Expect - how to find out if variable contains a string

Question

Hello Stack over flowers ;-)

I am looking for equivalent of bash's command, but for expect:

VAR="ble something"

if [[ "$VAR" =~ "*something" ]]; then
  VAR2="XYZ"
else
  VAR2="YYY"
fi
echo $VAR2

# VAR2 = YYY in that case

I tried something like

if {[$VAR =~ "*3*"]}
{
set VAR2 "XYZ"
puts "$VAR2"
}
else
{
set VAR2 "YYY"
puts "$VAR2"
}

...but no luck. Thank you in advance for Your help.

Please take a look at this thread: https://stackoverflow.com/questions/229551/how-to-check-if-a-string-contains-a-substring-in-bash — Rubatharisan Thirumathyam, Aug 20 '21 at 07:40
[tag:expect] uses [tag:tcl] which is a different language. you can try my [sexpect](https://github.com/clarkwang/sexpect) if you are more comfortable with shell commands. — sexpect - Expect for Shells, Aug 20 '21 at 07:58
to learn Tcl you can refer to its official doc: https://www.tcl.tk/doc/ — sexpect - Expect for Shells, Aug 20 '21 at 08:00

score 0 · Answer 1 · answered Aug 27 '21 at 18:42

Expect is really an extension to the Tcl language, which means you can use string match:

if {[string match "*3*" $VAR]} {
    # It is a match, do something
} else {
    # Not a match
}

The string match command returns 1 if it matches, and 0 if it does not. Note that string match behaves like wildcard match, not regular expression match.

Expect - how to find out if variable contains a string

1 Answers1