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UGU: Unix Guru Universe - Unix Tip #4566- September 11, 2025
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Unix Tip #4566- September 11, 2025
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,
------------------- CUT HERE -------------------------
[ $# -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
------------------- CUT HERE -------------------------
This tip generously supported by: ian@kiwiplan.co.nz
NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.
LAST 5 TIPS
4565
- SET REMOTE DISPLAY QUICKLY
4564
- MULTI-SYSADMIN MONITORING
4563
- ABBREVIATE IN VI
4562
- BACKUP CRITICAL SYSTEM FILES
4561
- QUICK UNALIAS
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