NAME

hdr - Operations on AIM header.

CONTENTS

Syntax
Description
Options
Copyright

hdr [options] [file]

Read an AIM output file. If no filename is given then input is expectedon the stdin. The input from AIM is expected to consist of an AIM headerfollowed by some data.The header operations are: stripping, querying, or modifying.

Options take the form: <name>=<value>and abbreviated option names are recognised provided they are unambiguouswrt other names in the input header.

1. Stripping. If no options are given, then strip the header   and write the data which follows the header on the stdout.   Eg:        gensai output=stdout ... | hdr | ...
2. Querying. An empty value field (ie. <name>=) is interpreted   as a query, and the corresponding option value found in the   header is printed on the stderr.   Eg., to query the value of option pwidth_aid:
        hdr pwid=  file
   Special option names are:
        "all"       causes all option values to be printed.        "format"    causes the format of the AIM output file to be printed.
3. Modifying. Each option of the form <name>=<value> is   substituted for the corresponding option found in the input   header. A new header is constructed using the input header   and all given substitutions, and the new header is written   on the stdout, followed by the data which follows the input   header.   Eg., to change the value of pwidth_aid to 32ms:
        hdr pwid=32ms  file >  file2

edframe, fbank

Copyright (c) Applied Psychology Unit, Medical Research Council, 1995

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