simple one-liner for mass md5-summing

[Stewart C. Russell]

daniel wrote:
> i've got a directory of about 20 files that i'd like to run an md5 sum on each 
> and put the result into a file

Though you have an answer, the following script will do this 
recursively, for the current directory if no argument is specified, or 
the directory specified as its argument. It's handy for making checksums 
before writing to removable media:

#!/bin/sh
# md5here - do md5sum of tree to stdout; defaults to $PWD,
#  otherwise first arg is top level of tree.

# don't send output to somewhere in the tree or you get
#  a file that fails checksum... ;-)

cd ${1-.}
find `pwd` -type f -print0 | xargs -0 md5sum -b | sed "s,`pwd`/,,;"
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