XBar/BitBar Monitor

xbar_monitor.sh

#!/bin/bash
# xbar seems to freeze when computer goes to sleep. this monitors that and restarts it if detected
# Parameters
log_file="/tmp/xbar.log"
command_to_run="/Applications/xbar.app/Contents/MacOS/xbar"

# Check if log file exists
if [ ! -f "$log_file" ]; then
    touch "$log_file"
fi

# Function to check if the command is already running
is_command_running() {
    pgrep -f "$command_to_run" > /dev/null
    return $?
}

# Function to run the command
run_command() {
    if is_command_running; then
        echo "$(date +"%Y/%m/%d %H:%M:%S") - Command is already running." >> $log_file
        return 0
    fi
    $command_to_run &> $log_file &
    echo $!
}

# Start the command and get PID
pid=$(run_command)

# Monitor log file for ERR
while true; do
    if grep --line-buffered -q "ERR: signal: killed" $log_file; then
        echo "$(date +"%Y/%m/%d %H:%M:%S") - ERROR detected, restarting" >> $log_file
        # Kill original command and re-run
        kill -TERM $pid
        sleep 2
        kill -0 $pid 2>/dev/null && kill -KILL $pid
        > $log_file
        pid=$(run_command)
    fi

    sleep 5 # Wait for log file to update
done