Re: help with joining files

James Miller Sat, 16 Apr 2005 10:27:42 -0700

Thanks for your response, J. I'm faced with a fairly complex task here. I suppose a more reasonable man would say, "heck with this. I'm gonna go buy myself some CD's." But if I were a more reasonable man, I wouldn't be using Linux, now would I? . . . :)

Some of what you're saying is a bit beyond me. I'd kinda like to get to the point where I could understand it better, and understand the philosophy better (at the link you provide). But I'm sort of an old hacker (I use that term in its old-fashioned, non-technical sense), so at the very least I'll have to get there very slowly and gradually.

Your assumption about movement numbers is wrong, unfortunately. I tried to make that clear in my note to the list, but apparently did not succeed. So the bash examples you give are not going to get me too far--at least not that I can see. But I was able to use some things in your post to help automate things a bit more: I'm now using the "ls -l partial_file_name <tab>" to get the salient information in a more discrete place from which I can copy and paste. I do have to do some "ls partial_file_name <tab>ing" to even get to the point where I can use ls -l (-l gives me the time information I need in order to cat things together in the right order), but I've already reduced the number of steps to get full_piece.mp3.

Here's a more real world example of what I'm doing:

[EMAIL PROTECTED]:~/radio/editing/classcl$ ls -l Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_* -rw-r--r-- 1 me me 9617922 2005-04-15 13:50 Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_Adagio_-_Allegro.mp3 -rw-r--r-- 1 me me 5612894 2005-04-15 13:56 Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_Andante_con_Variazioni.mp3 -rw-r--r-- 1 me me 8120985 2005-04-15 14:08 Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_Finale-_Allegro_vivace.mp3 -rw-r--r-- 1 me me 2760026 2005-04-15 13:59 Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_Minuetto.mp3 [EMAIL PROTECTED]:~/radio/editing/classcl$ cat Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_Adagio_-_Allegro.mp3

~/radio/editing/Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4.mp3

[EMAIL PROTECTED]:~/radio/editing/classcl$ cat Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_Andante_con_Variazioni.mp3

~/radio/editing/Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4.mp3

[EMAIL PROTECTED]:~/radio/editing/classcl$ cat Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_Minuetto.mp3

~/radio/editing/Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4.mp3

[EMAIL PROTECTED]:~/radio/editing/classcl$ cat Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_Finale-_Allegro_vivace.mp3

~/radio/editing/Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4.mp3

[EMAIL PROTECTED]:~/radio/editing/classcl$ mv Anton_Reicha-_Albert_Schweitzer_Quintett__-_WInd_Quintet_No.22_in_E_minor_Op.100_No.4-_* ~/radio/editing/parts-done/ [EMAIL PROTECTED]:~/radio/editing/classcl$

I don't really need file permissions information, so using the -l switch is overkill. But so far I have not determined how I can get the time information I need without the other, file permission info.

On Sat, 16 Apr 2005, J. wrote:

Unix and GNU/Linux type systems do not store the file creation time as
static information. There are `three sorts of time` that are stored with
each file:

C time - changed time info of the corresponding inode,
M time - last modified time,
A time - last access time

These can be changed by other programs. For example `touch' . So be
careful how you implement this and how you group corrosponding files by
time .

I'm not doing anything with these files after they're saved to my HD other than listing them (like, with ls) or looking at contents of directories with mc. Could any of these change the time information ls -l gives me?

Personally I would have renamed each file correctly according to the
task I wanted to preform right from the start, thus to include
the last modified UTC time in the filename. That way you can list each
file belonging to a certain group `sort -n' them by time and concat them
as appropiate.

Good idea. I'm just technically-challenged enough that I have no idea how to do this (or even where to start) where it concerns recording streaming audio. I suppose I'd need to make streamripper run as part of a larger script that would likewise invoke Flemming's remove_invalid, etc. Mind boggling!

B.t.w. you could also use `dd', with the `notrunc' parameter . That is
more optimized for this task.


I'll look into this.

The GLUE at the GNU/Linux , Unix type command-line provides was already
there long before. Pls. Have a look at the `UNIX philosophy' since I
think it will give some more insight in the background of these tasks
you are trying to accomplish.

http://www.google.com/linux?hl=en&lr=&q=unix+philosophy&btnG=Search


Thanks for the link.

James
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Re: help with joining files

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