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Top Forums Shell Programming and Scripting Create md5 sums and archive the resulting md5 files Post 302554282 by SurfTranquille on Sunday 11th of September 2011 08:34:09 AM
Old 09-11-2011
Create md5 sums and archive the resulting md5 files

Hello everyone,

I am looking to basically creating md5sum files for all iso files in a directory and archive the resulting md5 files into a single archive in that very same directory.
I worked out a clumsy solution such as:

Code:
#find files for which md5sum are to be created and store the resulting md5sum in a particular file
find ./ -name "*.iso" |
while read F
do
	G=$(echo "$F".md5 | sed 's/^..//')
	md5sum $F > $G
done

#create the tar archive with the new created md5 files
tar -cvf archive.tar *.md5

#remvove the md5 files
rm *.md5

but I am not satisfied by the result since:
1- it actually writes the temporary md5 files that I need to remove after the archive is done
2- it is clumsy

I feel that this whole thing can be wrapped in a single line command, but fail to see how to do.
Any help would be appreciated.

Regards,
 

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TAR(1)							      General Commands Manual							    TAR(1)

NAME
tar - archiver SYNOPSIS
tar key [ file ... ] DESCRIPTION
Tar saves and restores file trees. It is most often used to transport a tree of files from one system to another. The key is a string that contains at most one function letter plus optional modifiers. Other arguments to the command are names of files or directories to be dumped or restored. A directory name implies all the contained files and subdirectories (recursively). The function is one of the following letters: c Create a new archive with the given files as contents. x Extract the named files from the archive. If a file is a directory, the directory is extracted recursively. Modes are restored if possible. If no file argument is given, extract the entire archive. If the archive contains multiple entries for a file, the lat- est one wins. t List all occurrences of each file in the archive, or of all files if there are no file arguments. r The named files are appended to the archive. The modifiers are: v (verbose) Print the name of each file treated preceded by the function letter. With t, give more details about the archive entries. f Use the next argument as the name of the archive instead of the default standard input (for keys x and t) or standard output (for keys c and r). u Use the next (numeric) argument as the user id for files in the output archive. This is only useful when moving files to a non-Plan 9 system. g Use the next (numeric) argument as the group id for files in the output archive. EXAMPLES
Tar can be used to copy hierarchies thus: {cd fromdir; tar c .} | {cd todir; tar x} SOURCE
/sys/src/cmd/tar.c SEE ALSO
ar(1), bundle(1), tapefs(1) BUGS
There is no way to ask for any but the last occurrence of a file. File path names are limited to 100 characters. The tar format allows specification of links and symbolic links, concepts foreign to Plan 9: they are ignored. TAR(1)
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