Shell Programming and Scripting

Hello All,

After a HDD crash, I would like to selectively back up all my script files. What is the most efficient way to do this?

The pseudo code I was thinking of was something like this:

for a in `find ./ -name "*"`
do
if (file $a) == Bourne|Tcsh|... then
echo $a >> ListofFilestoBeArchived
done

Any ideas? Thanks.

PRU

I would update the find command.
# this would only get executable files

Code:

find . -type f -executable

# this would get that have been updated sense the last backup

Code:

find . type f -executable -newer <lastbackupfile>

The trouble with that is on my external NTFS formatted HDD, everything is mounted as executable. I tried changing the ownership and permissions as root but that does not do anything. (Ubuntu). So I cannot just use

Code:

find . -type f -executable

if you have the permission to read from the mounted HDD ( I guess its there), there should not be any problem.

you need to provide mounted device path to the find command.

Code:

find /mnt/external_ntfs_etc -type f -name "<your preference>"

There seems to be some confusion, so let me rephrase the question:
How can I just extract the files are shell scripts?

I can mount the HDD, I have r/w permissions but all files have the executable bit set. So I cannot do something like : find . -perm -664 since that lists all files (including data files)

you have "-name" filter.
if all the files are scripts there should be something similar in the names and their extension
can be same

so you can use the following if you want all the files with ".sh" ext.
you can logical OR the filter with any other extension if you have.

It will be better if you can post what type of executable you want from the mounted location.

Sorry, Anchal, if all the scripts had an extension or had a simple filer, I wouldn't be posting this message. There are some scripts with no extension (bad mistake on my part). Many of them have the preable though (#!/bin/bash etc). So to repeat the question, I would like to selectively find files whose file output looks like this:

Code:

file CountRatesWithRootScript 
CountRatesWithRootScript: Bourne-Again shell script text executable