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what is Xterm in shell script and uses of it

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what is xterm and it uses

posted Apr 25, 2016 by anonymous

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1 Answer

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xterm is the standard terminal emulator for the X Window System. A user can have many different invocations of xterm running at once on the same display, each of which provides independent input/output for the process running in it.

See the following link it would be helpful
http://linux.die.net/man/1/xterm

answer Apr 25, 2016 by Salil Agrawal
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+1 vote

I have some unique requirement, where I need to do something like this -
1. My script takes the argument as file name which is absolute filename.
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+2 votes

I am using below script to validate IPV6 address but this script also pass invalid IP such as empty string, name etc.

if [[ "$IPv6ADDR"=~"^:?([a-fA-F0-9]{1,4}(:|.)?){0,8}(:|::)?([a-fA-F0-9]{1,4}(:|.)?){0,8}$" ]]; then
  echo "valid ipv6 addr"
  break;
else
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  break;
fi

Can someone identify what's wrong in the regex, Please?

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