Concate a string in awk Post: 302752007

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Top Forums Shell Programming and Scripting Concate a string in awk Post 302752007 by RudiC on Saturday 5th of January 2013 08:37:48 AM

01-05-2013

Registered User

I presume you are using bash or similar. bash seems to make a difference between assigning a list of space separated strings to an array variable and assigning the result of a command substitution of same format. Me too, I could not get it to work, other than using the workaround

Code:

var=( $(awk '
             NR==1 { name=$1} 
             NR==3 { dat=$4 "_" $1 "_" $3 "_" $2 "_" $6}
             NR==4 { leng=$1}
             NR==5 { progress=int($1) }
             END{print name, dat, leng, progress};
            ' file ) )
echo ${var[1]}
13:55:17_Sat_5_Jan_2013

BTW - the error is originating from you using the reserved word length (function in awk)

After a lot of fiddling around - try this one:

Code:

$ eval var=( $(awk '
              NR==1 { name=$1} 
              NR==3 { dat=$4 " " $1 " " $3 " " $2 " " $6}
              NR==4 { leng=$1}
              NR==5 { progress=int($1) }
              END {print "\""name"\" \"" dat"\" \""leng"\" \""progress"\""};
             ' file ) )
$ echo ${var[1]}
13:55:17 Sat 5 Jan 2013

Last edited by RudiC; 01-05-2013 at 09:56 AM.. Reason: Solution with eval...

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LEARN ABOUT SUSE

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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