Table of Contents

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(since EVL 2.3)

Write to standard output or <f_out> the content of the <file.qvd>. It parses fields as they are specified in EVD file, unless ‘--match-fields’ is specified.


is to be used in EVS job structure definition file. <f_out> is either output file or flow name.

evl readqvd

is intended for standalone usage, i.e. to be invoked from command line and reading records from standard input.

EVD and EVS are EVL definition files, for details see evl-evd(5) and evl-evs(5).


  <file.qvd> <f_out> (<evd>|-d <inline_evd>)
  [-y|--text-output | -a|--text-output-dos-eol | -b|--text-output-mac-eol]

evl readqvd
  <file.qvd> (<evd>|-d <inline_evd>)
  [-y|--text-output | -a|--text-output-dos-eol | -b|--text-output-mac-eol]

evl readqvd
  ( --help | --usage | --version )


-d, --data-definition=<inline_evd>

either this option or the file <evd> must be presented. Example: ‘-d 'id int, name string, started timestamp'

-m, --match-fields

match fields between EVD and QVD, otherwise they are taken one by one from input QVD file

-n, --null-as-string[=<string>]

read <string> as a NULL value, without <string> specified it reads an empty string as NULL

-y, --text-output

write the output as text, not binary


produce the output as text with CRLF as end of line


produce the output as text with CR as end of line

Standard options:


print this help and exit


print short usage information and exit

-v, --verbose

print to stderr info/debug messages of the component


print version and exit