truss (sunos)

# Start tracing a program by executing it, following all child processes:
truss -f {{program}}

# Start tracing a specific process by its PID:
truss -p {{pid}}

# Start tracing a program by executing it, showing arguments and environment variables:
truss -a -e {{program}}

# Count time, calls, and errors for each system call and report a summary on program exit:
truss -c -p {{pid}}

# Trace a process filtering output by system call:
truss -p {{pid}} -t {{system_call_name}}