(sharutils.info)unshar split-at

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Enter node , (file) or (file)node

2.2.5 split-at option (-E)
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This is the "split input on SPLIT-MARK lines" option.  This option
takes a string argument `split-mark'.  With this option, `unshar'
isolates each different shell archive from the others which have been
placed in the same file, unpacking each in turn, from the beginning of
the file to the end.  Its proper operation relies on the fact that many
shar files are terminated by a readily identifiable string at the start
of the last line.

   For example, noticing that most `.signatures' have a double hyphen
("-") on a line right before them, one can then sometimes use
`--split-at=--'.  The signature will then be skipped, along with the
headers of the following message.