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Full Discussion: IP Ping Sweep
Top Forums Shell Programming and Scripting IP Ping Sweep Post 302902914 by sudo on Thursday 22nd of May 2014 07:49:38 PM
Old 05-22-2014
Quote:
Originally Posted by Chubler_XL
Well you could always assign your variable from reply after calling the function.

Or here is a change that adds a 2nd parameter for the variable to store the result.

Code:
function get_three_quad
{
   REPLY=""
   while [ -z "$REPLY" ]
   do
      printf "$1"
      read     
      if ! echo "$REPLY" | grep -qE "^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.|$)){3}$"
      then
         echo "Illegal input"
         REPLY=""
      fi
    done
    [ $# -gt 1 ] && printf -v "$2" "%s" "$REPLY"
}

get_three_quad "
Enter first three quadrants of router address (must contain three periods)
Example- xx.xxx.xx. : " PT1ADD
echo "You entered: $PT1ADD"

ah! That was the missing piece to the puzzle. Thanks for your help.
 

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ECHO(1) 						    BSD General Commands Manual 						   ECHO(1)

NAME
echo -- write arguments to the standard output SYNOPSIS
echo [-n] [string ...] DESCRIPTION
The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline (' ') character, to the standard output. The following option is available: -n Do not print the trailing newline character. This may also be achieved by appending 'c' to the end of the string, as is done by iBCS2 compatible systems. Note that this option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. Applications aiming for maximum portability are strongly encouraged to use printf(1) to sup- press the newline character. Some shells may provide a builtin echo command which is similar or identical to this utility. Most notably, the builtin echo in sh(1) does not accept the -n option. Consult the builtin(1) manual page. EXIT STATUS
The echo utility exits 0 on success, and >0 if an error occurs. SEE ALSO
builtin(1), csh(1), printf(1), sh(1) STANDARDS
The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. BSD
April 12, 2003 BSD
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