Awk from getting started to digging in (21) awk script debugging

awk Support debugging mode , image gdb Set breakpoints as before 、 Step by step debugging awk Script .

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[email protected]:~$ cat script.awk 
#!/usr/bin/awk -f

BEGIN {
	for (i = 1; i <= 5; ++i) 
		print i 
}

[email protected]:~$ awk --debug -f script.awk 
gawk> h
backtrace:
	backtrace [N] - print trace of all or N innermost (outermost if N < 0) frames
break:
	break [[filename:]N|function] - set breakpoint at the specified location
clear:
	clear [[filename:]N|function] - delete breakpoints previously set
commands:
	commands [num] - starts a list of commands to be executed at a breakpoint(watchpoint) hit
condition:
	condition num [expr] - set or clear breakpoint or watchpoint condition
continue:
	continue [COUNT] - continue program being debugged
delete:
	delete [breakpoints] [ran