fork download 
  1. set ip "10.21.128.7(u)"
  2. puts [regexp {[u]} $ip match b]
  3. puts $match 
  4. puts $b
  5.  
  6.  
Success #stdin #stdout 0.02s 5272KB
comments (?)
stdin 
Standard input is empty
stdout 
1
u
https://ideone.com/J4VDW
language:
TCL (tcl 8.6)
created:
14 years ago
visibility:
public

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