How to check if a global variable exists inside a procedure?

[awyeah]

I know how to check how a file exists.

Code: Select all

if {[file exists $myfile]} {

And for arrays we can use if the array, list
exists

Code: Select all

if {[array exists $mylist]} {

But how to check if a global variable exists? inside
a different procedure, or even a local variable?

I am making a script which checks if a global
variable exists from another script, and then
it uses that variable for string matching purpose.

[strikelight]

see the manpages for 'info'

[awyeah]

Thanks... i'll do that.
Found it great.. quite simple!