记录Bash交互，分别保存STDIN，STDOUT [英] Record Bash Interaction, saving STDIN, STDOUT seperately

问题描述

所以我想记录我的bash交互，我知道我可以使用脚本或 ttyrec .除了我要比他们拥有更多的功能.分别保存输入(即STDIN)和输出(即STDOUT).

So I want to record my bash interaction, which I know I can do with script, or ttyrec. Except I want one feature more than they have. Save input (i.e STDIN), and output (i.e. STDOUT) separately.

类似(我键入了第一个"Hello World！")的东西，除了 script 当然需要一个 [file] arg，而不是两个:

So something like (where I typed the first "Hello World!"), except of course script takes one [file] arg, not two:

user@pc:~$ script input.txt output.txt
Script started
user@pc:~$ paste > textfile.txt
Hello World!
user@pc:~$ cat textfile.txt 
Hello World!
user@pc:~$ exit
Script done

所以 input.txt 如下:

user@pc:~$ paste > textfile.txt
Hello World!
user@pc:~$ cat textfile.txt 
user@pc:~$ exit

output.txt 如下:

Hello World!
exit

所以我想要一个类似 script 的程序，该程序可以保存STDIN&STDOUT分开.从目前开始，这将是 script 的正常输出(我不想要，需要将其分开):

So I want a program like script which saves STDIN & STDOUT separately. Since currently, this would be the normal output of script (which I do not want, and need seperated):

Script started

user@pc:~$ paste > textfile.txt
Hello World!
user@pc:~$ cat textfile.txt 
Hello World!
user@pc:~$ exit
exit

Script done

这是否存在，或者这可能吗?

Does this exist, or is this possible?

请注意 paste 命令的用法，因为我曾考虑过根据 user @ pc:〜$ 过滤输出文件，但就我而言(如>粘贴)，将无法正常工作.

Note the usage of paste command, since I had considered filtering the ouput file based on user@pc:~$, but in my case (as with paste) this would not work.

推荐答案

空

空被打包用于各种linux发行版(它是 empty-expect 在ubuntu上).

empty

empty is packaged for various linux distributions (it is empty-expect on ubuntu).

1. 打开两个终端
2. 终端1 :运行 empty -f -i in.fifo -o out.fifo bash
3. 终端1 :运行 tee stdout.log< out.fifo
4. 终端2 :运行 stty -icanon -isig eol \ 001;tee stdin.log> in.fifo
5. 在终端2 中键入命令，在终端1 中查看输出
   • 使用 stty icanon isig -echo
   修复终端设置
   • 使用 exec 2> stderr.log
   将stderr与stdout分开记录
   • 完成后，退出 bash shell；这两个 tee 命令都将退出

1. open two terminals
2. terminal 1 : run empty -f -i in.fifo -o out.fifo bash
3. terminal 1 : run tee stdout.log <out.fifo
4. terminal 2 : run stty -icanon -isig eol \001; tee stdin.log >in.fifo
5. type commands into terminal 2, watch the output in terminal 1
   • fix terminal settings with stty icanon isig -echo
   • log stderr separately from stdout with exec 2>stderr.log
   • when finished, exit the bash shell; both tee commands will quit

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其他一些选择:

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Some other options:

您可以尝试 peekfd (属于 psmisc 软件包的一部分).它可能需要以root身份运行:

You could try peekfd (part of the psmisc package). It probably needs to be run as root:

peekfd -c pid fd fd ... > logfile

其中pid是要附加的过程， -c 表示也要附加到子级，而 fd 是要观察的文件描述符列表(基本上是 0， 1 ， 2 ).还有许多其他选项可调整输出.

where pid is the process to attach to, -c says to attach to children too, and fd are list of file descriptors to watch (basically 0, 1, 2). There are various other options to tweak the output.

日志文件将需要进行后期处理以符合您的要求.

The logfile will need postprocessing to match your requirements.

在 unix stackexchange 上，已建议使用 SystemTap 工具.但是，配置并非易事，您仍然必须编写一个将stdin和stdout分开的模块.

Over on unix stackexchange, use of the SystemTap tool has been proposed. However, it is not trivial to configure and you'll still have to write a module that separates stdin and stdout.

sysdig 和使用 LD_PRELOAD ，您可以包装诸如write(2).

Using LD_PRELOAD, you can wrap lowlevel calls such as write(2).

您可以在 strace 或 ltrace 下运行Shell，并记录传递给系统和库函数(例如write)的数据.需要大量的后处理:

You can run your shell under strace or ltrace and record data passed to system and library functions (such as write). Lots of postprocessing needed:

ltrace -f -o ltrace.log -s 10000000000 -e write bash

修补ttyrec

ttyrec.c只有500行相当简单的代码，并且看起来很容易打补丁以使用多个日志文件.

patch ttyrec

ttyrec.c is only 500 lines of fairly straightforward code and looks like it would be fairly easy to patch to use multiple logfiles.

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