12:05:29 PM
Old 12-30-2013
Another approach:
Code:
SPECIAL_CHARS='& ;'
ESCAPE_CHAR='\'
echo 'abcd fkaj&dsdsd' | awk -v SC="$SPECIAL_CHARS" -v EC="$ESCAPE_CHAR" '
        BEGIN {
                n = split ( SC, A )
        }
        {
                for ( i = 1; i <= n; i++ )
                        gsub ( A[i], EC "\\&", $0 )
                print
        }
'

This User Gave Thanks to Yoda For This Post:
Anupam_Halder
 

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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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