"...connect to 900 routers using telnet and execute certain commands and capture the output..."

This seems to be some big monitoring task. You should consider to use Nagios or Icinga. See also Alerting On Critical State Changes.

Best regards, Karl

«The Crux of the Biscuit is the Apostrophe»

perl -MCrypt::CBC -E 'say Crypt::CBC->new(-key=>'kgb',-cipher=>"Blowfish")->decrypt_hex($ENV{KARL});'Help

In reply to Re: Regular expressions in shell prompts by karlgoethebier
in thread Regular expressions in shell prompts by vasanth.easyrider

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