function terminating if i give input as space or no input and enter
HI
i have written a script to ask input from the user.
this script should promote the user for y/n input. if user enters anyother input then y/n
the script promotes him again. this below code is working fine for all the cases.
except for space and enter " if i give space and enter it is printing
echo "\n Goodbye ... !!!"
Code:
while [ ${confirm} != 'y' -a ${confirm} != 'Y' ]
do
echo "\n Do you want to continue ? (y/n)"
read confirm # reads the option and proceedsconfirm
if [ ${confirm} != 'n' -a ${confirm} != 'N' ]
then
if [ ${confirm} != 'y' -a ${confirm} != 'Y' ]
then
echo "\n ********** Warning - Invalid input -Please enter a valid input **********"
else
echo
fi
else
echo "************ User terminated ********"
echo "\n Goodbye ... !!!"
exit 0;
fi
done
Any ideas
Moderator's Comments:
Please use code tags when posting data and code samples!
Last edited by vgersh99; 08-02-2012 at 11:57 AM..
Reason: code tags, please!
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LEARN ABOUT CENTOS
service
service(8) System Manager's Manual service(8)NAME
service - run a System V init script
SYNOPSIS
service SCRIPT COMMAND [OPTIONS]
service --status-all
service --help | -h | --version
DESCRIPTION
service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working
directory set to /.
The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT. The supported values of COMMAND depend on the
invoked script, service passes COMMAND and OPTIONS it to the init script unmodified. All scripts should support at least the start and
stop commands. As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start
command.
service --status-all runs all init scripts, in alphabetical order, with the status command.
If the init script file does not exist, the script tries to use legacy actions. If there is no suitable legacy action found and COMMAND is
one of actions specified in LSB Core Specification, input is redirected to the systemctl. Otherwise the command fails with return code 2.
FILES
/etc/init.d
The directory containing System V init scripts.
ENVIRONMENT
LANG, TERM
The only environment variables passed to the init scripts.
SEE ALSO chkconfig(8), ntsysv(8), systemd(1), systemctl(8), systemd.service(5)
Jan 2006 service(8)
08-02-2012
function terminating if i give input as space or no input and enter
