Constraint in while loop

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December 7th, 2011, 08:44 AM

thelakbe

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Constraint in while loop

Hi,

I have the following code

Code:

USER=`id|sed -n 's/^[^(]*(\([^)]*\)).*/\1/p'`
while :
        do
        tput cup 9  1 ; echo $CL
        tput cup 7  1 ; echo "Proceed with daily clean up operation (Y/N): _ \c"
        tput cup 7 46 ; read _Proceed
        ##
        ## Validate reply
        ##
        _Proceed="$(echo "$_Proceed" | tr "[:lower:]" "[:upper:]")"

        if [ "$_Proceed" != "Y" -a "$_Proceed" != "N" ] ; then
        tput cup 9 1 ; echo " ERROR: Proceed reply ${_Proceed} is invalid\c"

  Pause ; continue

                  ##If yes proceed, follow

                  if [ "$_proceed" = "Y" ]; then
echo $ENTER THE FILE NAME TO MAIL
read F
#/etc/outils_root/admin_root/send_mail_pj.ksh -s "[PHALANGER_FILES/$USER/`uname -n`]" -f $F -d $DESTINATAIRE
fi

  ## If no proceeed, exit routine

  ##

  if [ "$_Proceed" = "N" ] ; then return ; fi


  break

  done

  fi

while executing this i have a error
./mail.sh: syntax error at line 27 : `done' unexpected
i belive some loop issue but i'm unable to trace it please help me on this.

thanks for the help

Regards
Thelak

December 7th, 2011, 09:24 AM

ishnid

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What scripting language are you using?

In bash (for example), a "while" loop is terminated with a "done" statement: see here.

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December 8th, 2011, 01:39 AM

thelakbe

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Quote:

Originally Posted by ishnid

What scripting language are you using?

In bash (for example), a "while" loop is terminated with a "done" statement: see here.

Hi
i missed out the whole query sorry for that now i modified
it
it's having the done but its expecting something
Thanks for understanding.

Regards
Thelak

December 8th, 2011, 04:25 AM

SimonJM

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typo

I generally don't put a colon after a while (as far as I am aware it is redundant).

Code:

_Proceed="$(echo "$_Proceed" | tr "[:lower:]" "[:upper:]")"

is probably not doing what you think due to the usage of the quotes, try:

Code:

_Proceed=$(echo "$_Proceed" | tr "[:lower:]" "[:upper:]" | cut -c 1)

which will also, as a benefit, only return the first character, so "no" or "yes", etc., can be used as valid input

If you are using bash, then your echo commands that use \c will need the -e parameter.

But your main issue is that you have mis-placed the loop/conditional terminators. Without the actual code, what you have is:

Code:

while
  if
    if
    fi
  fi
  fi
done
fi

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Constraint in while loop

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