execute programs via en‐ tries in the mailcap file
See action can be used to view any file (usually image) on default mailcap explorer
Using with run-mailcap
run-mailcap --action=ACTION [--option[=value]] [MIME-TYPE:[ENCOD‐ ING:]]FILE [...] The see, edit, compose and print versions are just aliases that default to the view, edit, compose, and print actions (respectively).
run-mailcap (or any of its aliases) will use the given action to
process each mime-type/file in turn. Each file is specified as its
mime-type, its encoding (e.g. compression), and filename together, sep‐
arated by colons. If the mime-type is omitted, an attempt to determine
the type is made by trying to match the file's extension with those in
the mime.types files. If no mime-type is found, a last attempt will be
done by running the file command, if available. If the encoding is
omitted, it will also be determined from the file's extensions. Cur‐
rently supported encodings are gzip (.gz), bzip2 (.bz2), xz (.xz), and
compress (.Z). A filename of "-" can be used to mean "standard input",
but then a mime-type must be specified.
Both the user's files (~/.mailcap; ~/.mime.types) and the system files
(/etc/mailcap; /etc/mime.types) are searched in turn for information.
extract-mail-attachment msg.txt | see image/tiff:gzip:-
All options are in the form --
A temporary copy of the file is opened if the file name matches the Perl regular expression "[^[:alnum:],.:/@%^+=_-]", in order to protect from the injection of shell commands, and to make sure that the name can always be displayed in the current locale. In addition, the file is opened using its absolute path to prevent the injection of command- line arguments, for instance using file names starting with dashes.
run-mailcap (and its aliases) is in the public domain (the only true "free").
run-mailcap (and its aliases) was written by Brian White