Linux Shell script

Question

I modified a bash_profile of "oracle" user. As I swith user from root to oracle user by

#su - oracle

it will ask for user input by displaying below statement

Select Version of Oracle [10G or 11G]:

Is there any way , If am not providing Input lets say for 5 seconds or 10 seconds it must take any default value; lets say either 10G or 11G. whatever I have mentioned in the code it should wait for input for 5/10 seconds if not provided by user code should provide automatically the default value. How can we handle this in the code.

Any help is appreciable.

This Is what I coded in .bash_profile. It will ask for Version of Oracle.So can we just wait and force to set a default value if user is taking more than 5/10 seconds **********************************************************************# .bash_profile # Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi PATH=$PATH:$HOME/bin echo -n "Select Version of Oracle [10G or 11G]:" read Oversion version=$(echo $Oversion | tr [:lower:] [:upper:]) if [ "$version" = "10G" ] then ORACLE_BASE=/data1/oracle10g; export ORACLE_BASE PATH=/usr/sbin:$PATH; export PAT echo $version — K Maheshwar Rao
– K Maheshwar Rao, Commented Mar 8, 2011 at 7:12
As a user, I would prefer that you pick a default, assign it, emit a message indicating that it has been assigned, and let me take an action to change it if desired. Timed out interaction in a .bashrc is as annoying as confirmation pop-up windows or clippy. — William Pursell
– William Pursell, Commented Mar 8, 2011 at 12:30

NuclearDog · Accepted Answer · 2011-03-08 07:04:29Z

2

echo -n "Oracle version (10g/11g)? "
read -t 10 VERSION || VERSION="10g"
echo $VERSION

For reference - bash read command

answered Mar 8, 2011 at 7:04

NuclearDog

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Dennis Williamson · Accepted Answer · 2011-03-08 12:25:42Z

0

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
    . ~/.bashrc
fi
PATH=$PATH:$HOME/bin

read -t 10 -p "Select Version of Oracle [10G or 11G]:" version

if [ "$version" = "10G" || "$version" = "10g" ]
then
    ORACLE_BASE=/data1/oracle10g
fi
export PATH=/usr/sbin:$PATH
echo $version

answered Mar 8, 2011 at 12:25

Dennis Williamson

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