Show HN: GdbShellPipe – Pipe output of gdb commands to shell • Hacker News Board

Show HN: GdbShellPipe – Pipe output of gdb commands to shell

#1

Post by hq6 » Thu, Jul 19, 2018, 12:59 AM UTC

Show HN: GdbShellPipe – Pipe output of gdb commands to shell
github.com

Re: Show HN: GdbShellPipe – Pipe output of gdb commands to shell

#2

Post by xvilka » Thu, Jul 19, 2018, 1:53 AM UTC

Similar thing is available within radare2 [1] too, it is available as a small library for different languages and called r2pipe [2].

[1] https://github.com/radareorg/radare2

[2] https://radare.gitbooks.io/radare2book/content/

Re: Show HN: GdbShellPipe – Pipe output of gdb commands to shell

#3

Post by jolmg » Thu, Jul 19, 2018, 1:55 AM UTC

I didn't understand the example in the README. There is no "main" in those lines, so why did grep output them?

Re: Show HN: GdbShellPipe – Pipe output of gdb commands to shell

#4

Post by monocasa » Thu, Jul 19, 2018, 2:12 AM UTC

jolmg wrote: post #3

I didn't understand the example in the README. There is no "main" in those lines, so why did grep output them?

I think they meant to type

  (gdb) shell-pipe disas | grep mov

Re: Show HN: GdbShellPipe – Pipe output of gdb commands to shell

#5

Post by as-j » Thu, Jul 19, 2018, 4:26 AM UTC

monocasa wrote: post #4

jolmg wrote: post #3

I didn't understand the example in the README. There is no "main" in those lines, so why did grep output them?

I think they meant to type (gdb) shell-pipe disas | grep mov

Must be because it doesn’t make sense otherwise...I submitted a PR to fix it.

Re: Show HN: GdbShellPipe – Pipe output of gdb commands to shell

#6

Post by hq6 » Thu, Jul 19, 2018, 6:39 AM UTC

as-j wrote: post #5

monocasa wrote: post #4

Earlier quoted context omitted.

I think they meant to type (gdb) shell-pipe disas | grep mov

Must be because it doesn’t make sense otherwise...I submitted a PR to fix it.

Thank you for the PR! That error was the result of copy-pasting output and typing the command manually.

Re: Show HN: GdbShellPipe – Pipe output of gdb commands to shell

#7

Post by wazari972 » Thu, Jul 19, 2018, 1:27 PM UTC

nice and easy ! I remember that the piping functionality was discussed in GDB mailing list long ago, but I guess it never got accepted!

it would have allowed writing

    (gdb) disas | grep mov

instead of

    (gdb) shell-pipe disas | grep mov