Utility for extracting MIME attachments

Question

I am looking for a command-line tool for Unix (ideally, available in a Debian / Ubuntu package) for extracting all MIME parts from a multipart email message (or the body from a singlepart with an interesting content-type, for that matter).

I have been using the mimeexplode tool which ships with the Perl MIME::Tools package, but it's not really production quality (the script is included as an example only, and has issues with what it regards as "evil" character sets) and I could certainly roll my own script based on that, but if this particular wheel has already been innovated, perhaps I shouldn't.

Answer 1

munpack from mpack worked for me

In Debian/Ubuntu:

sudo apt-get install mpack
munpack -f mime-attachments-file

Answer 2

The mu project seems to include a mu-extract command that looks as if it might do what you want. And it appears to be available as an Ubuntu package already.

NB: I haven't actually used this tool myself.

Answer 3

I needed to unpack a chrome dmp file in order to extract the minidump for analysis on Ubuntu 12.04.4. I found that the mime file had been written in DOS format despite being in a Linux environment, so neither mpack or maildir-utils worked out of the box. The following steps worked for me:

sudo apt-get install dos2unix mpack
cp chromium-renderer-minidump-c3303784f176fb58.dmp backup
dos2unix -f chromium-renderer-minidump-c3303784f176fb58.dmp
munpack chromium-renderer-minidump-c3303784f176fb58.dmp

The -f on dos2unix is required to force the conversion on a binary file. The maildir-utils mu program crashed trying to read the dmp file even after dos2unix conversion.

Answer 4

• mpack tools, and munpack
• GNU base64 decoder
• mimedecode
• mha-decode
• UUDeview
• OpenSSL