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Full Discussion: count and number instances of a character in sed or awk
Top Forums Shell Programming and Scripting count and number instances of a character in sed or awk Post 302574986 by agama on Saturday 19th of November 2011 12:09:55 PM
Old 11-19-2011
A small awk script to preprocess your input:

Code:
awk '
    /=/ {
        for( i = 1; i <= NF; i++ )
        {
            if( substr( $(i), 1, 1 ) == "=" )
                $(i) = "__________[" count++ "]";    # corrected
        }
    }
    { print; }
' text-file

Using your original message, I put in some equals
Code:
I currently use LaTeX together with a sed script to
set cloze =test papers for my students. I currently pepend
=and equals sign to the front of the words I want to leave out
in the finished =test, =perpendicular, for example. I am
able to number the =blanks using a variable in LaTeX. I
would like to switch from using =LatTeX to using =groff typesetting.

and this is the output:
Code:
I currently use LaTeX together with a sed script to 
set cloze __________[0] papers for my students. I currently pepend 
__________[1] equals sign to the front of the words I want to leave out 
in the finished __________[2] __________[3] for example. I am 
able to number the __________[4] using a variable in LaTeX. I 
would like to switch from using __________[5] to using __________[6] typesetting.

Hope this gets you going. (I'm not a *roff heavy, so it might be possible to do at formatting time, I just am not sure.)

---------- Post updated at 12:09 ---------- Previous update was at 12:08 ----------

If you'd like numbering to start with 1, change count++ to ++count.
Last edited by agama; 11-19-2011 at 09:07 PM.. Reason: correction
This User Gave Thanks to agama For This Post:
maouinin
 

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LEARN ABOUT CENTOS

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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