tee_exec.sh

tee_exec.sh

#!/bin/zsh

tempdir=$(mktemp -d) || exit
in_pipe="$tempdir/in_pipe"
out_pipe="$tempdir/out_pipe"
pipe="$1"
shift

function cleanUp() {
    rm -rf -- "$tempdir"
    rm -f -- "$pipe"
}

mkfifo $in_pipe
mkfifo $out_pipe
mkfifo $pipe

trap "cleanUp" EXIT

cat $in_pipe | (while read line; do echo "[IN] $line"; done) > $pipe &
cat $out_pipe | (while read line; do echo "[OUT] $line"; done) > $pipe &

tee -a $in_pipe | $* | tee -a $out_pipe

cleanUp
trap - EXIT
exit