if statement

Shell Programming and Scripting
1

can someone please tell me what is wrong with the below. i'm trying to get a script to run if the content of a variable is either small letter y or capital letter Y.

if [ "$adfdf" = "y" || "$adfdf" = "Y" ]
then
whatever
fi

2

Which shell? For ksh, try:

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

or even simpler:

if [[ "$adfdf" = [Yy] ]]
3

or u could use

if [ "$adfdf" == "y" -o "$adfdf" == "Y" ]; then
    echo good
fi
4

thanks a BIZILLION. guys.

5

The equality test operator is = not ==, however some unix flavour supports it

if [ "$adfdf" = "y" -o "$adfdf" = "Y" ]; then
    echo good
fi

Jean-Pierre.