Perl 5 version 22.4 documentation

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 $_ .