Unix Tip: SHARING STDIN/STDOUT ON 2 TERMINALS

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Unix Tip 3160 - October 1, 2009

http://www.ugu.com/sui/ugu/show?tip.today

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SHARING STDIN/STDOUT ON 2 TERMINALS

Ever wanted the standard input and standard output to be shared on two terminals?

Try the following short script,

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[ $# -lt 2 ] && echo "Usage: $0 program ttytodupon" && exit 2
mytty=`tty`
prog=$1
othertty=$2
sh -c "$prog|tee -a $mytty" 1>$othertty 2>&1 0>$othertty

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This tip generously supported by: ian@kiwiplan.co.nz

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