redirection if command help please

Shell Programming and Scripting
1 
#!/bin/bash

    clear
    echo "Hello $USER"
    echo "Do you wish to run this network configuration script [Y/N]?"
    read option
    
    
    if($option == 'Y' || 'y' )
    then
                    
        echo " auto eth0
        iface eth0 inet static
        address 192.168.1.161
        netmask 255.255.255.0
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.206:7926
        
        auto eth0:1
        iface eth0:1 inet static
        address 146.192.161.112
        netmask 255.255.255.0
        network 146.192.161.0
        broadcast 146.192.161.255
        gateway 146.192.161.254
        
        auto eth0:2
        iface eth0:2 inet static
        address 10.10.121.116
        netmask 255.255.255.0
        network 10.10.121.0
        broadcast 10.10.121.255
        gateway 10.10.121.211:3162 " >> /etc/network/interfaces
    fi
    
    if($option != "Y" || "y")
    then
        echo "Okay! Bye!"
    fi

^^^^^ that is my entire script....all i am attempting is:

IF user input is Y or y then add text to file indicated......else if user option is not Y or y then print message and exit.

I get the following error message after running the script:

Hello administrator
Do you wish to run this network configuration script [Y/N]?
y
./net script2.sh: line 9: y: command not found
./net script2.sh: line 9: y: command not found
./net script2.sh: line 37: y: command not found
./net script2.sh: line 37: y: command not found

this output is given with every input, although the error does change, but, only where it will replace the y with the letter inputted....can anyone help please???

thanks in advance

wez

2

if syntax is not correct. it should be:

if [[ "$option" = "Y" || "$option" = "y" ]]

and

if [[ "$option" != "Y" && "$option" != "y" ]]
3

Or:

case "${option}" in
           "Y"|"y")     # Do the task
                            echo " auto eth0
                            .... et cetera ....
                            gateway 10.10.121.211:3162 " >> /etc/network/interfaces
           ;;
           *)            # Exit
           echo "Okay! Bye!"
           ;;
esac
4

thanks for the replies however none of the fixes work, i am still recieveing the same errors. any other ideas please guys?

thanks again

5

Please post the entire modified script, the exact command you're executing and the exact output.

6

Check what comparison operators bash has. is it = or == or eq or -eq. Check the syntax in if line as well.