TRPL

#!/bin/bash

START_TIME=$(date +%s)

NUM_INSTANCES=5

TARGET_SCRIPT="./client.sh"

PIDS=() 

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"

FULL_TARGET_SCRIPT="$SCRIPT_DIR/${TARGET_SCRIPT#./}"

rm -f TestLog*

rm -f my-server*

rm -f *.log

if [ ! -x "$FULL_TARGET_SCRIPT" ]; then

    echo "Error: Target script '$FULL_TARGET_SCRIPT' is not executable."

    echo "Please ensure the file exists and has execute permissions (chmod +x $TARGET_SCRIPT)."

    exit 1

fi

echo "Starting $NUM_INSTANCES instances of $TARGET_SCRIPT in the background (no new windows will open)..."

echo "---"

for i in $(seq 1 $NUM_INSTANCES); do

    $FULL_TARGET_SCRIPT &

    PIDS+=($!)

    echo "Launched Worker $i (PID: $!)"

done

echo "---"

echo "All $NUM_INSTANCES workers launched. Waiting for them to finish..."

for pid in "${PIDS[@]}"; do

    wait "$pid"

done

END_TIME=$(date +%s)

TOTAL_TIME=$((END_TIME - START_TIME))

H=$((TOTAL_TIME / 3600))

R1=$((TOTAL_TIME % 3600))

M=$((R1 / 60))

S=$((R1 % 60))

TIME_OUTPUT=""

if [ "$H" -gt 0 ]; then

    TIME_OUTPUT+="${H} hours "

fi

if [ "$M" -gt 0 ]; then

    TIME_OUTPUT+="${M} minutes "

fi

if [ "$S" -gt 0 ] || ([ "$H" -eq 0 ] && [ "$M" -eq 0 ]); then

    TIME_OUTPUT+="${S} seconds"

fi

echo "---"

echo "All parallel processes have finished."

echo "Total execution time: ${TIME_OUTPUT}"