From: Dave Pearson <davep@hagbard.demon.co.uk>
Date: Thu, 26 Jun 1997 15:59:07 +0100

I've attached the file (bash script) as mutt.octet.filter.
 
The entry that uses it is in my ~/.mutt_mailcap and reads:
 
  application/octet-stream; mutt.octet.filter %s | vcat -s; copiousoutput
 
(vcat is a simple cat utility that strips out non-printable stuff).
 
My mailcap path is "~/.mutt_mailcap:/usr/local/etc/mailcap".
 

#!/usr/local/bin/bash

function ShowTAR()
{
    tar tvvf "$1" 2> /dev/null
}

function ShowTGZ()
{
    tar tzvvf "$1" 2> /dev/null
}

function ShowGZIP()
{
    gzip -dc "$1" 2> /dev/null
}

function ShowZIP()
{
    unzip -l "$1" 2> /dev/null
}

function ShowARJ()
{
    unarj l "$1" 2> /dev/null
}

function ShowEXE()
{
    echo "$(basename "$1"): DOS/Windows executable"
}

function Showdata()
{
    echo "$(basename "$1"): unprintable data"
}

function ShowMISC()
{
    FILE_TYPE=$(file -z "$1" 2> /dev/null)

    if [ $? -gt 0 ]
    then
	FILE_TYPE=$(file "$1" 2> /dev/null)
    fi

    FILE_TYPE=$(echo "$FILE_TYPE" | cut -d' ' -f 2-)

#    echo "'$(basename $1)' appears to be of the type:"
#    echo $FILE_TYPE
#    echo

    case "$FILE_TYPE" in
	*tar*archive*gzip* ) ShowTGZ  "$1";;
	*tar*archive*      ) ShowTAR  "$1";;
	*gzip*             ) ShowGZIP "$1";;
	*ARJ*archive*data* ) ShowARJ  "$1.";; # "." gets round bug in unarj.
	*zip*archive*file* ) ShowZIP  "$1";;
	*DOS*executable*   ) ShowEXE  "$1";;
	data               ) Showdata "$1";;
	*                  ) cat      "$1";;
    esac
}

if [ "$1" = "" ]
then
    echo "syntax: $(basename '$0') [file]"
else
    case "$1" in
	*.tar )    ShowTAR  "$1";;
	*.tgz )    ShowTGZ  "$1";;
	*.tar.gz ) ShowTGZ  "$1";;
	*.tar.Z )  ShowTGZ  "$1";;
	*.tar.z )  ShowTGZ  "$1";;
	*.Z )      ShowGZIP "$1";;
	*.z )      ShowGZIP "$1";;
	*.gz )     ShowGZIP "$1";;
	*.zip )    ShowZIP  "$1";;
	*.ZIP )    ShowZIP  "$1";;
	*.arj )    ShowARJ  "$1";;
	*.ARJ )    ShowARJ  "$1";;
	* )        ShowMISC "$1";;
    esac
fi