Test variable

Shell Programming and Scripting
1

hi,
i store a constant in a variable and want to test whether it is M or Z.
how can i achieve this?? please help

variable='M'
if [ $variable = 'M' ]
then
ehco 'success'
fi;

is this right ??

2

i will let somebody else answer that. i prefer case

case $variable in 
 "M" ) echo "yup " ;;
 * ) echo "nope" ;;
esac
3

Like ghostdog, I prefer to use case, but yours will work (almost).

The variable should be quoted or you will get a syntax error if it is empty.

variable=M
if [ "$variable" = M ]
then
  echo success
fi

#