awk从入门到入土（21）awk脚本调试

Posted 2022-09-03 奇妙之二进制

awk支持调试模式，像gdb一样设置断点、单步调试awk脚本。

cmake  commands  Desktop            Downloads  etc  FlameGraph        g.h   k.cc  l     lib   main.cc  Music  perf.data.old  pol       script.awk  snap   test2      Videos
victory@victory-ThinkPad-T490:~$ cat script.awk 
#!/usr/bin/awk -f

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


victory@victory-ThinkPad-T490:~$ 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