Re: [PLUG] Capturing command line, and stdio and error with bash

[Edmond Rodriguez <erodrig97.list@gmail.com>]

Maybe that would work, as on my machine this seems to put out lots of
^H when scrolling commands.   ^C 'ing out of a command not yet
entered, may still show the text though.

^[]0;edmondrod@localhost:~^G^[[?1034h[edmondrod@localhost ~]$ echo one^M
one^M
^[]0;edmondrod@localhost:~^G[edmondrod@localhost ~]$
wecho^H^[[K^H^[[K^H^[[K^H^[[K^H^[[Kecho two^M
two^M
^[]0;edmondrod@localhost:~^G[edmondrod@localhost ~]$ echo three^M
three^M
^[]0;edmondrod@localhost:~^G[edmondrod@localhost ~]$ echo four^C^M
^[]0;edmondrod@localhost:~^G[edmondrod@localhost ~]$ ^Gk^H^[[Kset -o vi^M
^[]0;edmondrod@localhost:~^G[edmondrod@localhost ~]$ set -o
vi^H^H^H^H^H^H^H^H^Hecho
three^H^H^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[C^[[C^[[2Pwo^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[Cone^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[Ctwo^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[Cone^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[Ctwo^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[C^[[Chree^H^H^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[C^[[C^[[2Pwo^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[Cone^H^H^H^H^H^H^H^H^[[C^[[4Pxit^H^H^H^H^[[Ccho
one^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[Ctwo^H^H^H^H^H^H^H^H^[[C^[[C^[[C^[[C^[[C^[[Chree^H^H^H^H^H^H^H^H^H^H^[[1Pset
-o vi^H^H^H^H^H^H^H^H^H^[[K^G^C^M
^[]0;edmondrod@localhost:~^G[edmondrod@localhost ~]$ set -o
vi^H^H^H^H^H^H^H^H^Hecho
three^H^H^H^H^[[2Pwo^H^H^Hone^H^H^H^H^H^H^H^[[4Pxit^H^H^H^Hset -o
vi^H^H^H^H^H^H^H^H^H^[[5Pexit^H^H^Hcho
one^H^H^Htwo^H^Hhree^H^H^H^H^H^H^H^H^H^H^[[1Pset -o
vi^H^H^H^H^H^H^H^H^H^[[K^Gexit^M
exit^M


On Sun, Sep 4, 2011 at 10:50 AM, Edmond Rodriguez
<erodrig97.list@gmail.com> wrote:
> Yes, I thought of doing something similar, but it still does not cover
> things like viewing history.  For example pulling up old commands.
> You end up with all the commands in the typescript (using script),
> though you really only entered one of them (which history records just
> fine).  Also things like running vi or whatever, I would just want the
> "vi xxx" to record, not everything going on in the vi session.
>
> Imagine that you are doing an install or some meticulous work
> manipulating things, and you want to record what you are doing.  What
> commands you actually entered, and what the applications or shell
> outputted, and that is it.      Of course, I realize there may be
> something out there that does this, but I am trying stay in the
> mindset of a  modern common Unix or Linux install (writing a script
> would be fine), without requesting new software installed.
>
> History does great recording commands.
>
> Script of I/O redirection using tee (though pain to type every time),
> does great for recording output.
>
> How to do both in one place?
>
>
> On Sun, Sep 4, 2011 at 10:10 AM, Alan D. Salewski <salewski@att.net> wrote:
>> On Sun, Sep 04, 2011 at 08:35:57AM -0400, Edmond Rodriguez spake thus:
>>> Well there has been lots of mail about redirection in bash.
>> *snip*
>>
>>> So I would want a script that has only the final result of my command
>>> entered (like history does) I entered, not the editing keystrokes as
>>> well (back space, emacs or vi control keys....cursor movements), and
>>> of course whatever else gets output to the terminal.    I realize if a
>>> formatting strings goes to the terminal from an *application* I am
>>> running,  I will get that, but I am just thinking of general basic
>>> text i/o going to the terminal from an application.
>>>
>>> Edmond
>>
>> Here you go:
>>
>> I started with the perl program found here:
>>
>>    http://unix.stackexchange.com/questions/14684/removing-control-chars-including-console-codes-colours-from-script-output/18979#18979
>>
>> The text of that is in the 'strip-em' program below. By itself, that
>> script could be used to post-process a file created by 'script' (or
>> similar). It tries to "remove carriage returns and do backspace-erasing
>> of previous characters", and in my simple test it seemed to do all
>> right.
>>
>> But since that's not quite what you're looking for, and because we're
>> all on a "redirection in bash" kick, I present the following
>> 'script-filt' program. It sets up a named pipe, and then fires up a
>> 'strip-em' process in the background to process whatever gets written to
>> the pipe. It then launches 'script' and tells it to write to the named
>> pipe rather than the normal 'typescript' file. From there it looks like
>> a normal 'script' session -- only the logged output is subject to
>> filtering. In the end, you're left with a 'typescript-filt' file. The
>> filtering is not quite perfect, but it's a good start.
>>
>> HTH,
>> -Al
>>
>>
>> ----script-filt------------------------8<---------------------------------
>> #!/bin/bash
>>
>> set -e
>>
>> declare -r pname="filt-${RANDOM}"
>>
>> mknod "${pname}" p
>>
>> ./strip-em < "${pname}" > 'typescript-filt' &
>>
>> script -f "${pname}"
>>
>> rm -f "${pname}"
>> ---------------------------------------8<---------------------------------
>>
>>
>>
>>
>> ----strip-em---------------------------8<---------------------------------
>> #!/usr/bin/perl
>> while (<>) {
>>    s/ \e[ #%()*+\-.\/]. |
>>       \r | # Remove extra carriage returns also
>>       (?:\e\[|\x9b) [ -?]* [@-~] | # CSI ... Cmd
>>       (?:\e\]|\x9d) .*? (?:\e\\|[\a\x9c]) | # OSC ... (ST|BEL)
>>       (?:\e[P^_]|[\x90\x9e\x9f]) .*? (?:\e\\|\x9c) | # (DCS|PM|APC) ...  ST
>>       \e.|[\x80-\x9f] //xg;
>>       1 while s/[^\b][\b]//g;  # remove all non-backspace followed by backspace
>>    print;
>> }
>> ---------------------------------------8<---------------------------------
>>
>>
>>
>>
>>
>> --
>> -----------------------------------------------------------------
>> a l a n   d.   s a l e w s k i                   salewski@att.net
>> 1024D/FA2C3588 EDFA 195F EDF1 0933 1002  6396 7C92 5CB3 FA2C 3588
>> -----------------------------------------------------------------
>> ___________________________________________________________________________
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>
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