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You were pretty close with your original code, just use double [ and ] :


if [[ "$test" != [0-9] ]];then
echo "not in range"
else
echo "number within range"
fi

@RudiC
Hi, queston is: the request is a validation check or only a check for the range?
This check have not sense for alphanumeric value of test variable.
Thanks

@franzpizzo: if LOWER is less or equal 0, and test is alpha, it will be considered "in range"!

read about the relational operators and boolean operators in shell ( google it )

Ok, Try this:
#!/usr/bin/expect
set timeout 10
set host [lindex $argv 0]
set user [lindex $argv 1]
set password [lindex $argv 2]

proc login {host user password} {
expect {
...