Longest length of string in array Post: 302572246

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Top Forums Shell Programming and Scripting Longest length of string in array Post 302572246 by mmab on Wednesday 9th of November 2011 12:11:54 PM

11-09-2011

Registered User

Longest length of string in array

I would be grateful if someone could help me. I am trying to write a .sh script in UNIX.

I have the following code;

Code:

User[0]=john
User[1]=james
User[2]=ian
User[3]=martin
 
for x in ${User[@]}
do
  print ${#x}
done

This produces the following output;

Code:

What I would like to do is only print the longest length of string, in this case '6'. (I will also be storing the single result in a variable for later use). I have experimented with awk & gawk etc and I'm really struggling. The above code is a very simple breakdown of a more complicated problem, but if someone could solve the above it would make a big difference.

Appologies if this is very straight forward, quite new to this.
Regards

---------- Post updated at 05:11 PM ---------- Previous update was at 05:02 PM ----------

I should of added that i need to keep the for loop, hopefully there is a way of doing it within this kind of loop.

Last edited by Scott; 11-09-2011 at 01:23 PM.. Reason: Please use code tags

mmab

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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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