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Full Discussion: awk new line issue, saying string can't contain new line character
Top Forums Shell Programming and Scripting awk new line issue, saying string can't contain new line character Post 302693927 by mady135 on Thursday 30th of August 2012 02:09:09 AM
Old 08-30-2012
Question awk new line issue, saying string can't contain new line character
Hi ,

I am doing some enhancements in an existing shell script. There it used the awk command in a function as below :
Code:
float_expr() {
IFS=" " command eval 'awk "
BEGIN {
result = $*
print result
exit(result == 0)
}"'
}

It calls the function float_expr to evaluate two values , calculated and returned from the program like below :
Code:
if float_expr "$Amount1 != $Amount2" > /dev/null; then
   echo "AMOUNTS ARE NOT EQUAL" >> $LOGGEN/${PGM}.log
   Stat=1
   allstat=1
fi

Amount1 is 9995890.9600 and Amount2 is 9995890.96. In a seperate call Amount1 and Amount2 are passesd as 12851 and 12851.

Now if I run the entire script where the values passed in the funtion via the variable it returns the error :
awk: The string cannot contain a newline character.
The source line is 3.
The error context is
result = eval awk " >>>
<<<
syntax error The source line is 4.
awk: The statement cannot be correctly parsed.
The source line is 4.



However, I ran the same funtion in a stand alone script by passing the two values as hardcoded and it ran fine.

I am not understanding, why this has been happening and need to know a sollution to it.
I need your help on this.
 

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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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