Variables into SED or AWK and multiple commands Post: 302609389

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Top Forums Shell Programming and Scripting Variables into SED or AWK and multiple commands Post 302609389 by agama on Monday 19th of March 2012 08:15:04 PM

03-19-2012

Registered User

I guessed a bit, and this code isn't complete, so it should get you started:

Code:

#!/usr/bin/env ksh
# the previous line can be replaced with #!/usr/bin/env bash 
# if you prefer to use bash

printf "enter filename: "
read filename
printf "do you want to enter data [yes|no] "
read ans
case $ans in
    y*|Y*)
            printf "enter search data: "
            read data                       # your description didnt indicate what to do with data
            ;;
    n*|N*)
            ;;              # just continue

    *)      printf "invalid reply; expected Y(es) or N(o)\n"
            exit 1
            ;;
esac

#
#  couldn't tell if this needed to be executed only if user entered no, or in all cases
#
date=$( date +%Y%m%d$H%M%S )                # date for the filename in a variable should it need to be used again
newfilename="testfile.$date"                # complete filename
sed ..... <$filename >$newfilename          # incomplete command, not sure what you need the sed to do
sleep 3
sed   -e '/./{H;$!d;}' -e "x;/$data/d" <$netfilename >not-sure-what-file-for-here

You didn't indicate what to do with the data entered if the user answered 'yes' to the second prompt. I also wasn't sure if a no response was the only time the sed commands were to be executed, or if no was just to avoid entering the data and the sed commands would always be executed.

Last edited by agama; 03-19-2012 at 09:16 PM.. Reason: #! alternate

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LEARN ABOUT DEBIAN

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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