Function prototype declaration Post: 302866491

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Top Forums Shell Programming and Scripting Function prototype declaration Post 302866491 by Akshay Hegde on Tuesday 22nd of October 2013 05:36:52 AM

10-22-2013

Moderator

Quote:

Originally Posted by Balasankar

Hi All,

I have the script as below

Code:

#!bin/bash
let k=9
if [ $k -eq 9 ]
then
echo "Start"
Hello
echo "End"
else
echo "failed"
fi
function Hello() {
echo "hello !!!!"
}

I got the below error :
Start
Testtt.sh: line 6: Hello: command not found
End

Could any one help me how can I define the function after the main process. If I put the function definition before the main process it would work but I need the program structure as it is. If you could help to delcare any prototype to intimate the shell the I am going to use the function in later part of the program (as we declare prototype in C++).

Thanks in advance!!!

Function should be defined before calling. as you might aware commands are executed sequentially.

modify like this

Code:

#!bin/bash

function Hello(){
        echo "hello "
            }

let k=9
if [ $k -eq 9 ]
then
    echo "Start"
    Hello
    echo "End"
else
    echo "failed"
fi

Akshay Hegde

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LEARN ABOUT SUNOS

echo

echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME

       echo - echo arguments to standard output

SYNOPSIS

       /usr/ucb/echo [-n] [argument]

DESCRIPTION

       echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output.

       echo  is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi-
       ronment variables.

       For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows:

	 o  echo your current-working-directory's full pathname

	 o  pipe the output through tr to translate the path's embedded slash-characters into space-characters

	 o  pipe that output through wc -w for a count of the names in your path.

	      example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w"

       See tr(1) and wc(1) for their functionality.

       The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be  invoked	if
       the  user  calls  echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape
       characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the  black-slashed  escape  characters,	and  ksh's
       echo() also understands a as the audible bell character; however, these commands do not have an -n option.

OPTIONS

       -n	Do not add the NEWLINE to the output.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), echo(1), ksh(1), sh(1), tr(1),  wc(1), attributes(5)

NOTES

       The -n option is a transition aid for BSD applications, and may not be supported in future  releases.

SunOS 5.10							    3 Aug 1994								  echo(1B)