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Full Discussion: Passing two variables to function
Top Forums Shell Programming and Scripting Passing two variables to function Post 302491461 by kshji on Thursday 27th of January 2011 01:42:00 PM
Old 01-27-2011
Code:
#!/usr/bin/ksh or bash or dash or ...
####
check()
{  
   # function args are just like command line args - you call function as command
   # return in function works same way as exit in script
   [ $# -lt 1 ] && echo "No arguments passed.Try again" >&2 && return 1

   for num in $@
   do
       other=${num//[0-9]/} # remove numbers = like tr -d "[0-9]"

       [ "$other" != "" ] && echo "$num is not a number" >&2 && return 2
       echo "$num is number"
   done
}   

#####MAIN####
echo -n "Enter: "
read num1
check $num1
stat=$?
echo $stat

echo "________________"
echo -n "Enter: "
read num2
check $num2
stat=$?
echo $stat
echo "_________________"
check $num1 $num2

Last edited by kshji; 01-27-2011 at 02:52 PM..
 

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LEARN ABOUT OSF1

line

line(1) 						      General Commands Manual							   line(1)

NAME

       line - Reads one line from standard input

SYNOPSIS

       line

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       line:  XCU5.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

OPTIONS

       None

DESCRIPTION

       The  line  command  copies one line, up to and including a newline, from standard input and writes it to standard output.  Use this command
       within a shell command file to read from your terminal.	The line command always writes at least a newline character.

NOTES

       The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead.

EXIT STATUS

       Success.  End-of-File.

EXAMPLES

       To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log

       This shell procedure displays the message: Enter comments for the log:

       It then reads a line of text from the keyboard and adds it to the end of the file log.  The echo  ':  c'  command  displays  a	:  (colon)
       prompt.	See the echo command for information about the c escape sequence.

SEE ALSO

       Commands:  echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p)

       Functions:  read(2)

       Standards:  standards(5)

																	   line(1)
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