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# readpipe

Perl 5 version 18.2 documentation
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# readpipe

Perl functions A-Z | Perl functions by category | The 'perlfunc' manpage

- readpipe EXPR
- readpipe

  EXPR is executed as a system command. The collected standard output of the command is returned. In scalar context, it comes back as a single (potentially multi-line) string. In list context, returns a list of lines (however you've defined lines with `$/` or `$INPUT_RECORD_SEPARATOR` ). This is the internal function implementing the `qx/EXPR/` operator, but you can use it directly. The `qx/EXPR/` operator is discussed in more detail in I/O Operators in perlop. If EXPR is omitted, uses `$_` .